Potential persistence mechanisms of the major Anopheles gambiae species complex malaria vectors in sub-Saharan Africa: a narrative review.

Autor: Mwima R; Department of Entomology, Uganda Virus Research Institute (UVRI), Entebbe, Uganda.; Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, Kampala, Uganda., Hui TJ; Silwood Park Campus, Department of Life Sciences, Imperial College London, Ascot, UK., Nanteza A; Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine, Animal Resources and Biosecurity (COVAB), Makerere University, Kampala, Uganda., Burt A; Silwood Park Campus, Department of Life Sciences, Imperial College London, Ascot, UK., Kayondo JK; Department of Entomology, Uganda Virus Research Institute (UVRI), Entebbe, Uganda. jkayondo@gmail.com.
Jazyk: angličtina
Zdroj: Malaria journal [Malar J] 2023 Nov 07; Vol. 22 (1), pp. 336. Date of Electronic Publication: 2023 Nov 07.
DOI: 10.1186/s12936-023-04775-0
Abstrakt: The source of malaria vector populations that re-establish at the beginning of the rainy season is still unclear yet knowledge of mosquito behaviour is required to effectively institute control measures. Alternative hypotheses like aestivation, local refugia, migration between neighbouring sites, and long-distance migration (LDM) are stipulated to support mosquito persistence. This work assessed the malaria vector persistence dynamics and examined various studies done on vector survival  via these hypotheses; aestivation, local refugia, local or long-distance migration across sub-Saharan Africa, explored a range of methods used, ecological parameters and highlighted the knowledge trends and gaps. The results about a particular persistence mechanism that supports the re-establishment of Anopheles gambiae, Anopheles coluzzii or Anopheles arabiensis in sub-Saharan Africa were not conclusive given that each method used had its limitations. For example, the Mark-Release-Recapture (MRR) method whose challenge is a low recapture rate that affects its accuracy, and the use of time series analysis through field collections whose challenge is the uncertainty about whether not finding mosquitoes during the dry season is a weakness of the conventional sampling methods used or because of hidden shelters. This, therefore, calls for further investigations emphasizing the use of ecological experiments under controlled conditions in the laboratory or semi-field, and genetic approaches, as they are known to complement each other. This review, therefore, unveils and assesses the uncertainties that influence the different malaria vector persistence mechanisms and provides recommendations for future studies.
(© 2023. The Author(s).)
Databáze: MEDLINE
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