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Wright E, Carrillo MA, Matamoros D, Sanchez RC, Yañez J, Di Lorenzo G, Villa JM, Kroeger A. Applicability of the Mexican ovitrap system for Aedes vector surveillance in Colombia. Pathog Glob Health 2023; 117:554-564. [PMID: 36384430 PMCID: PMC10392324 DOI: 10.1080/20477724.2022.2146049] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ovitraps can detect Aedes vectors at an early stage and can serve as an alarm indicator for outbreak prediction. This study aimed to summarize the available literature about the ovitrap system and to determine its feasibility, required resources and costs when installing and maintaining this vector surveillance system in the municipality of Los Patios, Colombia. A scoping review to assess the role of ovitraps as a tool for Aedes vector surveillance was conducted. The subsequent fieldwork consisted of mapping the municipality, manufacturing, and installing 40 ovitraps in 10 blocks, revising them weekly for 4 weeks by two half-time employed vector control technicians, and carrying out a cost analysis. A total of 38 studies were included in this review showing that ovitraps had a better performance than other entomological surveillance methods and a positive correlation with other entomological and disease variables. From the field results over 4 weeks, a high proportion of positive ovitraps (80%, 90%, 75%, 97.5%) and positive blocks (100%) as well as a good acceptance by house owners (76.9%), were identified. Operational indicators such as average installation time of the ovitraps (10h15 m), weekly reading and reinstallation (on average 7h27 m) and the cost of the intervention (COL$1,142,304.47/US$297) were calculated. Literature shows that ovitraps are sensitive to detect the presence of Aedes mosquitoes, providing data efficiently and timely for outbreak prediction. The field testing showed it is an affordable and feasible method in the context of a Colombian municipality and similar endemic areas.
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Affiliation(s)
- Eduardo Wright
- Centre for Medicine and Society, Master Programme Global Urban Health, Albert-Ludwigs University Freiburg, Freiburg in Breisgau, Germany
| | - Maria Angelica Carrillo
- Centre for Medicine and Society, Master Programme Global Urban Health, Albert-Ludwigs University Freiburg, Freiburg in Breisgau, Germany
| | - David Matamoros
- International Training Centre, International Master of Science in Rural Development, University of Ghent, Ghent, Belgium
| | - Rocío Cárdenas Sanchez
- Departamento de Control de Vectores, Instituto Departamental Norte de Santander, Cúcuta, Colombia
| | - Johanna Yañez
- Departamento de Control de Vectores, Instituto Departamental Norte de Santander, Cúcuta, Colombia
| | - Giusseppe Di Lorenzo
- Consultorio de Medicina General, Centro Médico Familiar Di Lorenzo, El Triunfo, Ecuador
| | - Juan Manuel Villa
- Direccion de Hospitales, Secretaria de Salud del Estado de Nuevo Leon, Monterrey, Mexico
| | - Axel Kroeger
- Centre for Medicine and Society, Master Programme Global Urban Health, Albert-Ludwigs University Freiburg, Freiburg in Breisgau, Germany
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Thongsripong P, Carter BH, Ward MJ, Jameson SB, Michaels SR, Yukich JO, Wesson DM. Aedes aegypti and Aedes albopictus (Diptera: Culicidae) Oviposition Activity and the Associated Socio-environmental Factors in the New Orleans Area. JOURNAL OF MEDICAL ENTOMOLOGY 2023; 60:392-400. [PMID: 36683424 DOI: 10.1093/jme/tjad007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Indexed: 06/17/2023]
Abstract
The transmission of Aedes-borne viruses is on the rise globally. Their mosquito vectors, Aedes aegypti (Linnaeus, Diptera: Culicidae) and Ae. albopictus (Skuse, Diptera: Culicidae), are focally abundant in the Southern United States. Mosquito surveillance is an important component of a mosquito control program. However, there is a lack of long-term surveillance data and an incomplete understanding of the factors influencing vector populations in the Southern United States. Our surveillance program monitored Ae. aegypti and Ae. albopictus oviposition intensity in the New Orleans area using ovicups in a total of 75 sites from 2009 to 2016. We found both Aedes spp. throughout the study period and sites. The average number of Ae. aegypti and Ae. albopictus hatched from collected eggs per site per week was 34.1 (SD = 57.7) and 29.0 (SD = 46.5), respectively. Based on current literature, we formed multiple hypotheses on how environmental variables influence Aedes oviposition intensity, and constructed Generalized Linear Mixed Effect models with a negative binomial distribution and an autocorrelation structure to test these hypotheses. We found significant associations between housing unit density and Ae. aegypti and Ae. albopictus oviposition intensity, and between median household income and Ae. albopictus oviposition intensity. Temperature, relative humidity, and accumulated rainfall had either a lagged or an immediate significant association with oviposition. This study provides the first long-term record of Aedes spp. distribution in the New Orleans area, and sheds light on factors associated with their oviposition activity. This information is vital for the control of potential Aedes-borne virus transmission in this area.
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Affiliation(s)
- Panpim Thongsripong
- Florida Medical Entomology Laboratory, University of Florida, 200 9th Street SE, Vero Beach, FL, USA
| | - Brendan H Carter
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
| | - Matthew J Ward
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
| | - Samuel B Jameson
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
| | - Sarah R Michaels
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
| | - Joshua O Yukich
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
| | - Dawn M Wesson
- Department of Tropical Medicine, Tulane University, 1440 Canal Street, Suite 2301, New Orleans, LA, USA
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Hribar LJ, Boehmler MB, Murray HL, Pruszynski CA, Leal AL. Mosquito Surveillance and Insecticide Resistance Monitoring Conducted by the Florida Keys Mosquito Control District, Monroe County, Florida, USA. INSECTS 2022; 13:927. [PMID: 36292875 PMCID: PMC9603856 DOI: 10.3390/insects13100927] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/04/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Mosquito control programs in the State of Florida are charged with protecting human and animal health, fostering economic development of the State, permitting enjoyment of the natural attractions in Florida, and improving the quality of life of citizens. Mosquito control programs must accomplish these tasks in such a manner as will protect the environment and terrestrial, marine, and freshwater ecosystems. The Florida Keys Mosquito Control District provides a science-based Integrated Pest Management mosquito control program to the residents of the Florida Keys, Monroe County, Florida. Operational decisions are based on surveillance of adult and immature mosquitoes. Mosquito populations are monitored by means of carbon dioxide-baited light traps BG Sentinel traps, truck traps, gravid traps, oviposition traps, and human landing rate counts. Larvae and pupae are monitored by inspections of natural and human-made immature habitats. Due to past and current reliance on chemical pesticides for control of mosquitoes, the District maintains a pesticide resistance detection program consisting of CDC bottle bioassays and larval bioassays, challenging local mosquito species with currently used adulticides and larvicides.
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Affiliation(s)
| | | | - Heidi L. Murray
- Florida Keys Mosquito Control District, Marathon, FL 33030, USA
| | | | - Andrea L. Leal
- Florida Keys Mosquito Control District, Marathon, FL 33030, USA
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Brennan SA, Grob IC, Bartz CE, Baker JK, Jiang Y. Displacement of Aedes albopictus by Aedes aegypti in Gainesville, Florida. JOURNAL OF THE AMERICAN MOSQUITO CONTROL ASSOCIATION 2021; 37:93-97. [PMID: 34184045 DOI: 10.2987/20-6992.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Aedes aegypti and Ae. albopictus are invasive mosquitoes, capable of vectoring arboviruses such as dengue, chikungunya, yellow fever, and Zika. Recent shifts in spatial distribution indicate there is a resurgence of Ae. aegypti in certain regions of Florida. After a 26-year absence, Ae. aegypti larvae were collected in a downtown neighborhood in Gainesville, Florida, in November 2019. Subsequent surveys confirmed that Ae. albopictus was completely displaced by Ae. aegypti in this neighborhood, whereas Ae. albopictus and Ae. aegypti coexisted around this community focus, and Ae. albopictus alone has been found elsewhere in the city and county since the 1990s. Field surveys revealed that Ae. aegypti is resurging in the downtown area of Gainesville and is actively dispersing to adjacent neighborhoods. Thus, Ae. aegypti could potentially replace Ae. albopictus across more of urban Gainesville in north-central Florida, as reported recently in coastal cities of northeastern Florida.
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Affiliation(s)
- Sara A Brennan
- Gainesville Mosquito Control Services405 NW 39th Ave., Gainesville, FL 32609
| | - Ivy C Grob
- Gainesville Mosquito Control Services405 NW 39th Ave., Gainesville, FL 32609
| | - Cason E Bartz
- Gainesville Mosquito Control Services405 NW 39th Ave., Gainesville, FL 32609
| | - Justin K Baker
- Gainesville Mosquito Control Services405 NW 39th Ave., Gainesville, FL 32609
| | - Yongxing Jiang
- Gainesville Mosquito Control Services405 NW 39th Ave., Gainesville, FL 32609
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Hwang MJ, Kim JH, Kim HC, Kim MS, Klein TA, Choi J, Sim K, Chung Y, Joshi YP, Cheong HK. Temporal Trend of Aedes albopictus in Local Urban Parks of the Republic of Korea. JOURNAL OF MEDICAL ENTOMOLOGY 2020; 57:1082-1089. [PMID: 32185384 DOI: 10.1093/jme/tjaa039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Indexed: 06/10/2023]
Abstract
Aedes albopictus (Skuse) was first reported in the Republic of Korea in 1941 (Suwon, Gyeonggi Province). Recently, a mosquito-monitoring program was established in response to the potential development of autochthonous infections of dengue, chikungunya, and Zika viruses, to identify the regional characteristics of Ae. albopictus in Suwon. Daily collections of adult mosquitoes were conducted using Blackhole UV-LED traps and BG-Sentinel traps baited with octenol, carbon dioxide or both at five sites in Suwon (Sungkyunkwan University, Manseok, Seoho, Olympic, and Jungang parks) from 1 July to 1 November 2016. Based on the ecological cycle of mosquitoes, an estimated association between the daily mean temperatures [2 wk prior to the collection date (lag 2 wk)] and relative population abundance were developed using a generalized linear model. The overall proportion of female mosquitoes collected from all traps was 88.3%. Higher female trap indices were observed for mosquitoes collected at BG-Sentinel traps. Additionally, the BG-sentinel trap was more effective collecting Ae. albopictus. Culex pipiens (Coquillett) was the most frequently collected mosquito using UV-LED traps, followed by Ae. vexans nipponii (Theobald), Ochlerotatus koreicus (Edwards), Cx. inatomi (Kamimura and Wada), and members of the Anopheles Hyrcanus Group. Within a certain temperature range, daily mean temperatures 2 wk prior to the collection period was significantly associated with a maximum abundance of Ae. albopictus (P < 0.05) at 26.2°C (95% confidence interval: 24.3-29.4°C). The BG-Sentinel trap is an effective trap for monitoring relative population abundance of Ae. albopictus, and trap catches are significantly correlated with daily mean temperatures.
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Affiliation(s)
- Myung-Jae Hwang
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, Republic of Korea
| | - Jong-Hun Kim
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, Republic of Korea
| | - Heung-Chul Kim
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit, APO AP
| | - Myung Soon Kim
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit, APO AP
| | - Terry A Klein
- Force Health Protection and Preventive Medicine, Medical Department Activity-Korea/65th Medical Brigade, Unit, APO AP
| | - Juhwa Choi
- Incheon Communicable Diseases Center, Namdong-gu, Incheon, Republic of Korea
| | - Kisung Sim
- Department of Mathematical Sciences, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
| | - Yeonseung Chung
- Department of Mathematical Sciences, Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
| | - Yadav Prasad Joshi
- Department of Public Health, Manmohan Memorial Institute of Health Sciences, Kathmandu, Nepal
| | - Hae-Kwan Cheong
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, Republic of Korea
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Richards T, Tucker BJ, Hassan H, Bron GM, Bartholomay L, Paskewitz S. First Detection of Aedes albopictus (Diptera: Culicidae) and Expansion of Aedes japonicus japonicus in Wisconsin, United States. JOURNAL OF MEDICAL ENTOMOLOGY 2019; 56:291-296. [PMID: 30321385 DOI: 10.1093/jme/tjy184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Indexed: 06/08/2023]
Abstract
The 2015-2016 epidemic of Zika virus in the Americas raised concerns about the range of Aedes albopictus (Skuse) in the United States. In response, the University of Wisconsin Medical Entomology Laboratory coordinated with the Wisconsin Department of Health Services in 2016 to conduct Aedes spp. surveillance and set up an oviposition trap (ovitrap) network operated by local public health partners across southern and western Wisconsin. During 2016, 916 ovitrap events were processed, but only Aedes triseriatus Say (Diptera: Culicidae) and Aedes japonicus japonicus (Theobald) were detected. In 2017, a focused surveillance approach was employed to detect Ae. albopictus near sites with tires stored outdoors. Using this targeted approach, Ae. albopictus was detected from ovitraps in two out of seven counties surveyed during June, July, and August. This is the first record of Ae. albopictus in Wisconsin.
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Affiliation(s)
| | | | - Hassan Hassan
- Department of Entomology, University of Wisconsin-Madison
| | | | - Lyric Bartholomay
- Department of Pathobiological Sciences, University of Wisconsin-Madison
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Ng KC, Chaves LF, Tsai KH, Chuang TW. Increased Adult Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Abundance in a Dengue Transmission Hotspot, Compared to a Coldspot, within Kaohsiung City, Taiwan. INSECTS 2018; 9:insects9030098. [PMID: 30104501 PMCID: PMC6164640 DOI: 10.3390/insects9030098] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 07/30/2018] [Accepted: 08/10/2018] [Indexed: 12/30/2022]
Abstract
The assumption that vector abundance differences might drive spatial and temporal heterogeneities in vector-borne disease transmission is common, though data supporting it is scarce. Here, we present data from two common mosquito species Aedes aegypti (Linnaeus) and Culex quinquefasciatus Say, biweekly sampled as adults, from March 2016 through December 2017, with BG-sentinel traps in two neighboring districts of Kaohsiung City (KC), Taiwan. One district has historically been a dengue transmission hotspot (Sanmin), and the other a coldspot (Nanzih). We collected a total 41,027 mosquitoes, and we found that average mosquito abundance (mean ± S.D.) was higher in Sanmin (Ae. aegypti: 9.03 ± 1.46; Cx. quinquefasciatus: 142.57 ± 14.38) than Nanzih (Ae. aegypti: 6.21 ± 0.47; Cx. quinquefasciatus: 63.37 ± 8.71) during the study period. In both districts, Ae. aegypti and Cx. quinquefasciatus population dynamics were sensitive to changes in temperature, the most platykurtic environmental variable at KC during the study period, a pattern predicted by Schmalhausen’s law, which states that organisms are more sensitive to small changes in environmental variables whose average value is more uncertain than its extremes. Our results also suggest that differences in Ae. aegypti abundance might be responsible for spatial differences in dengue transmission at KC. Our comparative approach, where we also observed a significant increment in the abundance of Cx. quinquefasciatus in the dengue transmission hotspot, suggests this area might be more likely to experience outbreaks of other vector borne diseases and should become a primary focus for vector surveillance and control.
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Affiliation(s)
- Ka-Chon Ng
- College of Public Health, National Taiwan University, Taipei 10055, Taiwan.
| | - Luis Fernando Chaves
- Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud (INCIENSA), Apartado Postal 4-2250, Tres Ríos, Cartago, Costa Rica.
- Programa de Investigación en Enfermedades Tropicales (PIET), Escuela de Medicina Veterinaria, Universidad Nacional, Apartado Postal 304-3000, Heredia, Costa Rica.
| | - Kun-Hsien Tsai
- College of Public Health, National Taiwan University, Taipei 10055, Taiwan.
| | - Ting-Wu Chuang
- Department of Molecular Parasitology and Tropical Diseases, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing Street, Xinyi District, Taipei 11031, Taiwan.
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Bara JJ, Parker AT, Muturi EJ. Comparative Susceptibility of Ochlerotatus japonicus, Ochlerotatus triseriatus, Aedes albopictus, and Aedes aegypti (Diptera: Culicidae) to La Crosse Virus. JOURNAL OF MEDICAL ENTOMOLOGY 2016; 53:1415-1421. [PMID: 27605372 DOI: 10.1093/jme/tjw097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 05/19/2016] [Indexed: 06/06/2023]
Abstract
Invasive mosquito species can increase the transmission risk of native mosquito-borne diseases by acting as novel vectors. In this study, we examined the susceptibility of three exotic invasive mosquito species Aedes aegypti (L.), Ae. albopictus (Skuse), and Ochlerotatus japonicus (Theobald) to La Crosse virus (LACV) relative to the native primary vector Ochlerotatus triseriatus (Say). Adult females of the four mosquito species were orally challenged with LACV; incubated for 3, 5, 7, 9, or 11 d; and their midgut infection rates, dissemination rates, and effective vector competence were determined. Overall, Oc. japonicus (2.92) had the highest effective vector competence values, followed by Ae. albopictus (1.55), Ae. aegypti (0.88), and Oc. triseriatus (0.64). In addition, we assessed the relationship between mosquito size and LACV susceptibility for field-collected Oc. triseriatus and Oc. japonicus We hypothesized that smaller adults would be more susceptible to LACV; however, our results did not support this hypothesis. Infected Oc. triseriatus tended to be larger than exposed but uninfected females, while infected and uninfected Oc. japonicus were similarly sized. These findings suggest that Oc. japonicus, Ae. albopictus, and Ae. aegypti have significant potential to transmit LACV and more research is needed to uncover their potential role in LACV epidemiology.
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Affiliation(s)
- Jeffrey J Bara
- Current address: Department of Biology, University of Louisville, Louisville KY 40209
- Illinois Natural History Survey, University of Illinois, Champaign, IL 61820 (; )
| | - Allison T Parker
- Illinois Natural History Survey, University of Illinois, Champaign, IL 61820 (; )
| | - Ephantus J Muturi
- Illinois Natural History Survey, University of Illinois, Champaign, IL 61820 (; )
- Current address: Crop Bioprotection Research Unit, USDA, ARS, 1815 N. University St. Peoria, IL 61604
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Li Y, Su X, Zhou G, Zhang H, Puthiyakunnon S, Shuai S, Cai S, Gu J, Zhou X, Yan G, Chen XG. Comparative evaluation of the efficiency of the BG-Sentinel trap, CDC light trap and Mosquito-oviposition trap for the surveillance of vector mosquitoes. Parasit Vectors 2016; 9:446. [PMID: 27519419 PMCID: PMC4983048 DOI: 10.1186/s13071-016-1724-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 07/25/2016] [Indexed: 11/10/2022] Open
Abstract
Background The surveillance of vector mosquitoes is important for the control of mosquito-borne diseases. To identify a suitable surveillance tool for the adult dengue vector Aedes albopictus, the efficacy of the BG-Sentinel trap, CDC light trap and Mosquito-oviposition trap (MOT) on the capture of vector mosquitoes were comparatively evaluated in this study. Methods The capture efficiencies of the BG-Sentinel trap, CDC light trap and Mosquito-oviposition trap for common vector mosquitoes were tested in a laboratory setting, through the release-recapture method, and at two field sites of Guangzhou, China from June 2013 to May 2014. The captured mosquitoes were counted, species identified and compared among the three traps on the basis of species. Results In the release-recapture experiments in a laboratory setting, the BG-Sentinel trap caught significantly more Aedes albopictus and Culex quinquefasciatus than the CDC light trap and Mosquito-ovitrap, except for Anopheles sinensis. The BG-Sentinel trap had a higher efficacy in capturing female rather than male Ae. albopictus and Cx. quinquefasciatus, but the capture in CDC light traps displayed no significant differences. In the field trial, BG-Sentinel traps collected more Aedes albopictus than CDC light traps and MOTs collected in both urban and suburban areas. The BG-Sentinel trap was more sensitive for monitoring the population density of Aedes albopictus than the CDC light trap and MOT during the peak months of the year 2013. However, on an average, CDC light traps captured significantly more Cx. quinquefasciatus than BG-Sentinel traps. The population dynamics of Cx. quinquefasciatus displayed a significant seasonal variation, with the lowest numbers in the middle of the year. Conclusions This study indicates that the BG-Sentinel trap is more effective than the commonly used CDC light trap and MOT in sampling adult Aedes albopictus and Culex quinquefasciatus. We recommend its use in the surveillance of dengue vector mosquitoes in China. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1724-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yiji Li
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Xinghua Su
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Guofa Zhou
- Program in Public Health, School of Medicine, University of California, Irvine, USA
| | - Hong Zhang
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Santhosh Puthiyakunnon
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Shufen Shuai
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Songwu Cai
- Department of Vector Control, Centers for Disease Control and Prevention of Guangdong Province, Guangzhou, China
| | - Jinbao Gu
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Xiaohong Zhou
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China
| | - Guiyun Yan
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China.,Program in Public Health, School of Medicine, University of California, Irvine, USA
| | - Xiao-Guang Chen
- Key Laboratory of Prevention and Control for Emerging Infectious Diseases of Guangdong Higher Institutes, Department of Pathogen Biology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou North Avenue No.1838, Guangzhou, 510515, China.
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Cornel AJ, Holeman J, Nieman CC, Lee Y, Smith C, Amorino M, Brisco KK, Barrera R, Lanzaro GC, Mulligan Iii FS. Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California. F1000Res 2016; 5:194. [PMID: 27158450 DOI: 10.12688/f1000research.8107.1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/17/2016] [Indexed: 11/20/2022] Open
Abstract
The invasion and subsequent establishment in California of Aedes aegypti in 2013 has created new challenges for local mosquito abatement and vector control districts. Studies were undertaken to identify effective and economical strategies to monitor the abundance and spread of this mosquito species as well as for its control. Overall, BG Sentinel (BGS) traps were found to be the most sensitive trap type to measure abundance and spread into new locations. Autocidal-Gravid-Ovitraps (AGO-B), when placed at a site for a week, performed equally to BGS in detecting the presence of female Ae. aegypti. Considering operational cost and our findings, we recommend use of BGS traps for surveillance in response to service requests especially in locations outside the known infestation area. We recommend AGO-Bs be placed at fixed sites, cleared and processed once a week to monitor mosquito abundance within a known infestation area. Long-term high density placements of AGO-Bs were found to show promise as an environmentally friendly trap-kill control strategy. California Ae. aegypti were found to be homozygous for the V1016I mutation in the voltage gated sodium channel gene, which is implicated to be involved in insecticide resistance. This strain originating from Clovis, California was resistant to some pyrethroids but not to deltamethrin in bottle bio-assays. Sentinel cage ultra-low-volume (ULV) trials using a new formulation of deltamethrin (DeltaGard®) demonstrated that it provided some control (average of 56% death in sentinel cages in a 91.4 m spray swath) after a single truck mounted aerial ULV application in residential areas.
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Affiliation(s)
- Anthony J Cornel
- Mosquito Control Research Laboratory, Kearney Agricultural Center, Department of Entomology and Nematology, UC Davis, Parlier, CA, USA
| | - Jodi Holeman
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Catelyn C Nieman
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
| | - Yoosook Lee
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
| | - Charles Smith
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Mark Amorino
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Katherine K Brisco
- Mosquito Control Research Laboratory, Kearney Agricultural Center, Department of Entomology and Nematology, UC Davis, Parlier, CA, USA
| | - Roberto Barrera
- Entomology and Ecology Actvity7, Dengue Branch, Centers for Disease Control and Prevention, San Juan, Puerto Rico
| | - Gregory C Lanzaro
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
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Cornel AJ, Holeman J, Nieman CC, Lee Y, Smith C, Amorino M, Brisco KK, Barrera R, Lanzaro GC, Mulligan Iii FS. Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California. F1000Res 2016; 5:194. [PMID: 27158450 PMCID: PMC4857756 DOI: 10.12688/f1000research.8107.3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/01/2016] [Indexed: 11/20/2022] Open
Abstract
The invasion and subsequent establishment in California of
Aedes aegypti in 2013 has created new challenges for local mosquito abatement and vector control districts. Studies were undertaken to identify effective and economical strategies to monitor the abundance and spread of this mosquito species as well as for its control. Overall, BG Sentinel (BGS) traps were found to be the most sensitive trap type to measure abundance and spread into new locations. Autocidal-Gravid-Ovitraps (AGO-B), when placed at a site for a week, performed equally to BGS in detecting the presence of female
Ae. aegypti. Considering operational cost and our findings, we recommend use of BGS traps for surveillance in response to service requests especially in locations outside the known infestation area. We recommend AGO-Bs be placed at fixed sites, cleared and processed once a week to monitor mosquito abundance within a known infestation area. Long-term high density placements of AGO-Bs were found to show promise as an environmentally friendly trap-kill control strategy. California
Ae. aegypti were found to be homozygous for the V1016I mutation in the voltage gated sodium channel gene, which is implicated to be involved in insecticide resistance. This strain originating from Clovis, California was resistant to some pyrethroids but not to deltamethrin in bottle bio-assays. Sentinel cage ultra-low-volume (ULV) trials using a new formulation of deltamethrin (DeltaGard®) demonstrated that it provided some control (average of 56% death in sentinel cages in a 91.4 m spray swath) after a single truck mounted aerial ULV application in residential areas.
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Affiliation(s)
- Anthony J Cornel
- Mosquito Control Research Laboratory, Kearney Agricultural Center, Department of Entomology and Nematology, UC Davis, Parlier, CA, USA
| | - Jodi Holeman
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Catelyn C Nieman
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
| | - Yoosook Lee
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
| | - Charles Smith
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Mark Amorino
- Consolidated Mosquito Abatement District, Selma, CA, USA
| | - Katherine K Brisco
- Mosquito Control Research Laboratory, Kearney Agricultural Center, Department of Entomology and Nematology, UC Davis, Parlier, CA, USA
| | - Roberto Barrera
- Entomology and Ecology Actvity7, Dengue Branch, Centers for Disease Control and Prevention, San Juan, Puerto Rico
| | - Gregory C Lanzaro
- Vector Genetics Laboratory, School of Veterinary Medicine, UC Davis, Davis, CA, USA
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