Wing morphometric variability in Aedes aegypti (Diptera: Culicidae) from different urban built environments
Parasites and Vectors, ISSN: 1756-3305, Vol: 11, Issue: 1, Page: 561
2018
- 28Citations
- 105Captures
- 5Mentions
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Metrics Details
- Citations28
- Citation Indexes28
- 28
- CrossRef25
- Captures105
- Readers105
- 105
- Mentions5
- News Mentions5
- News5
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Article Description
Background: Aedes aegypti is the main vector of the dengue, Zika and several other arboviruses. It is highly adapted to urbanized environments and can be found worldwide. Mosquito population control is considered the best strategy for fighting mosquito-borne diseases, making an understanding of their population dynamics vital for the development of more effective vector control programs. This study therefore sought to investigate how different levels of urbanization affect Aedes aegypti populations and modulate population structure in this species with the aid of wing geometric morphometrics. Methods: Specimens were collected from eleven locations in three areas with distinct levels of urbanization in the city of São Paulo, Brazil: conserved, intermediate and urbanized. The right wings of female mosquitoes collected were removed, and photographed and digitized. Canonical variate analysis and Mahalanobis distance were used to investigate the degree of wing-shape dissimilarity among populations. Thin-plate splines were calculated by regression analysis of Canonical Variation Analysis scores against wing-shape variation, and a cross-validated reclassification was performed for each individual; a neighbor-joining tree was then constructed. Results: Metapopulation and individual population analysis showed a clear segregation pattern in the Canonical Variation Analysis. Pairwise cross-validated reclassification yielded relatively high scores considering the microgeographical scale of the study and the fact that the study populations belong to the same species. The neighbor-joining tree showed that mosquitoes in the intermediate urban area segregated in the metapopulation and individual population analyses. Our findings show significant population structuring in Aedes aegypti mosquitoes in the areas studied. This is related to the different degrees of urbanization in the areas where the specimens were collected along with their geographical location. Conclusions: Urbanization processes in the study areas appear to play an important role in microevolutionary processes triggered by man-made modifications in the environment, resulting in a previously unknown population structuring pattern of major epidemiological importance.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85055612243&origin=inward; http://dx.doi.org/10.1186/s13071-018-3154-4; http://www.ncbi.nlm.nih.gov/pubmed/30367678; https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-018-3154-4; https://dx.doi.org/10.1186/s13071-018-3154-4
Springer Science and Business Media LLC
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