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256 results for “Aedes aegypti”
Literature based occurrence locations of Aedes aegypti and Aedes albopictus in India since 2015
<p>India has witnessed a five-fold increase in dengue incidence in the past decade. However, the nation-wide distribution of dengue vectors, and the impacts of climate change are not known. Species distribution models are a novel approach for determining the distribution of species based on biologically relevant environmental factors, and relies on known presence and absence locations of the species. The Global Biodiversity Information Facility (GBIF) contains 562 records of Aedes aegypti occurrence and 207 records of Aedes albopictus occurrence in India, most of which are derived from a large scale study that compiled the global geographic database of Aedes aegypti and Aedes albopictus locations up to 2014, based on peer reviewed literature, national entomological surveys and expert networks. However, there was a need to update the occurrence locations after 2014. To overcome this knowledge gap, we compiled data on the occurrences of Aedes aegypti and Aedes albopictus in India, based on published literature after 2014 that carried out entomological surveys in India. This dataset was combined with data from GBIF to map the present and future distributions of Aedes aegypti and Aedes albopictus in India based on different scenarios for climate change.</p>
Data from: Wolbachia infection alters the relative abundance of resident bacteria in adult Aedes aegypti mosquitoes, but not larvae
Insect-symbiont interactions are known to play key roles in host functions and fitness. The common insect endosymbiont Wolbachia can reduce the ability of several human pathogens, including arboviruses and the malaria parasite, to replicate in insect hosts. Wolbachia does not naturally infect Aedes aegypti, the primary vector of dengue virus, but transinfected Ae. aegypti have anti-dengue virus properties and are currently being trialled as a dengue biocontrol strategy. Here, we assess the impact of Wolbachia infection of Ae. aegypti on the microbiome of wild mosquito populations (adults and larvae) collected from release sites in Cairns, Australia, by profiling 16S rRNA gene using next generation sequencing. Our data indicate that Wolbachia reduces the relative abundance of a large proportion of bacterial taxa in Ae. aegypti adults, that is in accordance with the known pathogen-blocking effects of Wolbachia on a variety of bacteria and viruses. In adults, several of the most abundant bacterial genera were found to undergo significant shifts in relative abundance. However, the genera showing the greatest changes in relative abundance in Wolbachia-infected adults represented a low proportion of the total microbiome. In addition, there was little effect of Wolbachia infection on the relative abundance of bacterial taxa in larvae, or on species diversity (accounting for species richness and evenness together) detected in adults or larvae. These results offer insight into the effects of Wolbachia on the Ae. aegypti microbiome in a native setting, an important consideration for field releases of Wolbachia into the population.
single-nucleus RNAseq data from female Aedes aegypti antenna
<p>Single-nucleus RNA sequencing data accompanying Herre*, Goldman* et al. (2022), "Non-Canonical Odor Coding in the Mosquito" (https://doi.org/10.1016/j.cell.2022.07.024)</p> <p>For further analysis see: https://github.com/VosshallLab/Younger_Herre_Vosshall2020/tree/main/snRNAseq_SupplementaryData</p> <p>For raw sequencing files see NCBI BioProject: PRJNA794050</p>
Data from: A comprehensive assessment of inbreeding and laboratory adaptation in Aedes aegypti mosquitoes
Modified Aedes aegypti mosquitoes reared in laboratories are being released around the world to control wild mosquito populations and the diseases they transmit. Several efforts have failed due to poor competitiveness of the released mosquitoes. We hypothesized that colonized mosquito populations could suffer from inbreeding depression and adapt to laboratory conditions, reducing their performance in the field. We established replicate populations of Ae. aegypti mosquitoes collected from Queensland, Australia, and maintained them in the laboratory for twelve generations at different census sizes. Mosquito colonies maintained at small census sizes (≤100 individuals) suffered from inbreeding depression due to low effective population sizes which were only 25% of the census size as estimated by SNP markers. Populations that underwent full-sib mating for 9 consecutive generations had greatly reduced performance across all traits measured. We compared the established laboratory populations with their ancestral population resurrected from quiescent eggs for evidence of laboratory adaptation. The overall performance of laboratory populations maintained at a large census size (400 individuals) increased, potentially reflecting adaptation to artificial rearing conditions. However most individual traits were unaffected, and patterns of adaptation were not consistent across populations. Differences between replicate populations may indicate that founder effects and drift affect experimental outcomes. Though we find limited evidence of laboratory adaptation, mosquitoes maintained at low population sizes can clearly suffer fitness costs, compromising the success of "rear and release" strategies for arbovirus control.
Data from: Effect of infection and gonotrophic cycle on Aedes aegypti behavior and preferences
<p><span>Targeting gravid females through chemical lures is a promising strategy in vector control; however, it requires the understanding of the factors susceptible to alter female oviposition behaviour. Here, we evaluated the effect of infection with chikungunya virus (CHIKV) and the number of gonotrophic cycles (GCs) on oviposition activity in <em>Ae. aegypti</em>. Dual choice oviposition assays were performed, where dodecanoic acid, pentadecanoic acid, n-heneicosane and a Sargasssum fluitans (Børgesen) Børgesen extract were tested in uninfected females and females infected with CHIKV, at the 1<sup>st</sup> and 2<sup>nd</sup> GC. Infected females displayed a lower percentage of oviposition and a higher number of eggs laid at the 1<sup>st</sup> GC. Then, combined effects of GC and CHIKV induced the preference towards the tested candidates to either increase or decrease with a chemical-dependent effect. These results allow a deeper understanding of the mechanisms involved in oviposition site selection and highlight the need for taking into account physiological stage changes to increase the control programs efficacy.</span></p>
A Cluster-randomized Trial to EValuate the Efficacy of Wolbachia-InfecTed Aedes Aegypti Mosquitoes in Reducing the Incidence of Arboviral Infection in Brazil (EVITA Dengue)
ClinicalTrials.gov study NCT04514107. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Preliminary studies on the effects of Taiwanese ritual smoke on Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae)
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Data from: Wolbachia infection alters the relative abundance of resident bacteria in adult Aedes aegypti mosquitoes, but not larvae
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Data from: Effective population sizes of a major vector of human diseases, Aedes aegypti
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Data from: Parental and offspring larval diets interact to influence life history traits and dengue virus infection of offspring in Aedes aegypti
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Data from: Selection on Aedes aegypti alters Wolbachia-mediated dengue virus blocking and fitness
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Literature based occurrence locations of Aedes aegypti and Aedes albopictus in India since 2015
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Data from: The effect of virus-blocking Wolbachia on male competitiveness of the dengue vector mosquito, Aedes aegypti
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Data from: A comprehensive assessment of inbreeding and laboratory adaptation in Aedes aegypti mosquitoes
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Sex, age, and acoustic mating interactions affect the immunity of Aedes aegypti offspring
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Larvicidal activity of Artemsia capillaris and Setaria palmifolia and Macaranga tanarius extracts against Aedes aegypti (Culicidae)
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Re-emergence of Aedes aegypti (Linnaeus) in Egypt under climate changes
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Data from: Transgenic Aedes aegypti mosquitoes transfer genes into a natural population
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Data from: Restoration of pyrethroid susceptibility in a highly resistant Aedes aegypti population
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Data from: Effect of infection and gonotrophic cycle on Aedes aegypti behavior and preferences
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