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Xu FF, Chen WQ, Liu W, Liu SS, Wang YX, Chen J, Cui J, Zhang X. Genetic structure of Spirometra mansoni (Cestoda: Diphyllobothriidae) populations in China revealed by a Target SSR-seq method. Parasit Vectors 2022; 15:485. [PMID: 36564786 PMCID: PMC9789593 DOI: 10.1186/s13071-022-05568-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/02/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In China, the plerocercoid of the cestode Spirometra mansoni is the main causative agent of human and animal sparganosis. However, the population genetic structure of this parasite remains unclear. In this study, we genotyped S. mansoni isolates with the aim to improve current knowledge on the evolution and population diversity of this cestode. METHODS We first screened 34 perfect simple sequence repeats (SSRs) using all available omic data and then constructed target sequencing technology (Target SSR-seq) based on the Illumina NovaSeq platform. Next, a series of STRUCTURE. clustering, principal component, analysis of molecular variance and TreeMix analyses were performed on 362 worm samples isolated from 12 different hosts in 16 geographical populations of China to identify the genetic structure. RESULTS A total of 170 alleles were detected. The whole population could be organized and was found to be derived from the admixture of two ancestral clusters. TreeMix analysis hinted that possible gene flow occurred from Guizhou (GZ) to Sichuan (SC), SC to Jaingxi (JX), SC to Hubei (HB), GZ to Yunnan (YN) and GZ to Jiangsu (JS). Both neighbor-joining clustering and principal coordinate analysis showed that isolates from intermediate hosts tend to cluster together, while parasites from definitive hosts revealed greater genetic differences. Generally, a S. mansoni population was observed to harbor high genetic diversity, moderate genetic differentiation and a little genetic exchange among geographical populations. CONCLUSIONS A Target SSR-seq genotyping method was successfully developed, and an in-depth view of genetic diversity and genetic relationship will have important implications for the prevention and control of sparganosis.
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Affiliation(s)
- Fang Fang Xu
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Wen Qing Chen
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Wei Liu
- grid.257160.70000 0004 1761 0331Research Center for Parasites and Vectors, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128 Hunan China
| | - Sha Sha Liu
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Yi Xing Wang
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Jing Chen
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Jing Cui
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
| | - Xi Zhang
- grid.207374.50000 0001 2189 3846Department of Parasitology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001 Henan China
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Radačovská A, Čisovská Bazsalovicsová E, Šoltys K, Štefka J, Minárik G, Gustinelli A, Chugunova JK, Králová-Hromadová I. Unique genetic structure of the human tapeworm Dibothriocephalus latus from the Alpine lakes region - a successful adaptation? Parasitology 2022; 149:1106-1118. [PMID: 35570686 PMCID: PMC11010471 DOI: 10.1017/s0031182022000634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/22/2022] [Accepted: 04/29/2022] [Indexed: 11/07/2022]
Abstract
Dibothriocephalus latus is the most frequent causative agent of fish-borne zoonosis (diphyllobothriosis) in Europe, where it is currently circulating mainly in the Alpine lakes region (ALR) and Russia. Three mitochondrial genes (cox1, cob and nad3) and 6 microsatellite loci were analysed to determine how is the recently detected triploidy/parthenogenesis in tapeworms from ALR displayed at the DNA level. A geographically distant population from the Krasnoyarsk Reservoir in Russia (RU-KR) was analysed as a comparative population. One or 2 alleles of each microsatellite locus was detected in plerocercoids from RU-KR, corresponding to the microsatellite pattern of a diploid organism. In contrast, 1–3 alleles were observed in tapeworms from ALR, in accordance with their triploidy. The high diversity of mitochondrial haplotypes in D. latus from RU-KR implied an original and relatively stable population, but the identical structure of mitochondrial genes of tapeworms from ALR was probably a consequence of a bottleneck typical of introduced populations. These results indicated that the diploid/sexually reproducing population from RU-KR was ancestral, located within the centre of the distribution of the species, and the triploid/parthenogenetically reproducing subalpine population was at the margin of the distribution. The current study revealed the allelic structure of the microsatellite loci in the triploid tapeworm for the first time.
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Affiliation(s)
- Alžbeta Radačovská
- Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovakia
| | | | - Katarína Šoltys
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 84215 Bratislava, Slovakia
| | - Jan Štefka
- Biology Centre CAS, Institute of Parasitology, Branišovská 31, 37005 České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, Branišovská 1760, 37005 České Budějovice, Czech Republic
| | - Gabriel Minárik
- Medirex, a.s., Galvaniho 17/C, P.O. Box 143, 82016 Bratislava, Slovakia
| | - Andrea Gustinelli
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, BO, Italy
| | - Julia K. Chugunova
- Krasnoyarsk Branch of the Russian Federal Research Institute of Fisheries and Oceanography ‘VNIRO’, Parizhskoi Kommuny, 33, 660097 Krasnoyarsk, Russia
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Wan H, Wei Q, Ji Q, Lan H, Dai X, Chen W, Dong Y, Zeng C. The karyotype, genome survey, and assembly of Mud artemisia (Artemisia selengensis). Mol Biol Rep 2021; 48:5897-5904. [PMID: 34297325 DOI: 10.1007/s11033-021-06584-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 07/20/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Artemisia selengensis is traditional Chinese medicine and phytochemical analysis indicated that A. selengensis contains essential oils, fatty acids and phenolic acids. The lack of reference genomic information may lead to tardiness in molecular biology research of A. selengensis. METHOD AND RESULTS Karyotype analysis, genome survey, and genome assembly was employed to acquire information on the genome structure of A. selengensis. The chromosome number is 2n = 2x = 36, karyotype formula is 28 m + 8Sm, karyotype asymmetry coefficient is 58.8%, and karyotypes were symmetric to Stebbins' type 2A. Besides, the flow cytometry findings reported that the mean peak value of fluorescent intensity is 1,170,677, 2C DNA content is 12 pg and the genome size was estimated to be approximately 5.87 Gb. Furthermore, the genome survey generates 341,478,078 clean reads, unfortunately, after K-mer analysis, no significant peak can be observed, the heterozygosity, repetitive rate and genome size was unable to estimated. It is speculated that this phenomenon might be due to the complexity of genome structure. 37,266 contigs are preliminary assembled with Oxford Nanopore Technology (ONT) sequencing, totaling 804 Mb and GC content was 34.08%. The total length is 804,475,881 bp, N50 is 29,624 bp, and the largest contig length is 239,792 bp. CONCLUSION This study reveals the preliminary information of genome size of A. selengensis. These findings may provide supportive information for sequencing and assembly of whole-genome sequencing and encourage the progress of functional gene discovery, genetic improvement, evolutionary study, and structural studies of A. selengensis.
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Affiliation(s)
- Heping Wan
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Qingying Wei
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Qiangqiang Ji
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Hong Lan
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Xigang Dai
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Weida Chen
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Yuanhuo Dong
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China
| | - Changli Zeng
- Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River BasinSchool of Life Science, Jianghan University, Wuhan, 430056, China.
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Bazsalovicsová E, Králová-Hromadová I, Juhásová L, Mikulíček P, Oravcová A, Minárik G, Štefka J. Comparative analysis of monozoic fish tapeworms Caryophyllaeus laticeps (Pallas, 1781) and recently described Caryophyllaeus chondrostomi Barčák, Oros, Hanzelová, Scholz, 2017, using microsatellite markers. Parasitol Res 2020; 119:3995-4004. [PMID: 33000432 DOI: 10.1007/s00436-020-06898-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/20/2020] [Indexed: 11/25/2022]
Abstract
The monozoic tapeworm Caryophyllaeus laticeps has been characterized by five markedly different morphotypes largely corresponding to different fish hosts. Recently, the most distinct morphotype 4 from the common nase Chondrostoma nasus was studied in more details resulting in description of a new species Caryophyllaeus chondrostomi. The molecular study based on mitochondrial cox1 and ribosomal lsrDNA did not reveal any interspecific differences between C. laticeps and C. chondrostomi and did not provide any molecular support for recognition of these two species. In the current study, six polymorphic microsatellite markers were applied in order to detect molecular differences between the two species and to provide molecular evidence of validity of C. chondrostomi. While all six microsatellite loci were amplified in different geographic populations of C. laticeps, only two of them provided the amplification product in C. chondrostomi. Results on the Bayesian analysis assigned C. chondrostomi and all geographic populations of C. laticeps to distinct clusters. Neither any close relationships among C. laticeps populations nor specific position of C. chondrostomi were revealed. Contrary, the results of the principal coordinate analysis revealed striking genetic separation of C. chondrostomi with no overlaps with any of the C. laticeps population or morphotype. Caryophyllaeus chondrostomi very probably underwent morphological divergence as a result of ongoing speciation, but this process has not yet been accompanied by sufficient genetic divergence. In this particular case, microsatellites were proved to be better molecular discriminative markers than rDNA and mtDNA.
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Affiliation(s)
- Eva Bazsalovicsová
- Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01, Košice, Slovakia
| | - Ivica Králová-Hromadová
- Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01, Košice, Slovakia.
| | - Ludmila Juhásová
- Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, 040 01, Košice, Slovakia
| | - Peter Mikulíček
- Department of Zoology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 842 15, Bratislava, Slovakia
| | - Alexandra Oravcová
- Medirex, a.s, Galvaniho 17/C, P.O. Box 143, 820 16, Bratislava, Slovakia
| | - Gabriel Minárik
- Medirex, a.s, Galvaniho 17/C, P.O. Box 143, 820 16, Bratislava, Slovakia
| | - Jan Štefka
- Biology Centre CAS, Institute of Parasitology, and Faculty of Science, University of South Bohemia, Branišovská 31, 370 05, České Budějovice, Czech Republic
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Li Z, Tian C, Huang Y, Lin X, Wang Y, Jiang D, Zhu C, Chen H, Li G. A First Insight into a Draft Genome of Silver Sillago ( Sillago sihama) via Genome Survey Sequencing. Animals (Basel) 2019; 9:ani9100756. [PMID: 31581597 PMCID: PMC6827152 DOI: 10.3390/ani9100756] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 09/27/2019] [Indexed: 11/16/2022] Open
Abstract
Sillago sihama has high economic value and is one of the most attractive aquaculture species in China. Despite its economic importance, studies of its genome have barely been performed. In this study, we conducted a first genomic survey of S. sihama using next-generation sequencing (NGS). In total, 45.063 Gb of high-quality sequence data were obtained. For the 17-mer frequency distribution, the genome size was estimated to be 508.50 Mb. The sequence repeat ratio was calculated to be 21.25%, and the heterozygosity ratio was 0.92%. Reads were assembled into 1,009,363 contigs, with a N50 length of 1362 bp, and then into 814,219 scaffolds, with a N50 length of 2173 bp. The average Guanine and Cytosine (GC) content was 45.04%. Dinucleotide repeats (56.55%) were the dominant form of simple sequence repeats (SSR).
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Affiliation(s)
- Zhiyuan Li
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Changxu Tian
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
| | - Yang Huang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
| | - Xinghua Lin
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Yaorong Wang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Dongneng Jiang
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
| | - Chunhua Zhu
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
| | - Huapu Chen
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
| | - Guangli Li
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang 524025, China.
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Barcak D, Oros M, Hanzelova V, Scholz T. A synoptic review of Caryophyllaeus Gmelin, 1790 (Cestoda: Caryophyllidea), parasites of cyprinid fishes. Folia Parasitol (Praha) 2017; 64. [DOI: 10.14411/fp.2017.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 06/18/2017] [Indexed: 11/19/2022]
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