Pdf Signatures Of Aestivation And Migration In Sahelian Malaria Mosquito

pdf signatures of aestivation and migration in sahelian malaria mosquito

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Recent results of high-altitude windborne mosquito migration raised questions about the viability of these mosquitoes despite ample evidence that many insect species, including other dipterans, have been known to migrate regularly over tens or hundreds of kilometers on high-altitude winds and retain their viability. To address these concerns, we subjected wild Anopheles gambiae s. Giles mosquitoes to a high-altitude survival assay, followed by oviposition egg laying and blood feeding assays. Despite carrying out the survival assay under exceptionally harsh conditions that probably provide the lowest survival potential following high altitude flight, a high proportion of the mosquitoes survived for 6- and even h assay durations at to m altitudes.

Aestivation of the African Malaria Mosquito, Anopheles gambiae in the Sahel

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Metrics details. How anopheline mosquitoes persist through the long dry season in Africa remains a gap in our understanding of these malaria vectors. To span this period in locations such as the Sahelian zone of Mali, mosquitoes must either migrate to areas of permanent water, recolonize areas as they again become favorable, or survive in harsh conditions including high temperatures, low humidity, and an absence of surface water required for breeding. Previous work has found evidence that the malaria mosquito An. The inability to recapitulate aestivation in the lab hinders addressing key questions such as how this state is induced, how it affects malaria vector competence, and its impact on disease transmission.

Data correspond to usage on the plateform after The current usage metrics is available hours after online publication and is updated daily on week days. Open Access. Issue Med Sci Paris. Dry season biology of Anopheles gambiae giles in the Sudan. Nature ; : —

Signatures of aestivation and migration in Sahelian malaria mosquito populations

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. During the long Sahelian dry season, mosquito vectors of malaria are expected to perish when no larval sites are available; yet, days after the first rains, mosquitoes reappear in large numbers. How these vectors persist over the 3—6-month long dry season has not been resolved, despite extensive research for over a century 1 , 2 , 3.


During the long Sahelian dry season, mosquito vectors of malaria are expected to perish when no larval sites are available; yet, days after the first rains.


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Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Lehmann and A. Dao and A.

Arcaz, D. Huestis, A. Dao, A.

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During the long Sahelian dry season, mosquito vectors of malaria are expected to perish when no larval sites are available; yet, days after the first rains, mosquitoes reappear in large numbers. coluzzii followed the first rains closely, consistent with aestivation, whereas the growth phase of both A.

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