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Yu D, Zhu K, Li M, Zhang F, Yang Y, Lu C, Zhong S, Qin C, Lan Y, Yu J, Petersen JD, Jiang J, Liang H, Ye L, Liang B. The origin, dissemination, and molecular networks of HIV-1 CRF65_cpx strain in Hainan Island, China. BMC Infect Dis 2024; 24:269. [PMID: 38424479 PMCID: PMC10905908 DOI: 10.1186/s12879-024-09101-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND HIV-1 CRF65_cpx strain carries drug-resistant mutations, which raises concerns about its potential for causing virologic failure. The CRF65_cpx ranks as the fourth most prevalent on Hainan Island, China. However, the origin and molecular epidemiology of CRF65_cpx strains in this area remain unclear. This study aims to estimate the spatial origins and dissemination patterns of HIV-1 CRF65_cpx in this specific region. METHODS Between 2018 and 2021, a total of 58 pol sequences of the CRF65_cpx were collected from HIV-positive patients on Hainan Island. The available CRF65_cpx pol sequences from public databases were compiled. The HIV-TRACE tool was used to construct transmission networks. The evolutionary history of the introduction and dissemination of HIV-1 CRF65_cpx on Hainan Island were analyzed using phylogenetic analysis and the Bayesian coalescent-based approach. RESULTS Among the 58 participants, 89.66% were men who have sex with men (MSM). The median age was 25 years, and 43.10% of the individuals had a college degree or above. The results indicated that 39 (67.24%) sequences were interconnected within a single transmission network. A consistent expansion was evident from 2019 to 2021, with an incremental annual addition of four sequences into the networks. Phylodynamic analyses showed that the CRF65_cpx on Hainan Island originated from Beijing (Bayes factor, BF = 17.4), with transmission among MSM on Hainan Island in 2013.2 (95%HPD: 2012.4, 2019.5), subsequently leading to an outbreak. Haikou was the local center of the CRF65_cpx epidemic. This strain propagated from Haikou to other locations, including Sanya (BF > 1000), Danzhou (BF = 299.3), Chengmai (BF = 27.0) and Tunchang (BF = 16.3). The analyses of the viral migration patterns between age subgroups and risk subgroups revealed that the viral migration directions were from "25-40 years old" to "17-24 years old" (BF = 14.6) and to "over 40 years old" (BF = 17.6), and from MSM to heterosexuals (BF > 1000) on Hainan Island. CONCLUSION Our analyses elucidate the transmission dynamics of CRF65_cpx strain on Hainan Island. Haikou is identified as the potential hotspot for CRF65_cpx transmission, with middle-aged MSM identified as the key population. These findings suggest that targeted interventions in hotspots and key populations may be more effective in controlling the HIV epidemic.
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Affiliation(s)
- Dee Yu
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
- International School of Public Health and One Health, Hainan Medical University, 3 Xueyuan Road, Haikou, 571199, China
| | - Kaokao Zhu
- Prevention and Treatment Department, the Fifth People's Hospital of Hainan Province, 3 Xueyuan Road, Haikou, 570102, China
| | - Mu Li
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Fei Zhang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Yuan Yang
- Guangxi Engineering Center for Organoids and Organ-on-chips of Highly Pathogenic Microbial Infections & Biosafety laboratory, Life Science Institute, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Chunyun Lu
- International School of Public Health and One Health, Hainan Medical University, 3 Xueyuan Road, Haikou, 571199, China
| | - Shanmei Zhong
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Cai Qin
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Yanan Lan
- Guangxi medical university oncology school, 22 Shuangyong Road, Nanning, 530021, China
| | - Jipeng Yu
- The First Clinical Medical College, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Jindong Ding Petersen
- International School of Public Health and One Health, Hainan Medical University, 3 Xueyuan Road, Haikou, 571199, China
- Research Unit for General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
- Research Unit for General Practice, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Junjun Jiang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
- Guangxi Engineering Center for Organoids and Organ-on-chips of Highly Pathogenic Microbial Infections & Biosafety laboratory, Life Science Institute, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China
| | - Hao Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
- Guangxi Engineering Center for Organoids and Organ-on-chips of Highly Pathogenic Microbial Infections & Biosafety laboratory, Life Science Institute, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
| | - Li Ye
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
- Guangxi Engineering Center for Organoids and Organ-on-chips of Highly Pathogenic Microbial Infections & Biosafety laboratory, Life Science Institute, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
| | - Bingyu Liang
- Guangxi Key Laboratory of AIDS Prevention and Treatment & Guangxi Colleges and Universities Key Laboratory of Prevention and Control of Highly Prevalent Diseases, School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
- Guangxi Engineering Center for Organoids and Organ-on-chips of Highly Pathogenic Microbial Infections & Biosafety laboratory, Life Science Institute, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021, China.
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Qu Y, Wang B, Deng J, Feng Y, Pi Z, Ren L, Cai J. Geographical Distribution and Multimethod Species Identification of Forensically Important Necrophagous Flies on Hainan Island. Insects 2023; 14:898. [PMID: 37999097 PMCID: PMC10672153 DOI: 10.3390/insects14110898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 11/25/2023]
Abstract
Forensic entomology offers unique advantages for the minimum postmortem interval (PMImin) estimation of decomposed corpses in forensic investigations. Accurate species identification and up-to-date locality information are essential. Hainan Island has a tropical rainforest climate and a vast territory. In this study, the community structure of necrophagous flies on Hainan Island was investigated in detail according to geographical environment. The results showed that the dominant species included C. megacephala, S. peregrina, C. rufifacies, S. misera, H. ligurriens, S. sericea, S. cinerea, S. dux, C. pinguis, and M. domestica. Furthermore, C. rufifacies and C. villeneuvi were found only in the high-altitude areas of Wuzhi Mountain, while S. cinerea was distributed only in coastal areas; the latter is a representative species of Hainan Island and has not been reported before. Furthermore, a GenBank database of forensically important flies was established, whilst a high-resolution melt (HRM) curve analysis was applied to identify the common species of Hainan Island for the first time. This study enriches the database of forensically important flies in tropical rainforest regions.
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Affiliation(s)
- Yihong Qu
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410017, China; (Y.Q.); (Z.P.)
- Hainan Equity Judicial Expertise Center, Hainan Vocational College of Political Science and Law, Haikou 570100, China
| | - Bo Wang
- Hainan Provincial Academician Workstation, Haikou 570100, China; (B.W.); (J.D.)
| | - Jianqiang Deng
- Hainan Provincial Academician Workstation, Haikou 570100, China; (B.W.); (J.D.)
| | - Yakai Feng
- Department of Forensic Medicine, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi 830011, China;
| | - Zhiyun Pi
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410017, China; (Y.Q.); (Z.P.)
| | - Lipin Ren
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410017, China; (Y.Q.); (Z.P.)
- Shanghai Key Lab of Forensic Medicine, Key Lab of Forensic Science, Ministry of Justice, Academy of Forensic Science, Shanghai 570100, China
| | - Jifeng Cai
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha 410017, China; (Y.Q.); (Z.P.)
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Fu CB, Dan L, Tong JH, Xu WS. [Spatial and Temporal Variations in Ozone Pollution and Sensitivity Characteristics in Hainan Island]. Huan Jing Ke Xue 2023; 44:4799-4808. [PMID: 37699799 DOI: 10.13227/j.hjkx.202209233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Based on ambient air quality data, meteorological observation data, and satellite remote sensing data, the temporal and spatial variations in ozone (O3) pollution, the sensitivity of O3, and its relationship with meteorological factors in Hainan Island were analyzed in this study. The results showed that the maximum daily 8-h moving mean (O3-8h) in western and northern cities in Hainan Island was higher than that in the central, eastern, and southern cities. O3-8h was the highest in 2015, and O3-8h exceeding the standard proportion was the largest in 2019. In addition, O3-8h was positively correlated with average temperature (P<0.1), sunshine duration (P<0.01), total solar radiation (P<0.01), atmospheric pressure, and average wind speed and was negatively correlated with precipitation (P<0.05) and relative humidity. The satellite remote sensing data showed that the tropospheric NO2 column concentration (NO2-OMI) and HCHO column concentration (HCHO-OMI) displayed opposite trends in Hainan Island from 2015 to 2020. Compared with those in 2015, NO2-OMI increased by 7.74% and HCHO-OMI decreased by 10.2% in 2020. Moreover, Hainan Island belongs to the NOx control area, and the FNR value exhibited a fluctuating downward trend in the past 6 years, with a trend coefficient and climatic trend rate of -0.514 and -0.123 a-1, respectively. A strong correlation was observed between meteorological factors and the FNR value of Hainan Island.
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Affiliation(s)
- Chuan-Bo Fu
- Hainan Institute of Meteorological Science, Haikou 570203, China
- Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
- Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China
| | - Li Dan
- Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - Jin-He Tong
- Hainan Institute of Meteorological Science, Haikou 570203, China
- Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China
| | - Wen-Shuai Xu
- Hainan Research Academy of Environmental Sciences, Haikou 571126, China
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Wang J, Yu C, Xu Y, Chen Z, Qiu W, Chen S, Pei H, Zhong Y. Analysis of Drug-Resistance Characteristics and Genetic Diversity of Multidrug-Resistant Tuberculosis Based on Whole-Genome Sequencing on the Hainan Island, China. Infect Drug Resist 2023; 16:5783-5798. [PMID: 37692467 PMCID: PMC10487742 DOI: 10.2147/idr.s423955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/22/2023] [Indexed: 09/12/2023] Open
Abstract
Purpose Given the high burden of Tuberculosis (TB) in China, the prevalence of multidrug-resistant tuberculosis (MDR-TB) is significant. Whole-genome sequencing (WGS) of Mycobacterium tuberculosis (MTB) enables the identification of lineages, drug-resistant mutations, and transmission patterns, offering valuable insights for TB control, clinical diagnosis, and treatment. Methods We collected 202 MDR-MTB strains from 3519 suspected pulmonary TB patients treated at The Second Affiliated Hospital of Hainan Medical University between July 2019 and June 2021. Proportional drug-susceptibility testing was performed using 8 common anti-tuberculosis drugs. Subsequently, the genotypic drug resistance and genetic characteristics were analyzed by the WGS. Results Lineages are identified by TB-profiler revealed 202 MDR-MTB strains, showcasing three predominant lineages, with lineage 2 being the most prevalent. Close genomic relatedness analysis and evidence of MTB transmission led to the formation of 15 clusters comprising 42 isolates, resulting in a clustering rate of 20.8%. Novelty, lineage 2.1 (non-Beijing) accounted for 27.2% of the MDR-MTB strains, which is rare in China and Neighboring countries. Regarding first-line anti-TB drugs, genes associated with rifampicin resistance, primarily the rpoB gene, were detected in 200 strains (99.0%). Genes conferring resistance to isoniazid, ethambutol, and streptomycin were identified in 191 (94.5%), 125 (61.9%), and 100 (49.5%) strains, respectively. Among the second-line drugs, 97 (48.0%) strains exhibited genes encoding resistance to fluoroquinolones. Comparing the results to phenotypic drug susceptibility-based testing, the sensitivity of WGS for detecting resistance to each of the six drugs (rifampicin, isoniazid, ethambutol, ofloxacin, kanamycin, capreomycin) was 90% or higher. With the exception of ethambutol, the specificity of WGS prediction for the remaining drugs exceeded 88%. Conclusion Our study provides crucial insights into genetic mutation types, genetic diversity, and transmission of MDR-MTB on Hainan Island, serving as a significant reference for MDR-MTB surveillance and clinical decision-making.
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Affiliation(s)
- Jieying Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Chunchun Yu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Yuni Xu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Zhuolin Chen
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Wenhua Qiu
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Shaowen Chen
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Hua Pei
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
| | - Yeteng Zhong
- Department of Clinical Laboratory, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, People’s Republic of China
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Wei G, Gao H, Li S, Liu M, Li R, Zhang Y, Shu Q, Wang W, Zhi L, Zeng Y, Na G. The occurrence and abundance of antibiotic resistance genes in rivers of tropical islands: a case of Hainan Island, China. Environ Sci Pollut Res Int 2023; 30:88936-88948. [PMID: 37450180 DOI: 10.1007/s11356-023-28522-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
In this study, the occurrence and distribution of 49 antibiotic resistance genes (ARGs) and two integrase genes (intl1, intl2) in three major rivers of Hainan Island, China, were investigated in July 2021, and to explore the spatial distribution of the target genes in the three rivers with the potential influencing factors such as regional characteristics and environmental factors. The results showed that a total of 46 ARGs and two integrase genes were detected in water and sediment, and the absolute abundance of ARGs ranged from 1.16 × 103 to 2.97 × 107 copies/L and 3.34 × 103-1.55 × 107 copies/g. ARGs of macrolides, aminoglycosides, and sulfonamides were this study's main types of ARGs. The aadA2, tetE, ermF, tetX, aac(6')-Ib, tetW, and qnrS genes are predominant ARGs in the water and sediment of the three rivers. The relative abundance of ARGs shows higher abundance in the midstream and downstream and lower abundance in the upstream and estuarine. After conducting a correlation analysis, it was found that there was a significant positive correlation between the ARGs detected in the water of the three main rivers. However, in sediment, tetC was negatively correlated with tetQ, macB was negatively correlated with ermF and ereA (p < 0.05), while the remaining ARGs showed positive correlations. Specifically, there was no significant positive correlation between tetQ and tetC, macB and ereA, and ermF in the sediments. Among the nine environmental factors studied, pH was found to be the main factor associated with the occurrence of ARGs in the aquatic environment, but it was also significantly associated with only nine ARGs. Among the detected heavy metals, only Cd and Zn showed significant correlations with the two ARGs in the water bodies of the three main rivers. It indicated that the pollution of ARGs in the three major rivers was in the initial stage, the detection abundance was low, the influence of environmental factors was small, and the interaction between ARGs seemed to be the main driving force. This study provides a scientific basis for further understanding the occurrence of ARGs and their influencing factors in a tropical island environment, and lays a foundation for subsequent management.
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Affiliation(s)
- Guangke Wei
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Hui Gao
- National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Shisheng Li
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Min Liu
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Ruijing Li
- National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Yintian Zhang
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Qin Shu
- National Marine Environmental Monitoring Center, Dalian, 116023, China
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Wei Wang
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Liwen Zhi
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Yingxu Zeng
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Guangshui Na
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China.
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Shuli Z, Weitao C, Zhi W, Yuefei L, Jie L, Xinhui L, Jiping Y. Mitochondrial diversity and genetic structure of common carp (Cyprinus carpio) in Pearl River and Nandujiang River. J Fish Biol 2023; 102:1109-1120. [PMID: 36744763 DOI: 10.1111/jfb.15340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 02/01/2023] [Indexed: 05/13/2023]
Abstract
Common carp (Cyprinus carpio) is an important valuable cyprinid in China and has been a popular cultured aquaculture species around the globe. Understanding the genetic diversity of wild native common carp not only provides basic data for the protection and utilisation of common carp resources but also assesses the effect of human activities on the genetic diversity of this species. In this study, genetic diversity and population structure of the common carp from 15 sampling populations in the Pearl River and Nandujiang River were determined using a coalescent mitochondrial locus (MLS), including mitochondrial cytochrome b gene (Cytb) and a control region (D-loop) segment. The haplotype diversity and nucleotide diversity were 0.962 and 0.00628 in the Pearl River and 0.808 and 0.00376 in the Nandujiang River, respectively. Phylogenetic and haplotype network analyses indicated that three sub-species (a) C. c. rubrofuscus, (b) C. c. haematopterus and (c) C. c. carpio all occur in both rivers. AMOVA revealed that the variation within populations (86.2%) was the main source of the total variation. Statistically significant genetic differentiation among different Pearl River populations of C. c. rubrofuscus (Fst = 0.05-0.25) and relatively high genetic differentiation between the Nandujiang River population and the Pearl River populations (Fst > 0.238) are apparent. Bayesian clustering analyses detected that global populations consisted of eight genetic clusters and examined that Nandujiang River population included relatively pure genetic clusters. Neutrality tests suggested that native populations experienced recent population expansion, and Extended Bayesian Skyline Plot indicated that the common carp populations likely experienced a historical expansion during 0.125-0.250 MYA. Artificial fish propagation and release, escape from fish farms and Fang Sheng may explain the invasion of non-native sub-species in many river sections, such as Laibin, Rongjiang, Huizhou, Heyuan and Zhaoqing. To conserve the native common carp populations, release station should be established to culture native common carp fry. Overall, the findings can be contributed to complementing scientific knowledge for conservation and management of the wild native common carp.
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Affiliation(s)
- Zhu Shuli
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Chen Weitao
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Wu Zhi
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Li Yuefei
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Li Jie
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Li Xinhui
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
| | - Yang Jiping
- The Laboratory of Fisheries Resources and Ecology, Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China
- Guangzhou Scientific Observing and Experimental Station of National Fisheries Resources and Environment, Guangzhou, China
- Scientific Observing and Experimental Station of Fishery Resources and Environment in the Middle and Lower Reaches of Pearl River, Ministry of Agriculture and Rural Affairs, Guangzhou, China
- Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province, Guangzhou, China
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Mai W, Ren Y, Tian X, Al-Mahdi AY, Peng R, An J, Lin Q, Hu X, Wang G, Sun C, Lu Z, Du J, Xiao M, Yin F. Comparison of Common Human Respiratory Pathogens Among Hospitalized Children aged ≤6 years in Hainan Island, China, During Spring and Early Summer in 2019-2021. J Med Virol 2023; 95:e28692. [PMID: 36946502 DOI: 10.1002/jmv.28692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 02/24/2023] [Accepted: 03/19/2023] [Indexed: 03/23/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic and related public health intervention measures have been reported to have resulted in the reduction of infections caused by influenza viruses and other common respiratory viruses. However, the influence may be varied in areas that have different ecological, economic, and social conditions. This study investigated the changing epidemiology of 8 common respiratory pathogens, including Influenza A (IFVA), Influenza B (IFVB), Respiratory syncytial virus (HRSV), rhinovirus (RV), Human metapneumovirus (HMPV) Adenovirus (AdV), Human bocavirus (HBOV), and Mycoplasma pneumoniae, among hospitalized children during spring and early summer in 2019-2021 in two hospitals in Hainan Island, China, in the COVID-19 pandemic era. The results revealed a significant reduction in the prevalence of IFVA and IFVB in 2020 and 2021 than in 2019, whereas the prevalence of HRSV increased, and it became the dominant viral pathogen in 2021. RV was one of the leading pathogens in the three year period, where no significant difference was observed. Phylogenetic analysis revealed close relationships among the circulating respiratory viruses. Large scale studies are needed to study the changing epidemiology of seasonal respiratory viruses to inform responses to future respiratory virus pandemics. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Wenhui Mai
- Haikou Maternal and Child Health Hospital, Haikou, Hainan, 570102, China
| | - Yi Ren
- Haikou Maternal and Child Health Hospital, Haikou, Hainan, 570102, China
| | - Xiuying Tian
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
| | | | - Ruoyan Peng
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
| | - Jing An
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
| | - Qiuyu Lin
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
| | - Xiaoyuan Hu
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
| | - Gaoyu Wang
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
| | - Changjia Sun
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
| | - Zhe Lu
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
| | - Jiang Du
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
- NHC Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China
| | - Meifang Xiao
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
- Faculty of medicine, Lincoln University College, 47301, Malaysia
| | - Feifei Yin
- Department of Clinical Laboratory, Center for laboratory Medicine, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, Hainan, 570206, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, 571199, China
- Academician Workstation of Hainan Province, Hainan Medical University, Haikou, Hainan, People's Republic of China, Hainan Medical University, Haikou, 571199, China
- Department of Pathogen Biology, Hainan Medical University, Haikou, 571199, China
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8
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Zhang T, Lin L, Li M, Kong L, Wang J, Shi HT. Investigation on beach debris on the historical nesting grounds of green turtles ( Chelonia mydas) in Hainan Island, South China. Heliyon 2023; 9:e13400. [PMID: 36814616 PMCID: PMC9939588 DOI: 10.1016/j.heliyon.2023.e13400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Hainan Island used to be the most important nesting ground of green turtles in China before they disappeared about 37 years ago. Habitat degradation is one of the main reasons for the disappearance of sea turtles. Therefore, it is necessary to take action to evaluate and recover the historical nesting grounds if we hope for sea turtles to return in the future. In this study, we surveyed the beach debris on 13 historical nesting grounds of green sea turtles on Hainan Island. The beach debris on these nesting grounds mainly consisted of plastic, cigarette butts, foam, glass, and nylon, with plastic (including plastic blocks, cigarette butts, and foam) being the dominant type, accounting for 78.92% in number, followed by glass. The average density of beach debris was 0.314 pieces·m-2. Compared to other nesting grounds, the average quantity and density of beach debris in Hainan was lower, but the proportion of plastic debris was extremely high. After categorizing debris type, we found that most was from human coastal activities (35.54%), with debris at tourist beaches having the biggest proportion of debris from smoking supplies. The distribution characteristics of beach debris were related to the function of the beach, density of tourist, and the intensity of beach debris cleaning. It is recommended to further strengthen the emission reduction and clean-up of beach debris in Hainan Island, so as to restore the nesting habitat of sea turtles as soon as possible.
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Affiliation(s)
- Ting Zhang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China,Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology, Sansha 573100, China
| | - Liu Lin
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China,Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology, Sansha 573100, China
| | - Meimei Li
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China,Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology, Sansha 573100, China
| | - Li Kong
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Jichao Wang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China,Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology, Sansha 573100, China
| | - Hai-Tao Shi
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China,Hainan Sansha Provincial Observation and Research Station of Sea Turtle Ecology, Sansha 573100, China,Corresponding author. Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China.
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9
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Liang X, He Y, Zhu L, Fan S, Zou Y, Ye C. Nitrogen and phosphorus emissions to water in agricultural crop-animal systems and driving forces in Hainan Island, China. Environ Sci Pollut Res Int 2022; 29:85036-85049. [PMID: 35790633 DOI: 10.1007/s11356-022-21853-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
The NUFER (Nutrient Flow in food chains, Environment and Resources) model has been used to reliably quantify nitrogen (N) and phosphorus (P) emissions from agriculture land to water bodies. However, factors impacting agricultural N and P emissions at the island scale have rarely been studied due to the lack of high-resolution spatialization tools, which are critical for exploring mitigation options. Here, a high-resolution NUFER model was constructed based on geology, meteorology, land-use data, statistical data, and field investigation. The spatial characteristics of N and P emissions in Hainan Island, China, were quantified, and the driving forces were analyzed. We also explored effective measures to reduce emissions by 2035 using scenario analysis. Overall, 98 Gg N from agriculture entered water bodies in 2018, of which crop system contributed 70%; 15 Gg P entered water bodies, of which, animal system contributed 78%. Nitrate (NO3-) leaching (65%) and direct discharge of animal manure (69%) accounted for most of the N and P emissions, respectively. Plains contributed 89% of N and 92% of P emissions. Spatial overlay analysis showed that high N and P emissions were mainly concentrated in the western and northeastern plain areas. At the sub-basin scale, the Nandu River basin had the largest agricultural N and P emissions, accounting for more than 20% of all emissions. Scenario analysis showed that N and P emissions were significantly correlated with natural (e.g., elevation, slope, and soil texture) and anthropogenic (e.g., rural income, population density, planting structure, and livestock density) factors. We further analyzed the emissions of N and P can be reduced by 71 Gg and 14 Gg by 2035, respectively, via reducing food chain waste and consumption, importing more food, and improving production efficiency, but especially prohibiting the direct discharge of livestock manure. This high-resolution quantification of agricultural N and P emissions to the water bodies provides an exploration of the most effective options for reducing agricultural non-point source (ANPS) pollution at the island scale.
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Affiliation(s)
- Xu Liang
- College of Ecology and Environment, Hainan University, Haikou, 570228, China
| | - Yanhu He
- Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Lirong Zhu
- School of Tourism, Hainan University, Haikou, 570228, China
| | - Shijie Fan
- College of Tropical Crops, Hainan University, Haikou, 570228, China
| | - Yi Zou
- College of Ecology and Environment, Hainan University, Haikou, 570228, China
| | - Changqing Ye
- College of Ecology and Environment, Hainan University, Haikou, 570228, China.
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Haikou, 570228, China.
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Geng J, Yuan M, Xu S, Bai T, Xiao Y, Li X, Xu D. Urban Expansion Was the Main Driving Force for the Decline in Ecosystem Services in Hainan Island during 1980-2015. Int J Environ Res Public Health 2022; 19:15665. [PMID: 36497740 PMCID: PMC9739161 DOI: 10.3390/ijerph192315665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/15/2022] [Accepted: 11/17/2022] [Indexed: 06/17/2023]
Abstract
Hainan Island is one of China's most ecologically diverse areas. Human activities and climate change have recently influenced Hainan Island's ecosystem services. Therefore, scientific methods are urgently needed to investigate the characteristics of these services' spatial and temporal variations and their driving mechanisms for maintaining Hainan Island's biodiversity and high-quality ecological conservation. Based on multivariate remote sensing and reanalysis data, this study analysed the spatial and temporal variations in water retention, soil conservation, carbon sequestration, and oxygen release services on Hainan Island during 1980-2015 using various ecosystem service models such as INVEST, CASA and RULSE. Then, we analysed different ecosystem service drivers using a random forest model. The results indicated that (1) from 1980 to 2015, the change characteristics of different ecosystem types (arable, forest, and grassland) decreased, and the proportion of decrease was 0.98%, 0.55% and 0.36%, respectively. Built-up and water increased significantly, and the proportion of increase reached 1.46% and 0.51%, respectively. (2) Hainan Island's functions of water retention, soil conservation, carbon sequestration, and oxygen release services decreased from 23.31 billion m3, 2.89 billion t, 9.68 million t and 56.05 million t in 1980 to 23.15 billion m3, 2.79 billion t, 9.42 million t and 55.53 million t in 2015, respectively. The high value area was mainly distributed in Hainan Island's central mountainous area, and the low value area was mainly distributed in the lower-elevation coastal area. (3) In the past 35 years, urban expansion has been the leading factor in the reduction of Hainan Island's ecosystem service capacity. However, its central nature reserve and other forms of ecological protection have improved its ecosystem service capacity, which has alleviated the overall declining trend of its amount of ecosystem service functions. (4) The driving forces for the spatial distribution of Hainan Island's ecosystem services were analysed using a random forest algorithm, which indicated that its spatial distribution was mainly driven by rainfall, soil moisture, actual evapotranspiration, maximum temperature, and minimum temperature. This study is expected to help planners develop effective environmental policies to accommodate the potential ecological risks associated with urban expansion during the construction of Hainan Island's future free trade port while filling the gaps in existing studies.
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Affiliation(s)
- Jia Geng
- International Hospitality Management School, University of Sanya, Sanya 572000, China
| | - Mingsheng Yuan
- School of Business Administration, Northeastern University, Shenyang 110819, China
| | - Shen Xu
- School of Psychological and Cognitive Sciences, Peking University, Beijing 100871, China
| | - Tingting Bai
- School of Business Administration, Northeastern University, Shenyang 110819, China
| | - Yang Xiao
- Academician Workstation of Zhai Mingguo, University of Sanya, Sanya 572022, China
| | - Xiaopeng Li
- The Third Engineering Co., Ltd. of China Railway 22nd Bureau Group, Xiamen 361000, China
| | - Dong Xu
- State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100091, China
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11
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Song HZ, Naugolnykh SV, Wu XK, Liu XY, Jin JH. Fertile Woodwardia from the middle Eocene of South China and its implications for palaeogeography and palaeoclimate. Plant Divers 2022; 44:565-576. [PMID: 36540713 PMCID: PMC9751083 DOI: 10.1016/j.pld.2021.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 06/17/2023]
Abstract
The genus Woodwardia, which together with the genera Anchistea and Lorinseria comprise the subfamily Woodwardioideae of Blechnaceae, has a disjunct distribution across Central and North America, Europe and the temperate to tropical areas of Asia. Fossil records of Woodwardia occur throughout the Paleogene and Neogene of North America, Europe and Asia. However, well-preserved fertile pinna fossils of this genus have not yet been reported in South China. In this paper, a new species, W. changchangensis Naugolnykh et Song, sp. nov. is described from the middle Eocene of the Changchang Basin, Hainan Island, South China. Macromorphological and micromorphological features of the fertile pinna show a straight pinna rachis, alternate, subtriangular pinnules, acute pinnule apices, almost entire or slightly undulate pinnule margins, long-ovoid sori, stalked sporangia and spores with wing-like folds on the surface, which are characterised in detail. Overall, the present fossil is most similar to the extant species Woodwardia japonica, which mostly grows in warm and moist environments. The discovery of this new species from the Changchang Basin of Hainan Island indicates that this genus has been distributed in the low-latitude tropical regions of South China from as early as the middle Eocene. Based on this find, and previous studies of other ferns from the same site, we infer that the climate of the Palaeo-Hainan landscape during deposition of the Changchang Formation was warm and humid, similar to conditions prevailing today across this region.
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Affiliation(s)
- Han-Zhang Song
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Serge V. Naugolnykh
- Geological Institute of Russian Academy of Sciences, Moscow, 119017, Russia
- Contract Affiliation: Kazan Federal University, Republic of Tatarstan, Russia
| | - Xin-Kai Wu
- School of Ecology, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiao-Yan Liu
- School of Geography, South China Normal University, Guangzhou 510631, China
| | - Jian-Hua Jin
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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12
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Lei JR, Chen YQ, Chen ZZ, Chen XH, Wu TT, Li YL. [Spatiotemporal evolution of habitat quality in three basins of Hainan Island based on InVEST model]. Ying Yong Sheng Tai Xue Bao 2022; 33:2511-2520. [PMID: 36131668 DOI: 10.13287/j.1001-9332.202209.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Based on land use data of five periods during 1980 to 2020, using the InVEST model and the methods of land use transfer, habitat quality change rate and spatial statistical analysis, we explored the changes of habitat quality and its spatial distribution characteristics in the three major basins of Hainan Island (Nandu River, Changhua River and Wanquan River). The results showed that woodlands were the main land use type in the three basins of Hainan Island, accounting for more than 70% of the total area. From 1980 to 2020, the area of construction land increased the most, reaching up to 169.09 km2, mainly from cultivated land and woodland. The spatial distribution pattern of habitat quality in the study area was higher in the upstream and head water areas and lower in the mid and downstream regions. Overall, habitat quality index increased slightly for a short period and then decreased significantly during the study period. Among the three basins, habitat quality of Wanquan River Basin was the highest, followed by Changhua River Basin, and Nandu River Basin was the lowest. The habitat quality of Nandu River Basin fluctuated greatly and was strongly affected by human disturbance. From 1980 to 2020, the change rate of habitat quality in the three basins generally decreased by 0.5%, which was significantly degraded from 2010 to 2020. From 1980 to 2020, the spatial distribution of habitat quality in the study area displayed strong autocorrelation and significant aggregation. The hot spot area of habitat quality was mainly concentrated near the head water and upstream areas of the three basins, while the cold spot area was mainly distributed in the estuary area of the three basins, along with the mid and downstream areas of the Nandu River. These results would provide scientific reference for biodiversity conservation and ecological restoration efforts in the three basins of Hainan Island.
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Sun Y, Yang J, Gong J, Duan Z. Contamination and source of metals in surface sediments from the Nandu River of Hainan Island, China. Mar Pollut Bull 2022; 182:114037. [PMID: 35969904 DOI: 10.1016/j.marpolbul.2022.114037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Revised: 08/02/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
Concentrations of eight metals, organic carbon (Corg), and eight oxides were measured in 33 river sediment samples from the Nandu River. Sediment quality guidelines (SQGs) showed no severe pollution at all stations. However, according to the geo-accumulation index (Igeo), enrichment factor (EF), and potential ecological risk index (EI and RI), As and Cd were the primary pollutants in the survey area and caused low to moderate potential ecological risk. The positive correlations between Al2O3, TFe2O3, Mn, Corg, and metals indicated that clay, FeMn oxides, and organic carbon content were the main factors for metal accumulation in the study area. From the results of correlation (CA) and principal component analysis (PCA), we inferred that Cr, Ni, Cu, and Zn were mainly from natural sources, while As, Cd, Hg, and Pb were from anthropogenic activities in the Nandu River basin. This was the first study of metal pollution in the surface sediments of the Nandu River, which will serve as a reference for future research.
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Affiliation(s)
- Yanling Sun
- School of Earth Sciences, China University of Geoscience, Wuhan 430074, PR China
| | - Jianzhou Yang
- Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, PR China; Key Laboratory of Geochemical Exploration Technology, Ministry of Natural Resources, Langfang 065000, PR China.
| | - Jingjing Gong
- Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, PR China; Key Laboratory of Geochemical Exploration Technology, Ministry of Natural Resources, Langfang 065000, PR China
| | - Zhuang Duan
- Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, PR China; Key Laboratory of Geochemical Exploration Technology, Ministry of Natural Resources, Langfang 065000, PR China
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14
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Wu X, He Z, Lin X, Deng B, Zhai Q, Li J. Three new species of the genus Alluaudomyia Kieffer, 1913 (Diptera, Ceratopogonidae) from the National Park of Hainan Tropical Rainforest, China. Zookeys 2022; 1112:199-218. [PMID: 36760620 PMCID: PMC9848774 DOI: 10.3897/zookeys.1112.83021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 06/24/2022] [Indexed: 11/12/2022] Open
Abstract
Three new species of the predaceous midges of genus Alluaudomyia Kieffer, 1913: A.flavinotum Wu & Li, sp. nov. of the maculipennis group, and A.reflexuralis Wu & Li, sp. nov. and A.limu Wu & Li, sp. nov. of the parva group, are described from the National Park of Hainan Tropical Rainforest, Hainan Island, China. Illustrations and COI barcodes (a fragment of the mitochondrial cytochrome c oxidase subunit 1) of the three new species are also provided. Associations of male and female specimens of two species (A.reflexuralis Wu & Li, sp. nov. and A.limu Wu & Li, sp. nov.) are supported by DNA barcodes. The parva group is reported from China for the first time.
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Affiliation(s)
- Xiaoxiang Wu
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina
| | - Zehua He
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina
| | - Xiaodan Lin
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina
| | - Bin Deng
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina
| | - Qi Zhai
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina
| | - Jiahui Li
- Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, College of Plant Protection, Hainan University, Haikou, 570228, ChinaHainan UniversityHaikouChina,Hainan Yazhou Bay Seed Lab, Sanya, 572024, ChinaHainan Yazhou Bay Seed LabSanyaChina
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15
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Wei YL, Long ZJ, Ren MX. Microbial community and functional prediction during the processing of salt production in a 1000-year-old marine solar saltern of South China. Sci Total Environ 2022; 819:152014. [PMID: 34852250 DOI: 10.1016/j.scitotenv.2021.152014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/15/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
In Hainan Island, South China, a 1000-year-old marine saltern has been identified as an intangible cultural heritage due to its historical complicated salt-making techniques, whereas the knowledge about this saltern is extremely limited. Herein, DNA sequencing and biochemical technologies were applied to determine bacterial and fungal communities of this saltern and their possible functions during four stages of salt-making, i.e. seawater storage, mud solarization, brine concentrating, and solar crystallization. The results showed that both of bacterial and fungal communities were suffered from significant changes during processing of salt-making in Danzhou Ancient Saltern, whereas the richness and diversity of bacterial community dominated by Proteobacteria, Bacteroidota and Cyanobacteria was considerably greater than that of fungal community dominated by Ascomycota, Basidiomycota and Mortierellomycota. Additionally, the succession of bacterial community was closely associated with both of salt physicochemical properties (Na+, Cl-, total phosphorus, total nitrogen, Ca2+ and Mg2+) and bacteria themselves, whereas fungal community was more closely associated with physicochemical properties than fungi themselves. Importantly, Cyanobium_PCC-6307, Synechococcus_CC9902, Marinobacter, Prevotella and Halomonas as dominant bacterial genera respectively related to the metabolisms of amino acid, carbohydrate, terpenoids/polyketides, lipid and nucleotide were correlated with salt flavors. Saprophytic and saprotroph-symbiotroph fungi dominated by Aspergillus, Mortierella, Amanita, Neocucurbitaria and Tausonia also played core roles in the formation of salt flavors including umami and sweet smells. These findings revealed the highly specified microbiome community in this 1000-year-old saltern that mainly selected by brine solarization on basalt platforms, which is helpful to explore the underlying mechanisms of traditional salt-making techniques and to explore the useful microbes for nowadays food, medicine and chemical industries.
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Affiliation(s)
- Ya-Li Wei
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China
| | - Zi-Jie Long
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China
| | - Ming-Xun Ren
- Ministry of Education Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Hainan University, Haikou 570228, PR China; Center for Terrestrial Biodiversity of the South China Sea, Hainan University, Haikou 570228, PR China.
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16
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Han N, Yu M, Jia P. Multi-Scenario Landscape Ecological Risk Simulation for Sustainable Development Goals: A Case Study on the Central Mountainous Area of Hainan Island. Int J Environ Res Public Health 2022; 19:ijerph19074030. [PMID: 35409712 PMCID: PMC8998377 DOI: 10.3390/ijerph19074030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 12/04/2022]
Abstract
The sustainable development goals (SDGs) of the United Nations are focused on regional development and ecological security. Based on these SDGs, quantitative regional landscape ecological risk assessment is significant to realize regional sustainable development. This study took the central mountainous area (CMA) of Hainan Island as the research area, and combined SDGs and a patch-generating land-use simulation (PLUS) model to analyze multi-scenario land-use change and landscape ecological risk simulation. The study results show that the low ecological risk areas are located in the central hinterland of the CMA, and the high ecological risk areas are located on the northern and southern edges, with strong disturbances from human activities. The construction land in the CMA expanded drastically from 2010 to 2018, mainly invading forestland and grassland, leading to landscape fragmentation, which was the main cause of the increased ecological risk in the CMA landscape. The future multi-scenario simulations for SDGs show that under the scenario of natural development and economic development, the construction land and water area will significantly expand and the forest land will be dramatically reduced. Under the ecological protection scenario, the expansion of construction land will be restrained, and the area of forest land will increase. The results showed that the landscape ecological risks in the three simulated scenarios would be higher than in 2018, but the increase in the landscape ecological risks under the ecological protection scenario would be relatively slight. Forest land plays an essential role in maintaining the ecological security of the CMA. The expanding construction land in the CMA has led to landscape fragmentation and increased ecological risk. Therefore, it is necessary to protect the forest land in the CMA. In addition, construction and development should be limited in high-risk areas. Although the adoption of the ecological conservation scenario favors regional sustainability, it is still necessary to improve ecological protection policies such as ecological compensation to ensure the realization of other SDGs.
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Gao L, Wang Z, Peng X, Su Y, Fu P, Ge C, Zhao J, Yang L, Yu H, Peng L. Occurrence and spatial distribution of microplastics, and their correlation with petroleum in coastal waters of Hainan Island, China. Environ Pollut 2022; 294:118636. [PMID: 34890740 DOI: 10.1016/j.envpol.2021.118636] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/14/2021] [Accepted: 12/03/2021] [Indexed: 06/13/2023]
Abstract
In this study, the distribution, abundance, morphology, and composition of microplastics (MPs) in surface seawater and sediment of Hainan Island were systematically investigated. Seawater and sediment samples were collected from six functional zones, including harbor, industrial district, sparsely populated area, tourist area, residential area, and aquaculture area. The abundance of MPs in seawater was 0.46-19.32 items/L, with an average of 2.59 ± 0.43 items/L, which were similar to those detected in the South China Sea (e.g., Nansha (1.25-3.20 items/L) and Xisha (2.57 ± 1.78 items/L)). The highest level was detected in Qinglan Bay Estuary, and the lowest was in Sanya West Island. The abundance of MPs in sediment was 41.18-750.63 items/kg, with an average of 372.47 ± 62.10 items/kg; the highest concentration was detected at Tanmen Port, and the lowest was in Lingao sea area. It was detected that the MPs with smaller size exhibited a higher concentration in seawater. MPs were commonly black and white, and predominantly linear and fragmented in shape. Polyethylene terephthalate (PET) was the dominant polymer, which might be derived from laundry wastewater. The petroleum concentration was 0.02-0.21 mg/L in the investigated area, with harbors being the most severely polluted areas. Furthermore, this study also found that MPs pollution was positively correlated with petroleum in seawater, indicating similarities between MPs and petroleum-based sources of pollution. This study identifies the contamination and characteristics of MPs and their correlation with petroleum in Hainan Island, the biggest island in the South China Sea, providing important data for further research on protecting marine ecosystems.
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Affiliation(s)
- Liu Gao
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China
| | - Zezheng Wang
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China
| | - Xianzhi Peng
- Key Laboratory of Environmental Resources Utilization and Protection of Guangdong Province, China
| | - Yuanyuan Su
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China
| | - Pengcheng Fu
- State Key Laboratory of Marine Resources Utilization in South China Sea, China
| | - Chengjun Ge
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China
| | - Jinjin Zhao
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China
| | - Liang Yang
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China
| | - Huamei Yu
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China
| | - Licheng Peng
- College of Ecology and Environment, Hainan University, Haikou, Hainan Province, 570228, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, China.
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Zhang T, Lin L, Li D, Wu S, Kong L, Wang J, Shi H. The microplastic pollution in beaches that served as historical nesting grounds for green turtles on Hainan Island, China. Mar Pollut Bull 2021; 173:113069. [PMID: 34695689 DOI: 10.1016/j.marpolbul.2021.113069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 10/08/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
This study evaluated microplastic pollution in beaches that have served as historical nesting grounds for green turtles in Hainan Island, China and explored the sources of microplastic pollutants to conduct habitat restoration for sea turtles. The average abundance of the microplastics in the beach surface sediments was 2567.38 ± 2937.37 pieces·m-2 or 641.85 ± 734.34 thousand pieces·m-3, foam and plastic block were the main microplastics identified. Microplastic size was predominantly within the 0.05-1 mm category (small microplastic particles), and most microplastic particles were white. Polystyrene and polyethylene were the dominant plastic compositions. The type and compositions of microplastics indicate that most microplastics in this study were broken from large plastic blocks and foam. To reduce the threat of microplastic pollution to marine life, including sea turtles, we suggested removing plastic litter, especially small plastic on beaches, and replacing and recovering the foam used in aquaculture before it ages and fragments.
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Affiliation(s)
- Ting Zhang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Liu Lin
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Deqin Li
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Shannan Wu
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Li Kong
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Jichao Wang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Haitao Shi
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China.
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Song T, Zhang P, Tang K, Deng J, Li J. A preliminary study on the distribution of necrophagous flies on Hainan Island, China. J Forensic Sci 2021; 67:741-748. [PMID: 34806772 DOI: 10.1111/1556-4029.14937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/29/2021] [Accepted: 10/25/2021] [Indexed: 11/30/2022]
Abstract
To date, there have been no studies on necrophagous fly populations on Hainan Island in China. Thus, we investigated the species composition of necrophagous flies as well as their geographic distribution on Hainan Island for the first time. Ten sites in different climatic regions across the island were sampled for 7 days per location from November 1, 2018 to February 28, 2019 and from July 1, 2019 to October 31, 2019. Bottle traps made of 1.5 L soft plastic bottles were used to trap necrophagous flies. The collected individuals were identified to species. The specimens represented 5 families and 28 species. Chrysomya megacephala (Fabricius, 1794) was the most dominant species, followed by Chrysomya rufifacies (Macquart, 1843), Hemipyrellia ligurriens (Wiedemann, 1830), Boettcherisca peregrine (Robineau-Desvoidy, 1830), Parasarcophaga dux (Thomson, 1868), Parasarcophaga misera (Walker, 1849), Synthesiomyia nudiseta (Wulp, 1883), and Ophyra chalcogaster (Wiedemann, 1924). The largest collection of flies was obtained in the semiarid region. Species richness was highest in the subhumid region and was higher in summer than in winter, but there were exceptions, such as L. hainanensis (Fan,1965), Boettcherisca formosensis (Lopes, 1961), and Muscina stabulans (Fallen, 1817). Fannia pusio (Wiedemann, 1830), and Boettcherisca formosensis (Lopes, 1961) were newly recorded species on Hainan Island. Of the necrophagous flies collected during the study, we propose several predominant species based on the criteria of distribution, occurrence frequency, and resource preference. Our results not only investigate necrophagous flies on Hainan Island but also accumulate data for criminal investigations in the region.
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Affiliation(s)
- Tao Song
- Shanghai Key Lab of Forensic Medicine, Key Lab of Forensic Science, Ministry of Justice, China (Academy of Forensic Science), Shanghai, China.,Department of Forensic Medicine, Hainan Medical University, Haikou, China.,Academician Workstation of Hainan Province (Tropical Forensic Medicine), Haikou, China
| | - Peng Zhang
- Shanghai Key Lab of Forensic Medicine, Key Lab of Forensic Science, Ministry of Justice, China (Academy of Forensic Science), Shanghai, China.,Department of Forensic Medicine, Hainan Medical University, Haikou, China.,Academician Workstation of Hainan Province (Tropical Forensic Medicine), Haikou, China
| | - Ke Tang
- Department of Forensic Medicine, Hainan Medical University, Haikou, China
| | - Jianqiang Deng
- Shanghai Key Lab of Forensic Medicine, Key Lab of Forensic Science, Ministry of Justice, China (Academy of Forensic Science), Shanghai, China.,Department of Forensic Medicine, Hainan Medical University, Haikou, China.,Academician Workstation of Hainan Province (Tropical Forensic Medicine), Haikou, China
| | - Jianbo Li
- Department of Forensic Medicine, Faculty of Basic Medical Sciences, Chongqing Medical University, Chongqing, China
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Wang J, Li C, Chen J, Wang J, Jin J, Jiang S, Yan L, Lin HD, Zhao J. Phylogeographic structure of the dwarf snakehead ( Channa gachua) around Gulf of Tonkin: Historical biogeography and pronounced effects of sea-level changes. Ecol Evol 2021; 11:12583-12595. [PMID: 34594522 PMCID: PMC8462176 DOI: 10.1002/ece3.8003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 07/15/2021] [Accepted: 07/21/2021] [Indexed: 11/07/2022] Open
Abstract
Geological events, landscape features, and climate fluctuations have shaped the distribution of genetic diversity and evolutionary history in freshwater fish, but little attention has been paid to that around the Gulf of Tonkin; therefore, we investigated the phylogeographic structure of the dwarf snakehead (Channa gachua) on Hainan Island and mainland China, as well as two populations in Vietnam. We attempted to elucidate the origins of freshwater fish in South Hainan by incorporating genetic data from DNA markers on both the mitochondrial cytochrome b gene (cyt b) and the nuclear recombination-activating gene 1 (RAG-1). Mitochondrial phylogenetic analysis identified two major lineages (lineages A and B), which may represent separate species. Divergence data suggested that C. gachua populations diverged between 0.516 and 2.376 myr. The divergence of the two cryptic species is congruent with sea-level rise, which subsequently isolated Hainan from the mainland. During the Pleistocene glaciations, the entire region of the Gulf of Tonkin and the Qiongzhou Strait became part of the coastal plain of the Asian continent, which might have resulted in the current distribution patterns and dispersal routes of C. gachua populations. The formation of three sublineages in lineage A indicated that the Gulf of Tonkin was a geographical barrier between Hainan Island and mainland China but not between Vietnam and Hainan Island. The results of this study may help to elucidate the origins of freshwater fish in South Hainan and the phylogeographic structure of C. gachua.
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Affiliation(s)
- Junjie Wang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Chao Li
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Jiaqi Chen
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Jujing Wang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Jinjin Jin
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Shuying Jiang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Luobin Yan
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
| | - Hung-Du Lin
- The Affiliated School of National Tainan First Senior High School Tainan Taiwan
| | - Jun Zhao
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring School of Life Science South China Normal University Guangzhou China
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Wang J, Liu M, Zhang YR, Xing HY, Li H, Lin F, Wu T. [A real-world study of sofosbuvir-based drug treatment for hepatitis C virus genotype 6 infection in Hainan region of China]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:679-684. [PMID: 34371539 DOI: 10.3760/cma.j.cn501113-20200525-00271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the real-world effectiveness and safety of sofosbuvir-based regimen for patients with chronic hepatitis C virus (HCV) genotype 6 infection in Hainan Island. Methods: Fifty-three cases with chronic hepatitis C virus (HCV) genotype 6 infection who were initially treated with a sofosbuvir (SOF)-based regimen [sofosbuvir/velpatasvir (SOF/VEL) for 12 weeks or sofosbuvir combined with ribavirin (SOF+RBV) for 24 weeks], followed by 24 weeks of follow-up after discontinuation of the drug from January 2018 to March 2020 were selected. The primary outcome measures were incidence of sustained virological response at 12 weeks (SVR12) after the drug withdrawal. The secondary outcome measures were adverse drug events with sustained virological response at the end of treatment and 24 weeks after the end of treatment. The occurrence of adverse events was observed during the treatment. An intragroup comparison was performed by t-test. Intention-to-treat and modified intention-to-treat analysis was used for sustained virological respons. Results: The subtype distribution of chronic hepatitis C virus (HCV) genotype 6 in 53 cases of chronic hepatitis C infection were as follows: 22 cases of type 6a, 5 cases of type 6w, 5 cases of type 6xa, 3 cases of type 6v, 2 cases of type 6e, 2 cases of type 6r, 1 case of type 6xh, and 13 cases of special virus strains with undetermined genotype. The overall sustained virological response rate at 12 weeks after the drug withdrawal was 100%. Furthermore, HCV RNA was undetectable during the treatment period (4 weeks), at the end of treatment and after the treatment (24 weeks). There were seven cases of adverse events, mainly including fatigue, anorexia, and mild anemia; however, no serious adverse events were reported. Conclusion: Sofosbuvir-based regimen combined with ribavirin or velpatasvir cannot only achieve high response rate to HCV subtype 6a, but also obtain a good sustained virological response to the rare prevalent sub-genotypes and special virus strains of HCV genotype 6, with mild adverse reactions and acceptable safety profile.
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Affiliation(s)
- J Wang
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - M Liu
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - Y R Zhang
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - H Y Xing
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - H Li
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - F Lin
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
| | - T Wu
- Department of Infectious Diseases, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China; NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou 570311, China
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Wu F, Liao B, Chen Y, Jiang Z, Guo Y, Li M. Niches of nine mangrove species in a Sonneratia apetala-colonized area of Dongzhai Harbor, Hainan Island, China. Ecol Evol 2020; 10:11838-11846. [PMID: 33145004 PMCID: PMC7593169 DOI: 10.1002/ece3.6823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 06/03/2020] [Accepted: 08/27/2020] [Indexed: 11/15/2022] Open
Abstract
The distribution of mangroves is influenced by the environment. We aimed to understand the ecological adaptability of various mangrove species within the range of the exotic species, Sonneratia apetala Buch.‐Ham., in Dongzhai Harbor, Hainan Island, China. We used three niche breadth indexes (Simpson, Levins, and Shannon–Weiner) and two niche overlap indexes (Pianka and Levins) to quantitatively determine the niche characteristics of nine mangrove species. The results showed that the order of the niche breadth values of mangrove species was as follows: Aegiceras corniculatum (Linn.) Blanco > Kandelia obovata Sheue et al. > Bruguiera gymnorrhiza (L.) Poir. > Avicennia marina (Forsk.) Vierh. Hailanci > S. apetala > S. caseolaris (L.) Engl. > Rhizophora stylosa Griff > Ceriops tagal (Perr.) C. B. Rob. > B. sexangula (Lour.) Poir. Pearson correlation analysis revealed that the niche breadth of each population was significantly correlated with the importance value of the population in the whole sample (R1 = R2 = 0.771, R3 = 0.644, p < .05). The nine mangrove species were divided into three groups by Bray–Curtis cluster analysis; the groups were similar to the distribution of mangrove species in the natural state as determined by tide level. Niche similarity analysis showed that the niche similarity of most mangroves ranged between 0.5 and 0.8 and that the species pairs A. corniculatum–B. gymnorrhiza, A. corniculatum–Avicennia marina, and K. obovata–S. caseolaris were characterized by large niche similarity ratios. Although it had a moderate niche breadth, S. apetala had a relatively broad niche overlap with mangroves in the mid‐ and low‐tide zones (S. caseolaris, A. corniculatum, K. obovata, and Avicennia marina), a moderate overlap with B. gymnorrhiza and R. stylosa, only a slight overlap with C. tagal, and no overlap with B. sexangular. There was no obvious linear relationship between niche width and niche overlap of mangroves. Due to its inefficiency in utilizing certain resources and relatively high degree of resource selection, it seems likely that S. apetala will not pose a threat to the survival of native plants, let alone completely replace native species.
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Affiliation(s)
- Feng Wu
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China.,Zhaoqing Xinghu National Wetland Park Management Center Zhaoqing China
| | - Baowen Liao
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China
| | - Yujun Chen
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China
| | - Zhongmao Jiang
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China
| | - Yunpeng Guo
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China
| | - Mei Li
- Key Laboratory of State Forestry Administration on Tropical Forestry Research Research Institute of Tropical Forestry Chinese Academy of Forestry Guangzhou China
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Li Y, Zhou G, Zhong S, Wang X, Zhong D, Hemming-Schroeder E, Yi G, Fu F, Fu F, Cui L, Cui G, Yan G. Spatial heterogeneity and temporal dynamics of mosquito population density and community structure in Hainan Island, China. Parasit Vectors 2020; 13:444. [PMID: 32887654 PMCID: PMC7650291 DOI: 10.1186/s13071-020-04326-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/30/2020] [Indexed: 02/08/2023] Open
Abstract
Background Mosquitoes are vectors of many tropical diseases. Understanding the ecology of local mosquito vectors, such as species composition, distributions, population dynamics, and species diversity is important for designing the optimal strategy to control the mosquito-borne diseases. Methods Entomological surveillance of adult mosquitoes was conducted in five sites representing different ecological settings across Hainan Island from January to December of 2018 using BG Sentinel (BGS) traps and Centers for Disease Prevention and Control (CDC) light traps. In each site, we selected three areas representing urban, suburban and rural settings. Eighteen trap-days were sampled in each setting at each site, and CDC light traps and BGS traps were setup simultaneously. Mosquito species composition, distribution, population dynamics, and species diversity were analyzed. Mosquito densities were compared between different study sites and between different settings. Results Nine species of mosquitoes belonging to four genera were identified. Culex quinquefasciatus (80.8%), Armigeres subalbatus (13.0%) and Anopheles sinensis (3.1%) were the top three species collected by CDC light traps; Cx. quinquefasciatus (91.9%), Ae. albopictus (5.1%), and Ar. subalbatus (2.8%) were the top three species collected by BGS traps. Predominant species varied among study sites. The population dynamics of Ae. albopictus, An. sinensis and Cx. quinquefasciatus showed clear seasonal variation regardless of study sites with a varied peak season for different species. Mosquito abundance of all species showed significant differences among different study sites and among urban, suburban and rural areas. Danzhou had the highest mosquito biodiversity, with an α, β, and Gini-Simpson biodiversity index of 8, 1.13 and 0.42, respectively. BGS traps captured Aedes mosquito at a higher efficiency than CDC light traps, whereas CDC light traps captured significantly more Anopheles and Armigeres mosquitoes than BGS traps. Conclusions Mosquitoes were abundant on Hainan Island with clear seasonality and spatial heterogeneity. Population density, species composition, distribution, and species diversity were strongly affected by the natural environment. Different tools are required for the surveillance of different mosquito species.![]()
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Affiliation(s)
- Yiji Li
- Department of Pathogen Biology, Hainan Medical University, Haikou, Hainan, China.,Program in Public Health, College of Health Sciences, University of California, Irvine, CA, 92697, USA
| | - Guofa Zhou
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, 92697, USA
| | - Saifeng Zhong
- Department of Pathogen Biology, Hainan Medical University, Haikou, Hainan, China
| | - Xiaoming Wang
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, 92697, USA
| | - Daibin Zhong
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, 92697, USA
| | | | - Guohui Yi
- Public Research Laboratory, Hainan Medical University, Haikou, Hainan, China
| | - Fengyang Fu
- Department of Medical Technology, Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Faxing Fu
- Department of Pathogen Biology, Hainan Medical University, Haikou, Hainan, China
| | - Liwang Cui
- Department of Internal Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Guzhen Cui
- Key Laboratory of Medical Microbiology and Parasitology of Education Department of Guizhou, School of Basic Medical Science, Guizhou Medical University, Guiyang, China. .,Key Laboratory of Endemic and Ethnic Diseases Ministry of Education, Guiyang, China.
| | - Guiyun Yan
- Program in Public Health, College of Health Sciences, University of California, Irvine, CA, 92697, USA.
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Ling SJ, Guan SP, Wen F, Shui YM, Ren MX. Oreocharis jasminina (Gesneriaceae), a new species from mountain tops of Hainan Island, South China. PhytoKeys 2020; 157:121-135. [PMID: 32934451 PMCID: PMC7467974 DOI: 10.3897/phytokeys.157.50246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 06/02/2020] [Indexed: 06/02/2023]
Abstract
A new species of Gesneriaceae, Oreocharis jasminina S.J.Ling, F.Wen & M.X. Ren from Hainan Island, south China, is highlighted and described. The new species is distinguished by its actinomorphic corolla, narrow floral tube and ovate anthers hidden in the floral tube. The new species also showed clear geographic and altitudinal isolation from the three currently-recognised Oreocharis species on the Island. Molecular phylogenetic analysis, based on nuclear ITS1/2 and plastid trnL-trnF sequences, supported the delimitation of the new species, which forms a single lineage with all the other Oreocharis species from Hainan Island. The roles of geographic and floral isolation in the evolution of the new species and its affinities are discussed.
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Affiliation(s)
- Shao-Jun Ling
- Center for Eco-Environmental Restoration Engineering of Hainan Province, College of Ecology and Environment, Hainan University, Haikou 570228, China
- College of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China
| | - Shu-Ping Guan
- College of Horticulture, Hainan University, Haikou 570228, China
| | - Fang Wen
- Gesneriad Conservation Centre of China, Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi 541006, China
| | - Yu-Min Shui
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, 650201 Yunnan, Kunming, China
| | - Ming-Xun Ren
- Center for Eco-Environmental Restoration Engineering of Hainan Province, College of Ecology and Environment, Hainan University, Haikou 570228, China
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Zhong C, Li D, Zhang Y. Description of a new natural Sonneratia hybrid from Hainan Island, China. PhytoKeys 2020; 154:1-9. [PMID: 32843846 PMCID: PMC7417295 DOI: 10.3897/phytokeys.154.53223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
Here, we describe, illustrate and compare a new natural hybrid, Sonneratia × zhongcairongii Y. S. Wang & S. H. Shi (Sonneratiaceae), with its possible parent species. Based on its morphological characteristics and habitat conditions, this taxon is considered to represent a sterile hybrid between S. alba and S. apetala. In China, the new hybrid is only reported in the mangrove forest in Dongzhai Harbour, Hainan Island. It has intermediate characteristics with its parents by elliptical leaf blades, peltate stigma, terminal or axillary inflorescence with 1-3 flower dichasia, cup - shaped calyx (4-6 calyx lobes) and no petals. We also provide a key for the identification of Sonneratia species.
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Affiliation(s)
| | - Donglin Li
- College of Ying-Tong Agricultural Science and Engineering, Shaoguan University, Shaoguan, Guangdong 512005, ChinaLingnan Normal UniversityZhanjiangChina
| | - Ying Zhang
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, Guangdong 524048, ChinaHainan Academy of Forestry, Hainan Mangrove Research InstituteHaikouChina
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Zhang WJ, Wang JJ, Li C, Chen JQ, Li W, Jiang SY, Hsu KC, Zhao M, Lin HD, Zhao J. Spatial genetic structure of Opsariichthys hainanensis in South China. Mitochondrial DNA A DNA Mapp Seq Anal 2020; 31:98-107. [PMID: 32186219 DOI: 10.1080/24701394.2020.1741564] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
South China presents an excellent opportunity to build a phylogeographic paradigm for complex geological history, including mountain lifting, climate change, and river capture/reversal events. The phylogeography of cyprinids, particularly Opsariichthys hainanensis, an endemic species restricted to South China, was examined to explore the relationship between the populations in Red River, Hainan Island and its adjacent mainland China. A total of 37 haplotypes were genotyped for the mitochondrial cytochrome b (Cyt b) gene in 115 specimens from 11 river systems. Relatively high levels of haplotype diversity (h = 0.946) and low levels of nucleotide diversity (π = 0.014) were detected in O. hainanensis. Four major phylogenetic haplotype groups revealed a relationship between phylogeny and geography. Our results found that (i) the ancestral populations of O. hainanensis were distributed south of the Wuzhishan and Yinggeling mountains, including the Changhua River on Hainan Island, and then spread to the surrounding areas, (ii) the admixtures within lineages occurred between the Red River in North Vietnam and the Changhua River in western Hainan Island and (iii) indicated that the exposure of straits and shelves under water retreat, provides opportunities for population dispersion during glaciations.
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Affiliation(s)
- Wen-Jun Zhang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Jun-Jie Wang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Chao Li
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Jia-Qi Chen
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Wei Li
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Shu-Ying Jiang
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
| | - Kui-Ching Hsu
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Meiting Zhao
- Department of Geography, South China Normal University, Guangzhou, China
| | - Hung-Du Lin
- The Affiliated School of National Tainan First Senior High School, Tainan, Taiwan
| | - Jun Zhao
- Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, Guangdong Provincial Engineering Technology Research Center for Environmentally-friendly Aquaculture, Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring, School of Life Science, South China Normal University, Guangzhou, China
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He J, Lin S, Kong F, Yu J, Zhu H, Jiang H. Determinants of the beta diversity of tree species in tropical forests: Implications for biodiversity conservation. Sci Total Environ 2020; 704:135301. [PMID: 31796290 DOI: 10.1016/j.scitotenv.2019.135301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
The mapping of earth's biodiversity has advanced our theoretical and empirical understanding of biodiversity and has thus guided conservation efforts. Yet, early biodiversity maps often relied on alpha diversity indices, while beta diversity has rarely been used for practical conservation actions. We used generalized dissimilarity modelling (GDM) and variance partitioning to map beta diversity patterns of Hainan Island, China, and explore its underlying factors based on a large dataset of 248,538 individual trees belonging to 1,016 species in 902 forest plots. We used principal component analysis and hierarchical clustering to visualize community similarity, and spatial overlap analysis to assess the ability of the current protected areas (PAs) to encompass beta diversity. The GDMs explained 27.65% and 26.58% of the variation in beta diversity at the genus and species levels, respectively. The community composition of tree species in Hainan presented a general east-to-west gradient, and three floristic regions were delineated. This biogeographical pattern is predominantly structured by mean annual precipitation. Environmental variables, rather than geographical distance, were the most important factors determining present beta diversity patterns. Currently, PAs of Hainan Island are concentrated on mountain forest areas, while the lowland forest has largely been ignored. Thus, we suggest that biodiversity mapping based only on alpha diversity is not enough to identify conservation gaps, and the inclusion of beta diversity in such maps constitutes a promising tool to maximize the biodiversity coverage of PAs. Our study provides empirical evidence that a spatially explicit analysis of beta diversity in a specific region can be used for conservation planning.
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Affiliation(s)
- Jiekun He
- Spatial Ecology Laboratory, School of Life Sciences, South China Normal University, 510631 Guangzhou, China
| | - Siliang Lin
- Spatial Ecology Laboratory, School of Life Sciences, South China Normal University, 510631 Guangzhou, China
| | - Fanmao Kong
- Guangzhou Qimao Ecological Technology Co., Ltd., 510631 Guangzhou, China
| | - Jiehua Yu
- Spatial Ecology Laboratory, School of Life Sciences, South China Normal University, 510631 Guangzhou, China
| | - Hua Zhu
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, 666303 Mengla, China.
| | - Haisheng Jiang
- Spatial Ecology Laboratory, School of Life Sciences, South China Normal University, 510631 Guangzhou, China.
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Chen G, Wu H, Wang N, Zhong S, Zhou Y, Liang B. A mitogenomic phylogeny of spiders and complete mitochondrial genome of Cyriopagopus hainanus (Araneae:Theraphosidae). Mitochondrial DNA B Resour 2020; 5:782-783. [PMID: 33426276 PMCID: PMC7755316 DOI: 10.1080/23802359.2020.1715884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We describe the complete mitochondrial genome sequence of Cyriopagopus hainanus, a spider in the family of Theraphosidae and endemic to Hainan Island, China. Phylogenetic analyses using mitogenomes of 32 spider species from 20 families strongly supported our sample is sister to Cyriopagopus schmidti. This is also the largest mitogenomic phylogeny of spiders to date. The mitogenomic length of C. hainanus is 13,874 bp, including 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes, and 1 control region. The complete mitochondrial genome of C. hainanus will contribute to studies of mitogenomic evolution and trait evolution in spiders.
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Affiliation(s)
- Guode Chen
- Hainan Academy of Forestry, Haikou, China
| | - Haixia Wu
- Hainan Academy of Forestry, Haikou, China
| | - Ning Wang
- Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI, USA
| | | | - Yan Zhou
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Bin Liang
- Hainan Academy of Forestry, Haikou, China
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Zhong C, Li D, Zhang Y. Description of a new natural Sonneratia hybrid from Hainan Island, China. PhytoKeys 2020. [PMID: 32843846 DOI: 10.3897/phytokeys.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Here, we describe, illustrate and compare a new natural hybrid, Sonneratia × zhongcairongii Y. S. Wang & S. H. Shi (Sonneratiaceae), with its possible parent species. Based on its morphological characteristics and habitat conditions, this taxon is considered to represent a sterile hybrid between S. alba and S. apetala. In China, the new hybrid is only reported in the mangrove forest in Dongzhai Harbour, Hainan Island. It has intermediate characteristics with its parents by elliptical leaf blades, peltate stigma, terminal or axillary inflorescence with 1-3 flower dichasia, cup - shaped calyx (4-6 calyx lobes) and no petals. We also provide a key for the identification of Sonneratia species.
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Affiliation(s)
- Cairong Zhong
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, Guangdong 524048, China Hainan Academy of Forestry, Hainan Mangrove Research Institute Haikou China
- Hainan Academy of Forestry, Hainan Mangrove Research Institute. Haikou, Hainan, 571100, China Shaoguan University Shaoguan China
- College of Ying-Tong Agricultural Science and Engineering, Shaoguan University, Shaoguan, Guangdong 512005, China Lingnan Normal University Zhanjiang China
| | - Donglin Li
- College of Ying-Tong Agricultural Science and Engineering, Shaoguan University, Shaoguan, Guangdong 512005, China Lingnan Normal University Zhanjiang China
| | - Ying Zhang
- Life Science and Technology School, Lingnan Normal University, Zhanjiang, Guangdong 524048, China Hainan Academy of Forestry, Hainan Mangrove Research Institute Haikou China
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Lu Z, Sun Y. Rhamnella brachycarpa (Rhamnaceae), a new species from Hainan Island, China. PhytoKeys 2019; 132:19-29. [PMID: 31598066 PMCID: PMC6776559 DOI: 10.3897/phytokeys.132.36776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
Rhamnella brachycarpa Z. Qiang Lu & Y. Shuai Sun, a new evergreen woody species from Hainan Island, is described and illustrated. The specimens of this new species have previously been identified and placed under R. rubrinervis (H. Lév.) Rehder, with which it shares evergreen leaves, erect and climbing habits and axillary flowering branches with bracteole leaves. However, the specimens from three distinct Hainan populations significantly differ from those of R. rubrinervis from other regions with smaller length to width ratios of leaves, fruit and seeds, smaller sizes of fruit and seeds and mucronate seed apices. Principal Component Analysis of the closely related taxa, based on multiple morphological characters, further recognised two separated groups. One of them comprises R. tonkinensis and R. rubrinervis, the other merely includes all individuals from these distinct Hainan populations. Therefore, R. brachycarpa, based on these distinct Hainan populations, is here erected as a new species, distinctly different from its published relatives.
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Affiliation(s)
- Zhiqiang Lu
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, ChinaXishuangbanna Tropical Botanical Garden, Chinese Academy of SciencesMenglaChina
| | - Yongshuai Sun
- CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, ChinaXishuangbanna Tropical Botanical Garden, Chinese Academy of SciencesMenglaChina
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Zhang L, Wang L, Cunningham AB, Shi Y, Wang Y. Island blues: indigenous knowledge of indigo-yielding plant species used by Hainan Miao and Li dyers on Hainan Island, China. J Ethnobiol Ethnomed 2019; 15:31. [PMID: 31269961 PMCID: PMC6609400 DOI: 10.1186/s13002-019-0314-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 06/26/2019] [Indexed: 05/13/2023]
Abstract
BACKGROUND Historically, indigo-yielding plant species were important cash crops from Central Asia to the southern United States and Central America. Indigo-dyed textiles were widely traded along the legendary Silk Road that linked China to Europe. Today, due to the labor-intensive nature of indigo extraction at the household level, lifestyle changes and the widespread availability of commercially produced indigo paste, traditional indigo extraction methods have declined in villages. Yet Li textile weavers on Hainan Island are internationally recognized as producers of indigo-dyed textile using warp ikat techniques. In contrast, Hainan Miao weavers produce indigo-dyed textiles using batik (wax resist) techniques. The aim of this study was to document the indigenous knowledge on indigo-yielding plant species used by both Hainan Miao and Li people on Hainan Island, China. METHOD Ethnic uses were documented during three field surveys, through a questionnaire survey of 193 respondents, comprising 144 Hainan Miao and 49 Li traditional dyers. Mention index (QI), Availability index (AI), and Preference ranking (PR) of each indigo-yielding plant species were calculated to screen out plant resources with potential development value. RESULTS Five indigo-yielding plant species (from four plant families and four genera) were historically used by Hainan Miao and Li dyers. However, just four species are still in use. Strobilanthes cusia was the main indigo source for Hainan Miao dyers. Li dyers also commonly use Indigofera species (I. tinctoria and I. suffruticosa) for indigo extraction. Wrightia laevis is less commonly used as a contemporary indigo source. Indigo extraction by steeping in water to which lime is added to increase the pH is sharing by the five indigo-yielding plant species. Strobilanthes cusia had the highest QI, AI and PR values in Hainan Miao villages. Indigofera tinctoria had the highest QI and AI values, but Indigofera suffruticosa was preferred by Li dyers. CONCLUSION In the process of modernization and urbanization, some Hainan Miao and Li dyers retain the traditional indigo extraction methods. We found that Strobilanthes cusia and Indigofera tinctoria have the most potential for sustainable indigo production in the future. Furthermore, this study documents the details of extraction method from Wrightia laevis for the first time and the use of Ricinus communis seeds in that process. As one of the last places globally where Wrightia laevis is still used for indigo production, the may also be a nice market among textile collectors and museums that keeps the tradition of Wrightia laevis production and use for indigo extraction alive.
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Affiliation(s)
- Libin Zhang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Lu Wang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Anthony B. Cunningham
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201 China
- School of Veterinary and Life Sciences, Murdoch University, 90 South St, Murdoch, WA 6150 Australia
| | - Yuru Shi
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Yuhua Wang
- Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, 132# Lanhei Road, Kunming, 650201 China
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Abstract
Insect diversity is an indicator of environmental conditions. Frequent outbreaks of mangrove pests have threatened the fragile mangrove ecosystem in China and the sustainable utilization of mangrove resources. The understanding of mangrove pests, as well as a fundamental knowledge of insect diversity, in mangrove forests in China has been hindered by the difficulty of morphological species delimitation because captured insect specimens are either larvae or incompletely preserved adults. DNA barcoding technology uses only a small amount of DNA to conduct species identification. Taking advantage of this, we investigated the entomofauna of mangrove forests on Hainan Island by using a barcode combining cytochrome c oxidase subunit I (COI) and cytochrome-b (Cytb). We collected 627 specimens at six localities around the island, which were identified as 219 insect species belonging to 11 orders and 72 families. Lepidoptera, Coleoptera, and Hymenoptera are the most species-rich and abundant taxa. We also identified 13 mangrove pests, 5 parasitoids, and 12 species of predators.
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Affiliation(s)
- Lu Liu
- a State Key Laboratory of Biocontrol, Guangdong Key Lab of Plant Resources, School of Life Science, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zixiao Guo
- a State Key Laboratory of Biocontrol, Guangdong Key Lab of Plant Resources, School of Life Science, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Cairong Zhong
- b Hainan Dongzhai Harbor National Nature Reserve, Haikou, Hainan, China
| | - Suhua Shi
- a State Key Laboratory of Biocontrol, Guangdong Key Lab of Plant Resources, School of Life Science, Sun Yat-Sen University, Guangzhou, Guangdong, China
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Wu T, Xing Z, Yuan M, Ge J, Yuan G, Liang K, Wu B, Xiao F, Li C, Zhou Y, Lin F, Lu L. Analysis of HCV Isolates Among the Li Ethnic in Hainan Island of South China Reveals Their HCV-6 Unique Evolution and a New Subtype. Cell Physiol Biochem 2018; 50:1832-1839. [PMID: 30396187 DOI: 10.1159/000494863] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 10/26/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Hainan Island has been inhabited by the "Li" aboriginal minority for centuries where the HCV genotype distribution patterns maybe remarkably different from other parts of China. We aimed to provide a better understanding of the infection with HCV genotype 6 among "Li" aboriginals on Hainan Island. METHODS Firstly, using RT-PCR and DNA sequencing to determined 517 partial HCV Core-E1(115 from Li Ethnic, 402 from Han Ethnic) and 8 full-length genomes from Li ethnic in Hainan Island successfully, and then using the phylogenetic tree to determine the HCV genotype distribution and analyze the evolution of them. RESULTS Phylogenetic tree analysis showed that the distribution pattern of HCV genotypes among the Han and Li ethnic population exhibits significant diferences: 6a was the most prevalent subtype in Han ethnic of Hainan Island followed by 1b, 3b, 2a, 3a, and 1a. All genomes from Li ethnic were classified into genotype 6, while 84 out of 115 (73%) could not be classified. Nine sequences (HN1350 et al.) from Li ethnic might be assigned to a new subtype 6xh as their p-distances ranged from 5.9∼9.7%. Furthermore, we sequenced and characterized full-length genomes for eight HCV-6 isolates which were all from Li ethnic in Hainan Island. Among these isolates, the HN1350 was classified as a new subtype: 6xh. CONCLUSION Overall, we firstly defined a new subtype of genotype 6xh through partial and new full length genome. And we found a unique distribution pattern of HCV 6 in the Li tribe, which might provide a better way to understand the genetic diversity of HCV-6 and to investigate the phylogeny of HCV strains from Li tribe.
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Affiliation(s)
- Tao Wu
- Department of Infectious Disease, Hainan General Hospital, Haikou, China.,Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas, Kansas, USA
| | - Zengbo Xing
- Department of Infectious Disease,Wenchang City People's Hospital of Tongji Medical College, Wenchang, China
| | - Manqiong Yuan
- School of Public Health, Xiamen University, Xiamen, China
| | - Jun Ge
- Department of Infectious Disease, Hainan General Hospital, Haikou, China
| | - Guosheng Yuan
- Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas, Kansas, USA
| | - Kaijian Liang
- Department of Internal Medicine, Baisha People's Hospital, Baisha, China
| | - Biao Wu
- Department of Infectious Disease, Hainan General Hospital, Haikou, China
| | - Furong Xiao
- Department of Infectious Disease, Hainan General Hospital, Haikou, China
| | - Chunhua Li
- Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas, Kansas, USA
| | - Yuanping Zhou
- Department of Infectious Disease, Southern Medical University, Guangzhou, China
| | - Feng Lin
- Department of Infectious Disease, Hainan General Hospital, Haikou,
| | - Ling Lu
- Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas, Kansas, USA.,Laboratory for the Study of Hepatology, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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Huang B, Han M, Wang G, Huang S, Zeng J, Yuan Y, Dai P. Genetic mutations in non-syndromic deafness patients in Hainan Province have a different mutational spectrum compared to patients from Mainland China. Int J Pediatr Otorhinolaryngol 2018; 108:49-54. [PMID: 29605365 DOI: 10.1016/j.ijporl.2018.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/18/2018] [Accepted: 02/11/2018] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To provide appropriate genetic testing and counseling for non-syndromic hearing impairment patients in Hainan Province, an island in the South China Sea. METHODS 299 unrelated students with non-syndromic hearing loss who attended a special education school in Hainan Province were enrolled in this study. Three prominent deafness-related genes (GJB2, SLC26A4, and mtDNA 12S rRNA) were analyzed using Sanger sequencing. RESULTS GJB2 mutations were detected in 32.78% (98/299) of the entire cohort; however, only 5.69% (17/299) had two confirmed pathogenic mutations. The most common mutation observed in this population was c.109G > A in the GJB2 gene, with an allelic frequency of 15.05% (90/598), which is significantly higher than that reported in previous cohorts. A total of 16 patients had two confirmed pathogenic SLC26A4 gene mutations, and 16 patients had one. The IVS7-2A > G mutation was the most commonly observed, with an allelic frequency of 3.51% (21/598). Three patients had a m.1555A > G mutation in the mtDNA 12S rRNA gene. CONCLUSIONS These results reveal that genetic etiology occurred in 11.71% (35/299) of patients, suggesting that Hainan province have a different mutational spectrum compare to Mainland China in non-syndromic deafness patients, which provide useful information to genetic counseling in Hainan province.
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Affiliation(s)
- Bangqing Huang
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China
| | - Mingyu Han
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China; Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Guojian Wang
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - ShaSha Huang
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Jialing Zeng
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China
| | - Yongyi Yuan
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China.
| | - Pu Dai
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China.
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Wen Z, Zhao H, Liu L, OuYang ZY, Zheng H, Mi HX, Li YM. [Effects of land use changes on soil water conservation in Hainan Island, China]. Ying Yong Sheng Tai Xue Bao 2018; 28:4025-4033. [PMID: 29696899 DOI: 10.13287/j.1001-9332.201712.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
In tropical areas, a large number of natural forests have been transformed into other plantations, which affected the water conservation function of terrestrial ecosystems. In order to clari-fy the effects of land use changes on soil water conservation function, we selected four typical land use types in the central mountainous region of Hainan Island, i.e., natural forests with stand age greater than 100 years (VF), secondary forests with stand age of 10 years (SF), areca plantations with stand age of 12 years (AF) and rubber plantations with stand age of 35 years (RF). The effects of land use change on soil water holding capacity and water conservation (presented by soil water index, SWI) were assessed. The results showed that, compared with VF, the soil water holding capacity index of other land types decreased in the top soil layer (0-10 cm). AF had the lowest soil water holding capacity in all soil layers. Soil water content and maximum water holding capacity were significantly related to canopy density, soil organic matter and soil bulk density, which indicated that canopy density, soil organic matter and compactness were important factors influencing soil water holding capacity. Compared to VF, soil water conservation of SF, AF and RF were reduced by 27.7%, 54.3% and 11.5%, respectively. The change of soil water conservation was inconsistent in different soil layers. Vegetation canopy density, soil organic matter and soil bulk density explained 83.3% of the variance of soil water conservation. It was suggested that land use conversion had significantly altered soil water holding capacity and water conservation function. RF could keep the soil water better than AF in the research area. Increasing soil organic matter and reducing soil compaction would be helpful to improve soil water holding capacity and water conservation function in land management.
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Affiliation(s)
- Zhi Wen
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.,2.University of Chinese Academy of Sciences, Beijing 100049, China
| | - He Zhao
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.,2.University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Liu
- Hainan Yinggeling National Nature Reserve, Baisha 572800, Hainan, China
| | - Zhi Yun OuYang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hua Zheng
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.,2.University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong Xu Mi
- Hainan Yinggeling National Nature Reserve, Baisha 572800, Hainan, China
| | - Yan Min Li
- 2.University of Chinese Academy of Sciences, Beijing 100049, China.,4.Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, Fujian, China.,5.Xiamen Key Laboratory of Urban Metabolism, Xiamen 361021, Fujian, China
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Zeng WT, Yang YP, Zhang DQ, Liu B, Zhang HF, Wu DY, Wang XL. [Sources, Distribution of Main Controlling Factors, and Potential Ecological Risk Assessment for Heavy Metals in the Surface Sediment of Hainan Island North Bay, South China]. Huan Jing Ke Xue 2018; 39:1085-1094. [PMID: 29965452 DOI: 10.13227/j.hjkx.201705159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The distribution characteristics of the content of As, Cr, Cu, Hg, Pb, Zn, and Cd were researched based on the geochemical analysis of 159 surface sediment samples in Haikou Bay, Puqian Bay, Dongzhai Harbor, and Mulan Bay Mathematical statistics methods were used to interpret the sources of heavy metals, and the main controlling factors for heavy metal distribution were confirmed, having been analyzed qualitatively and semi-quantitatively. The results showed that the average contents of As, Cd, Cr, Cu, Hg, Pb, and Zn were 8.40, 0.06, 32.50, 8.32, 0.02, 18.77, and 35.87 μg·g-1, respectively. High contents of Cr, Cu, Hg, Pb, and Zn are mainly distributed in estuaries and harbors. The content of As increased gradually from south to north in the research area, while Cd gathered mainly in Haikou Bay. The source of Cu, Zn, Hg, Pb, Cr, and Cd in sediment was terrestrial input, which was controlled by anthropogenic pollution and migration of weathered products from mother rock. The source of As could be overseas material input. The grain size of sediment was the main factor controlling the contents of Cu, Zn, Hg, Pb, and Cr, and it was found that sediments with a finer grain size have more heavy metals adsorbed. The high As content was controlled mainly by the natural geological background factor, while the content of Cd reflected the difference in regional pollution caused by differing development in cities. Three surface sediment samples were evaluated as class Ⅱ of the National Marine Sediment Standard due to the content of As, while six surface sediment samples were evaluated as class Ⅱ due to the content of Cr, of which the pollution degree was moderate. The concentrations of Cd, Cu, Hg, Pb, and Zn in all of the 159 sediment samples fall in the Ⅰ class, of which the pollution degree is low. The degree of pollution for seven heavy metals were arranged in the following order:As > Cr > Pb > Zn > Cu > Cd > Hg. The potential ecological risk assessment results indicated that all heavy metals in surface sediment caused low levels of pollution generally, and that each heavy metal element was at a low ecological risk level. The order for the ecological risk of the seven heavy metals was:As > Hg > Cd > Pb > Cu > Cr > Zn; therefore, As was the main ecological risk factor. In general, the potential ecological risk for heavy metals was low, which illustrated that the marine environment in the study area was excellent.
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Affiliation(s)
- Wei-Te Zeng
- Hainan Marine Geological Survey, Haikou 570206, China.,College of Marine Geosciences, Ocean University of China, Qingdao 266100, China.,Hainan Bureau of Geology, Haikou 570206, China.,Hainan Geological Survey, Haikou 570206, China
| | | | | | - Bing Liu
- Hainan Marine Geological Survey, Haikou 570206, China.,Hainan Bureau of Geology, Haikou 570206, China
| | - Hang-Fei Zhang
- Hainan Geological Survey and Designing Institute, Haikou 570206, China
| | - Duo-Yu Wu
- Hainan Geological Survey and Designing Institute, Haikou 570206, China
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Xu F, Hu B, Li J, Cui R, Liu Z, Jiang Z, Yin X. Reassessment of heavy metal pollution in riverine sediments of Hainan Island, China: sources and risks. Environ Sci Pollut Res Int 2018; 25:1766-1772. [PMID: 29101701 DOI: 10.1007/s11356-017-0562-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
Riverine sediment samples from Hainan Island were collected in 2013 to assess the heavy metal pollution levels, sources, and associated environmental risks. The concentrations of Cr, Ni, Cu, Zn, As, Cd, and Pb measured in this study were 31.6-128.8 mg kg-1, 9.8-70.3 mg kg-1, 18.3-210.8 mg kg-1, 49.3-314.2 mg kg-1, 2.3-69.2 mg kg-1, 0.3-1.5 mg kg-1, and 23.2-113.4 mg kg-1, respectively. The results indicate that the sediment quality of Hainan Island has been obviously influenced by heavy metals. Based on the effect range classification, the heavy metals in Hainan riverine sediments likely have adverse biological effects on local ecosystems. The enrichment factor (EF), geoaccumulation index (Igeo), contamination factor (CF), and pollution load index (PLI) clearly reflect significant metal pollution in this region. The most significant pollution was observed in the northern and eastern parts of Hainan Island. The pollution levels of the three largest rivers on Hainan Island (i.e., the Nandu, Changhua, and Wanquan Rivers) were notably high. The results of this research will be useful in assessing and managing environmental pollution in this region. In the future, greater attention and further investigation should focus on the metal sources linked to further economic development on Hainan Island.
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Affiliation(s)
- Fangjian Xu
- School of Geosciences, China University of Petroleum, Qingdao, 266580, China.
- Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao, 266071, China.
- Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Bangqi Hu
- Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao, 266071, China.
- Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Jun Li
- Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao, 266071, China
- Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Ruyong Cui
- Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao, 266071, China
- Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China
| | - Zhaoqing Liu
- School of Geosciences, China University of Petroleum, Qingdao, 266580, China
| | - Zuzhou Jiang
- School of Geosciences, China University of Petroleum, Qingdao, 266580, China
| | - Xuebo Yin
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
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Li F, Lin ZF, Wen JS, Wei YS, Gan HY, He HJ, Lin JQ, Xia Z, Chen BS, Guo WJ, Tan CS, Cai HY. Risk assessment of trace metal-polluted coastal sediments on Hainan Island: A full-scale set of 474 geographical locations covering the entire island. Mar Pollut Bull 2017; 125:541-555. [PMID: 28969911 DOI: 10.1016/j.marpolbul.2017.09.057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 09/21/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
Hainan Island is the second largest island and one of the most famous tourist destinations in China, but sediment contamination by trace metals in coastal areas is a major issue. However, full-scale risk assessments of trace metal-polluted coastal sediments are lacking. In this study, coastal surface sediments from 474 geographical locations covering almost the entire island were collected to identify risk-related variables. Controlling factors and possible sources of trace metals were identified, and the toxicity effects were carefully evaluated. Our results suggest that trace-metal pollution in coastal sediments, which was mainly caused by Pb, Zn and Cu emissions, has primarily resulted from industrial sewage and shipping activities and has threatened the offshore ecosystem of Hainan Island and warrants extensive consideration. This is the first study that has systematically investigated trace metal-polluted coastal sediments throughout the entirety of Hainan Island and provides solid evidence for sustainable marine management in the region.
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Affiliation(s)
- Feng Li
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ze-Feng Lin
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Jia-Sheng Wen
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yan-Sha Wei
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hua-Yang Gan
- Guangzhou Marine Geological Survey, Guangzhou 510760, China; Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, China
| | - Hai-Jun He
- Guangzhou Marine Geological Survey, Guangzhou 510760, China; Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, China
| | - Jin-Qin Lin
- Guangzhou Marine Geological Survey, Guangzhou 510760, China; Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, China
| | - Zhen Xia
- Guangzhou Marine Geological Survey, Guangzhou 510760, China; Key Laboratory of Marine Mineral Resources, Ministry of Land and Resources, Guangzhou 510760, China
| | - Bi-Shuang Chen
- School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China.
| | - Wen-Jie Guo
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Cha-Sheng Tan
- Department of Hydraulic Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hua-Yang Cai
- School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, China
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Chen SM, Qiu L, Du ZH, Jin YM, Du JW, Chen Y, Watanabe C, Umezaki M. Spatial Clustering of Severe Hand-Foot-Mouth Disease Cases on Hainan Island, China. Jpn J Infect Dis 2017; 70:604-608. [PMID: 28890503 DOI: 10.7883/yoken.jjid.2016.407] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The incidence of severe hand-foot-mouth disease (HFMD) in Southeast and East Asia has increased in recent years. This study explored spatial clusters of the incidence and proportion of severe HFMD cases on Hainan Island, where the prevalence and mortality of HFMD were the highest in China during 2011. A spatial autocorrelation statistic (Anselin's Local Moran I) was calculated for the Empirical Bayesian (EB)-smoothed dataset of severe HFMD cases. Significant spatial clusters were detected for both the incidence and proportion of severe HFMD cases. Population density was higher in spatial clusters with a high proportion of severe HFMD cases among total HFMD cases. We speculate that a higher proportion of severe HFMD cases were diagnosed in densely populated townships. This should be considered when analyzing the HFMD database of Hainan Island.
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Affiliation(s)
- Shao-Ming Chen
- Hainan Provincial Center for Disease Control and Prevention.,Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo
| | - Li Qiu
- Hainan Provincial Center for Disease Control and Prevention
| | - Zhong-Hua Du
- Hainan Provincial Center for Disease Control and Prevention
| | - Yu-Ming Jin
- Hainan Provincial Center for Disease Control and Prevention
| | - Jian-Wei Du
- Hainan Provincial Center for Disease Control and Prevention
| | - Yan Chen
- Hainan Provincial Center for Disease Control and Prevention
| | - Chiho Watanabe
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo
| | - Masahiro Umezaki
- Department of Human Ecology, School of International Health, Graduate School of Medicine, The University of Tokyo
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Lin S, Jiang Y, He J, Ma G, Xu Y, Jiang H. Changes in the spatial and temporal pattern of natural forest cover on Hainan Island from the 1950s to the 2010s: implications for natural forest conservation and management. PeerJ 2017; 5:e3320. [PMID: 28533968 PMCID: PMC5436588 DOI: 10.7717/peerj.3320] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 04/15/2017] [Indexed: 11/20/2022] Open
Abstract
The study of the past, present, and future state and dynamics of the tropical natural forest cover (NFC) might help to better understand the pattern of deforestation and fragmentation as well as the influence of social and natural processes. The obtained information will support the development of effective conservation policies and strategies. In the present study, we used historical data of the road network, topography, and climatic productivity to reconstruct NFC maps of Hainan Island, China, from the 1950s to the 2010s, using the random forest algorithm. We investigated the spatial and temporal patterns of NFC change from the 1950s to the 2010s and found that it was highly dynamic in both space and time. Our data showed that grid cells with low NFC were more vulnerable to NFC decrease, suggesting that conservation actions regarding natural forests need to focus on regions with low NFC and high ecological value. We also identified the hot spots of NFC change, which provides insights into the dynamic changes of natural forests over time.
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Affiliation(s)
- Siliang Lin
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
| | - Yaozhu Jiang
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
| | - Jiekun He
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
| | - Guangzhi Ma
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
| | - Yang Xu
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
| | - Haisheng Jiang
- School of Life Science, South China Normal University, Guangzhou, Guangdong, China
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Ding Y, Zang R, Lu X, Huang J. The impacts of selective logging and clear-cutting on woody plant diversity after 40years of natural recovery in a tropical montane rain forest, south China. Sci Total Environ 2017; 579:1683-1691. [PMID: 27923573 DOI: 10.1016/j.scitotenv.2016.11.185] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/22/2016] [Accepted: 11/25/2016] [Indexed: 06/06/2023]
Abstract
Historically, clear-cutting and selective logging have been the commercial logging practices. However, the effect of these pervasive timber extraction methods on biodiversity in tropical forests is still poorly understood. In this study, we compared abiotic factors, species diversity, community composition, and structure between ca. 40-year-old clear-cut (MCC); ca. 40-year-old selectively logged (MSL); and tropical old growth montane rain forests (MOG) on Hainan Island, China. Results showed that there were a large number of trees with a diameter at breast height (DBH) <30cm in the two logged forests. Additionally, the two logged forests only had 40% of the basal area of the large trees (DBH≥30cm) found in the old growth forest. The species richness and Shannon-Wiener diversity indices generally showed no difference among the three forest types. MCC had 70% of the species richness of the large trees in the MOG, whereas MSL and MOG had similar species richness. High value timber species had similar species richness among the three forest types, but a lower abundance and basal area of large trees in MCC. The species composition was distinct between the three forests. Large trees belonging to the family Fagaceae dominated in the logged forests and played a more important role in the old growth forest. Huge trees (DBH≥70cm) were rare in MCC, but were frequently found in MSL. Most abiotic factors varied inconsistently among the three forest types and few variables related to species diversity, community structure and composition. Our study indicated that MSL had a relatively faster recovery rate than MCC in a tropical montane rain forest after 40years, but both logged forests had a high recovery potential over a long-term.
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Affiliation(s)
- Yi Ding
- Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of the State Forestry Administration, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
| | - Runguo Zang
- Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of the State Forestry Administration, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China.
| | - Xinghui Lu
- Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of the State Forestry Administration, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
| | - Jihong Huang
- Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Key Laboratory of Forest Ecology and Environment of the State Forestry Administration, Beijing 100091, China; Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, 210037, China
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Li DL, Xing FW. Ethnobotanical study on medicinal plants used by local Hoklos people on Hainan Island, China. J Ethnopharmacol 2016; 194:358-368. [PMID: 27444693 DOI: 10.1016/j.jep.2016.07.050] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 06/29/2016] [Accepted: 07/16/2016] [Indexed: 05/21/2023]
Abstract
AIMS OF THE STUDY The aim of this study is to collect information on the use of medicinal plants by the local Hoklos people on Hainan Island, and compare medicinal traditions in the study area with Li medicines (LM) and traditional Chinese medicines (TCM). MATERIALS AND METHODS Ethnobotanical data were collected by 3 means: semi-structured interviews, personal conversation and guided field trips. There were 27 informants from 9 towns and 14 villages who were visited. Quantitative indices (Informant Consensus Factor - FIC, Use Value - UV, and Fidelity Level - FL) were calculated. RESULTS In the present study, 264 species from 92 families and 233 genera were recorded, with Compositae (20 species), Leguminosae (19 species), Rubiaceae (12 species) and Gramineae (11 species) as predominate families. Leaves were the most frequently used parts in the preparation of local medicines. The most common preparation method was decoction (452 mentions). The plant with the highest values was Eclipta prostrata (0.46). The 6 plant species with the maximum FL (100%) were Atalantia buxifolia (Poir.) Oliv., Garcinia oblongifolia Champ. ex Benth., Hypericum japonicum Thunb. ex Murray, Imperata cylindrica (L.) Beauv., Microcos paniculata L., and Psidium guajava L. In addition, 120 investigated human ailments were grouped into 10 categories, within which symptoms and signs (184 mentions), diseases of the skin and subcutaneous tissue (139 mentions) and diseases of the digestive system (94 mentions) were the most mentioned in our investigation. The informant consensus about using medicinal plants ranged from 0.27 to 0.48, which showed a high level of agreement among the informants on symptoms and signs (0.48) and certain infectious and parasitic diseases (0.43). In comparison with TCM and LM, the results reflected a closer connection between local medicine and TCM. CONCLUSION The information reported by Hoklos people is of great value to ethnic medicinal culture. However, this precious medicinal knowledge is at risk of being lost due to rapid degradation of the environment. It is essential that more people engage in in-depth studies on local medicinal plants and relevant organizations address this serious problem before the damage is irreversible.
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Affiliation(s)
- Dong-Lin Li
- South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Fu-Wu Xing
- South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, China.
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Chen X, Xie X, Ren S, Wang X. A taxonomic review of the genus Horniolus Weise from China, with description of a new species (Coleoptera, Coccinellidae). Zookeys 2016:105-123. [PMID: 27843391 PMCID: PMC5096399 DOI: 10.3897/zookeys.623.10191] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 09/27/2016] [Indexed: 12/02/2022] Open
Abstract
Five species of the genus Horniolus Weise, 1901 from China are revised, including the description of a new species, Horniolushainanensis Chen & Ren, sp. n.Horniolussonduongensis Hoàng, 1979 is reported from China for the first time. A key to the species from China is provided. Nomenclatural history, diagnoses, detailed descriptions, illustrations, and distribution for each species have been provided. A checklist of all known species of this genus is also presented.
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Affiliation(s)
- Xiaosheng Chen
- College of Forestry and Landscape Architecture, South China Agricultural University; Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm; Research Center of Agricultural Pest Biocontrol of Guangdong Province, Guangzhou 510642, China
| | - Xiufeng Xie
- Guangdong Agriculture Industry Business Polytechnic College, Guangzhou 510507, China
| | - Shunxiang Ren
- Research Center of Agricultural Pest Biocontrol of Guangdong Province, Guangzhou 510642, China
| | - Xingmin Wang
- Research Center of Agricultural Pest Biocontrol of Guangdong Province, Guangzhou 510642, China
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Xu F, Tian X, Yin F, Zhao Y, Yin X. Heavy metals in the surface sediments of the northern portion of the South China Sea shelf: distribution, contamination, and sources. Environ Sci Pollut Res Int 2016; 23:8940-8950. [PMID: 26822212 DOI: 10.1007/s11356-016-6151-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 01/20/2016] [Indexed: 06/05/2023]
Abstract
The concentrations of seven heavy metals (Cr, Ni, Cu, Zn, As, Cd, and Pb) in the surface sediments of the northern portion of the South China Sea (SCS) shelf collected between 2012 and 2014 were measured to assess the potential contamination levels and determine the environmental risks that are associated with heavy metals in the area. The measured concentrations in the sediments were 12.4-72.5 mg kg(-1) for Cr, 4.4-29.2 mg kg(-1) for Ni, 7.1-38.1 mg kg(-1) for Cu, 19.3-92.5 mg kg(-1) for Zn, 1.3-12.1 mg kg(-1) for As, 0.03-0.24 mg kg(-1) for Cd, and 8.5-24.4 mg kg(-1) for Pb. These results indicate that the heavy metal concentrations in the sediments generally meet the China Marine Sediment Quality criteria and suggest that the overall sediment quality of the northern portion of the SCS shelf has not been significantly impacted by heavy metal pollution. However, the enrichment factor (EF) and geoaccumulation index (I geo) clearly show that elevated concentrations of Cd occur in the region. A Pearson's correlation analysis was performed, and the results suggest that Cr, Ni, Cu, and Zn have a natural origin; Cd is primarily sourced from anthropogenic activities, with partial lithogenic components, and As and Pb may be affected by factors such as varying input sources or pathways (i.e., coal burning activities and aerosol precipitation). Heavy metal contamination mostly occurred to the east of Hainan Island, mainly because of the rapid economic and social developments in the Hainan Island. The results of this study will be useful for marine environment managers for the remediation of pollution sources.
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Affiliation(s)
- Fangjian Xu
- School of Geosciences, China University of Petroleum, Changjiang West Road 66#, Qingdao, Shandong, 266580, China.
| | - Xu Tian
- School of Geosciences, China University of Petroleum, Changjiang West Road 66#, Qingdao, Shandong, 266580, China
| | - Feng Yin
- Exploration Company, SINOPEC, Chengdu, 610041, China
| | - Yongfang Zhao
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Xuebo Yin
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
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Meng R, Wang Y. Descriptions of new species of the genera Sarima Melichar and Sarimodes Matsumura from southern China (Hemiptera, Fulgoromorpha, Issidae). Zookeys 2016:93-109. [PMID: 26877702 PMCID: PMC4740839 DOI: 10.3897/zookeys.557.6166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 12/14/2015] [Indexed: 11/12/2022] Open
Abstract
Two Issini genera, Sarima Melichar, 1903 and Sarimodes Matsumura, 1916, are examined. One new Sarima species: Sarima bifurcus sp. n. and two new Sarimodes species Sarimodes clavatus sp. n. and Sarimodes parallelus sp. n. are added from South China. A checklist of species in the genus Sarima with data on distribution is provided. The distribution and morphological peculiarities of the genera Sarima and Sarimodes are briefly discussed.
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Affiliation(s)
- Rui Meng
- Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education; Entomological Museum, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yinglun Wang
- Key Laboratory of Plant Protection Resources and Pest Management of the Ministry of Education; Entomological Museum, Northwest A&F University, Yangling, Shaanxi 712100, China
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Xu F, Tian X, Yin X, Yan H, Yin F, Liu Z. Trace metals in the surface sediments of the eastern continental shelf of Hainan Island: Sources and contamination. Mar Pollut Bull 2015; 99:276-283. [PMID: 26233301 DOI: 10.1016/j.marpolbul.2015.07.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Revised: 07/22/2015] [Accepted: 07/25/2015] [Indexed: 06/04/2023]
Abstract
Major (Al) and trace metal (Cu, Pb, Zn, Cr, Ni, Cd, and As) concentrations in 29 surface sediment samples from the eastern continental shelf of Hainan Island were evaluated to determine the level of contamination. A multivariate analysis indicated that the sources of Cd, As, and Pb were primarily anthropogenic, whereas the sources of Cu, Zn, Cr, and Ni were primarily natural and/or partially anthropogenic. Enrichment factor (EF) and geoaccumulation index (Igeo) values were calculated to assess the anthropogenic contamination in the region. Both the EF and Igeo values indicated relatively elevated Cd and As concentrations. This study provides a useful aid for sustainable marine management in the region.
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Affiliation(s)
- Fangjian Xu
- School of Geosciences, China University of Petroleum, Qingdao 266580, China.
| | - Xu Tian
- School of Geosciences, China University of Petroleum, Qingdao 266580, China
| | - Xuebo Yin
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Huimei Yan
- School of Geosciences, China University of Petroleum, Qingdao 266580, China
| | - Feng Yin
- Exploration Company, SINOPEC, Chengdu 610041, China
| | - Zhaoqing Liu
- School of Geosciences, China University of Petroleum, Qingdao 266580, China
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Guo XX, Li CX, Wang G, Zheng Z, Dong YD, Zhang YM, Xing D, Zhao TY. Host feeding patterns of mosquitoes in a rural malaria-endemic region in hainan island, china. J Am Mosq Control Assoc 2014; 30:309-311. [PMID: 25843138 DOI: 10.2987/14-6439r.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Malaria is endemic in Wangxia Village of Hainan Island. In this area little is known about the host seeking behavior and feeding habit of mosquitoes. Three sites representing the most common habitat types in the village were selected to study the host seeking behavior and feeding habit of mosquitoes. Of the total 9 species belonging to 4 genera (Armigeres, Culex, Aedes, and Anopheles) collected in Wangxia Village, Culex tritaeniorhynchus and Cx. pipiens quinquefasciatus were the most commonly collected species. Armigeres subalbatus and Anopheles sinensis were moderately common species. Blood meal analysis confirmed that Cx. tritaeniorhynchus and Cx. p. quinquefasciatus fed on multiple hosts, mainly poultry but occasionally other animals. Anopheles sinensis, a vector of malaria, fed predominately on cattle hosts, followed by humans. Anopheles maculatus and An. barbirostris fed on both humans and domestic animals. Our results indicate that most mosquitoes in this area preferred domestic animals over humans and showed a tendency to feed on multiple hosts within the same gonotrophic cycle. Therefore, the potential role of domestic animals in arbovirus transmission should be evaluated as part of a strategy for controlling mosquito-borne diseases in this region.
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Affiliation(s)
- Xiao-Xia Guo
- 1 Department of Vector Biology and Control, State Key Laboratory of Pathogens and Biosecurity, Institute of Microbiology and Epidemiology, Beijing 100071, China
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An Y, Wu T, Wang M, Lu L, Li C, Zhou Y, Fu Y, Chen G. Conservation in China of a novel group of HCV variants dating to six centuries ago. Virology 2014; 464-465:21-25. [PMID: 25043585 DOI: 10.1016/j.virol.2014.06.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 05/15/2014] [Accepted: 06/10/2014] [Indexed: 12/18/2022]
Abstract
UNLABELLED We characterized a novel group of HCV variants that are genetically related but distinct from each other belonging to genotype 6 (HCV-6). From 26 infected Austronesian-descended aborigines on Hainan Island, China, HCV sequences were determined followed by genetic analyses. Six nearly full-length genomes and 20 E1 sequences of HCV were obtained, which differ from each other and from all known HCV lineages by nucleotides above the intra-subtype level of 13%. Together with subtypes 6g and 6w, they constitute a phylogenetic group sharing a common ancestor dating from the end of the 12th century. CONCLUSION Our data indicate the maintenance of an isolated HCV-6 indigenous circulation on Hainan Island at least for six centuries.
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Affiliation(s)
- Yuling An
- Department of Liver Transplantation, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Tao Wu
- Department of Infectious Disease, Southern Medical University, Guangzhou, Guangdong 510515, China; Department of Infectious Disease, Hainan General Hospital, Haikou, Hainan 570311, China
| | - Min Wang
- Guangzhou Blood Center, Guangzhou, Guangdong 510095, China
| | - Ling Lu
- Department of Liver Transplantation, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China; Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.
| | - Chunhua Li
- Center for Viral Oncology, Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Yuanpin Zhou
- Department of Infectious Disease, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yongshui Fu
- Guangzhou Blood Center, Guangzhou, Guangdong 510095, China
| | - Guihua Chen
- Department of Liver Transplantation, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China
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Hu B, Cui R, Li J, Wei H, Zhao J, Bai F, Song W, Ding X. Occurrence and distribution of heavy metals in surface sediments of the Changhua River Estuary and adjacent shelf ( Hainan Island). Mar Pollut Bull 2013; 76:400-5. [PMID: 24035428 DOI: 10.1016/j.marpolbul.2013.08.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 08/15/2013] [Accepted: 08/16/2013] [Indexed: 05/22/2023]
Abstract
Heavy metal (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) concentrations in surface sediments from the Changhua River Estuary and adjacent shelf, western Hainan Island, were conducted to evaluate the level of contamination. Numerical Sediment Quality Guidelines (TEL and PEL) were applied to assess adverse biological effects of these metals, suggesting that occasional biological effect may occur due to As, Cr, Cu, Ni, and Pb. Enrichment factors shown that the significant As and Pb contaminations in the study area. Multivariate analysis indicated that the sources of Cd, Cr, Cu, Hg, Ni and Zn resulted primarily from natural weathering processes, whereas As and Pb were mainly attributed to anthropogenic sources. The results of this study would provide a useful aid for sustainable marine management in the region.
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Affiliation(s)
- Bangqi Hu
- Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Qingdao Institute of Marine Geology, Ministry of Land and Resources, Qingdao 266071, China; Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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Zheng XL, Wei JH, Sun W, Li RT, Liu SB, Dai HF. Ethnobotanical study on medicinal plants around Limu Mountains of Hainan Island, China. J Ethnopharmacol 2013; 148:964-74. [PMID: 23751393 DOI: 10.1016/j.jep.2013.05.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 05/30/2013] [Accepted: 05/31/2013] [Indexed: 05/21/2023]
Abstract
AIM OF THE STUDY The main objectives were to document traditional knowledge on the use of medicinal plants and compare medicinal plant traditions between Li and Hmong living around Limu Mountains of Hainan Island. MATERIAL AND METHODS Information was obtained from semi-structured interviews, personal conversation and guided fieldtrips with herbalists. Quantitative methods, such as the coefficient of similarity (S), Chi-square analysis and the 'informant agreement ratio' were applied for the comparison of medicinal plant tradition between Li and Hmong. RESULTS In all, 224 plant species grown in the study areas are still traditionally used for the treatment of various diseases. Euphorbiaceae (17 species), Rubiaceae (16 species), Papilionaceae and Poaceae (11 species, respectively), Verbenaceae (10 species) and Compositae (7 species) are predominant families used by herbalists. The most species were reported to be used for injuries (25.1% of all the medicinal use-reports), digestive system disorders (24.8%), infections/infestations (14.7%) and muscular-skeletal system disorders (12.3%). The coefficient of similarity (29.0%) shows a relatively high overlap of medicinal plants used by Li and Hmong. Using Chi-square analysis, it was found that habit mentions were dependent upon the culture. Infections/infestations, injuries and muscular-skeletal system disorders scored high IAR value and mention in both Li and Hmong communities. CONCLUSIONS Medicinal plants are of importance to indigenous people around Limu Mountains who still rely on medicinal plants to treat a wide range of illnesses. There is a close relationship of medicinal plant tradition between Li and Hmong who are culturally distinct.
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Affiliation(s)
- Xi-long Zheng
- Hainan Branch Institute of Medicinal Plant Development Chinese Academy of Medical Sciences, Wanning 571533, China
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