Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California

Cornel, Anthony J.; Holeman, Jodi; Nieman, Catelyn C.; Y, Lee; Smith, Charles Kent; Amorino, Mark; Brisco, Katherine K.; Barrera, Roberto; Lanzaro, Gregory C.; Mulligan, F. S.

doi:10.12688/f1000research.8107.1

Cited by 36 publications

(8 citation statements)

References 33 publications

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“…In Asia, V1016G has been found with S989P in Thailand and Malaysia, V1016G and F1534C in Singapore, S989P, V1016G and F1534C in China, Thailand, Myanmar, Saudi Arabia and Indonesia, and T1520I with F1534C in India . In the Americas, the co‐occurrence of V1016I and F1534C has been found in the Caribbean Islands, Mexico, Brazil, Venezuela and the USA; in Africa, the co‐occurrence of V1016I and F1534C in Ghana has been reported …”

Section: Discussionmentioning

confidence: 99%

Co‐occurrence of V1016I and F1534C mutations in the voltage‐gated sodium channel and resistance to pyrethroids in Aedes aegypti (L.) from the Colombian Caribbean region

Maestre‐Serrano

Pareja-Loaiza

Camargo

et al. 2019

Pest Management Science

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BACKGROUND Knockdown resistance is conferred primarily by non‐synonymous mutations that reduce pyrethroids binding to voltage‐gated sodium channels. In 2014, kdr mutation V1016I in Aedes aegypti populations resistant to pyrethroids was reported for the first time in Colombiα, in 2016 another kdr mutation, F1534C, and in 2018 the mutation V419L. Nine populations of A. aegypti, previously characterized as being resistant to λ‐cyhalothrin, deltamethrin, cyfluthrin and permethrin, were used for this study. Genomic DNA was used to determine genotypes by allele‐specific PCR for mutations V1016I and F1534C, and to determine their association with pyrethroid resistance. RESULTS All the populations analyzed showed both mutations, with allelic frequencies of 0.07–0.35 for I1016 and 0.47–0.88 for C1534. A percentage of co‐occurrence of mutant homozygotes I1016/C1534 of 5.3% was detected. A significant positive correlation was found between the frequency of the genotype I1016 and the resistance to permethrin, λ‐cyhalothrin and cyfluthrin, but not to deltamethrin; on the other hand, the correlation was not significant for the C1534 genotype and the four pyrethroids evaluated. No significant correlation was found between the frequencies of the mutations V1016I and F1534C. CONCLUSIONS Both mutations V1016I and F1534C are present in A. aegypti populations of the Colombian Caribbean, and although the frequency of F1534C exceeds V1016I, the latter was correlated to resistance to pyrethroid insecticides. © 2018 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 99%

Co‐occurrence of V1016I and F1534C mutations in the voltage‐gated sodium channel and resistance to pyrethroids in Aedes aegypti (L.) from the Colombian Caribbean region

Maestre‐Serrano

Pareja-Loaiza

Camargo

et al. 2019

Pest Management Science

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“…This may be because many Aedes are predominantly day-biting and, at least in some cases, also have shorter periods of seasonal abundance. For Aedes collections it is therefore probably better to do larval collections from container habitats, supplemented with day-operated odour-baited BG traps or similar devices [ 93 ]. We also find a simple Community Composition Measure (CCM) which combines numbers of mosquitoes captured, number of species, and number of genera, a far more useful indicator of mosquito community status and structure at a particular sampling site than the Shannon’s index, although the two measures do complement each other and together provide a more informed assessment.…”

Section: Discussionmentioning

confidence: 99%

Mosquito community composition in South Africa and some neighboring countries

Cornel

Almeida

et al. 2018

Parasites Vectors

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BackgroundA century of studies have described particular aspects of relatively few mosquito species in southern Africa, mostly those species involved with disease transmission, specifically malaria and arboviruses. Patterns of community composition such as mosquito abundance and species diversity are often useful measures for medical entomologists to guide broader insights and projections regarding disease dynamics and potential introduction, spread or maintenance of globally spreading pathogens. However, little research has addressed these indicators in southern Africa.ResultsWe collected 7882 mosquitoes from net and light traps at 11 localities comprising 66 species in 8 genera. We collected an additional 8 species using supplementary collection techniques such as larval sampling, sweep-netting and indoor pyrethrum knockdown catches. Highest diversity and species richness was found in the Okavango Delta of Botswana and in South Africa’s Kruger National Park, while the lowest diversity and abundances were in the extreme southern tip of South Africa and in semi-desert Kalahari close to the South Africa border with Botswana. Species composition was more similar between proximal localities than distant ones (Linear model P-value = 0.005). Multiple arbovirus vector species were detected in all localities we surveyed (proportion of vector mosquito numbers were > 0.5 in all locations except Shingwedzi). Their proportions were highest (> 90%) in Vilankulo and Kogelberg.ConclusionsMultiple known arbovirus vector species were found in all study sites, whereas anopheline human malaria vector species in only some sites. The combination of net traps and light traps effectively sampled mosquito species attracted to carbon-dioxide or light, accounting for 89% of the 74 species collected. The 11% remaining species were collected using supplementary collection techniques mentioned above. The diversity of species weas highest in savanna type habitats, whereas low diversities were found in the drier Kalahari sands regions and the southern Cape fynbos regions.Electronic supplementary materialThe online version of this article (10.1186/s13071-018-2824-6) contains supplementary material, which is available to authorized users.

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“…aegypti in California [6]. Since rainfall in the Central Valley of California is restricted to cold months of the year when temperatures are unsuitable for larval development, larval habitats are reliant on water from residential watering [25]. However, similar to northern Australia, larval habitats for Ae.…”

Section: Introductionmentioning

confidence: 99%

Environmental influences on Aedes aegypti catches in Biogents Sentinel traps during a Californian “rear and release” program: Implications for designing surveillance programs

et al. 2020

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As Aedes aegypti continues to expand its global distribution, the diseases it vectors (dengue, Zika, chikungunya and yellow fever) are of increasing concern. Modern efforts to control this species include "rear and release" strategies where lab-reared mosquitoes are distributed throughout the landscape to replace or suppress invasive populations. These programs require intensive surveillance efforts to monitor their success, and the Biogents Sentinel (BGS) trap is one of the most effective tools for sampling adult Ae. aegypti. BGS trap catches can be highly variable throughout landscapes, so we investigated the potential impacts of environmental factors on adult Ae. aegypti capture rates during a "rear and release" program in California to better understand the relative contributions of true variability in population density across a landscape and trap context. We recorded male and female Ae. aegypti catches from BGS traps, with and without CO 2 , throughout control sites where no mosquitoes were released and in treatment sites where males infected with Wolbachia were released. BGS trap catches were positively influenced by higher proportions of shade or bushes in the front yard of the premises as well as the presence of potential larval habitats such as subterranean vaults. In contrast, an increase in residential habitat within a 100 m radius of trap locations negatively influenced BGS trap catches. For male Ae. aegypti, increased visual complexity of the trap location positively influenced capture rates, and the presence of yard drains negatively affected catch rates in control sites. Lastly, for BGS traps using CO 2 , higher catch rates were noted from traps placed greater than one meter from walls or fences for both male and female mosquitoes. These results have important implications for surveillance programs of Ae. aegypti throughout the Californian urban environment including adult monitoring during "rear and release" programs.

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Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California

Cited by 36 publications

References 33 publications

Co‐occurrence of V1016I and F1534C mutations in the voltage‐gated sodium channel and resistance to pyrethroids in Aedes aegypti (L.) from the Colombian Caribbean region

Co‐occurrence of V1016I and F1534C mutations in the voltage‐gated sodium channel and resistance to pyrethroids in Aedes aegypti (L.) from the Colombian Caribbean region

Mosquito community composition in South Africa and some neighboring countries

Environmental influences on Aedes aegypti catches in Biogents Sentinel traps during a Californian “rear and release” program: Implications for designing surveillance programs

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