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Behavioral changes of some arboviral vectors in Zika Forest: A concern for emerging and re-emerging diseases in Uganda

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Title Behavioral changes of some arboviral vectors in Zika Forest: A concern for emerging and re-emerging diseases in Uganda
 
Creator Lukindu, M.
Mukwaya, L.G.
Masembe, C.
Birungi, Josephine
 
Subject zoonoses
animal diseases
vectors
 
Description Background: The increasing reports on emerging/re-emerging arboviral disease outbreaks or epidemics in Sub-Saharan Africa have been impacted by factors, including the changing climate plus human activities that have resulted in land cover changes. These factors influence the prevalence, incidence, behavior, and distribution of vectors and vector-borne diseases. In this study, we assessed the potential effect of land cover changes on the distribution and oviposition behavior of some arboviral vectors in Zika forest, Uganda, which has decreased by an estimated 7 hectares since 1952 due to an increase in anthropogenic activities in the forest and its periphery.

Materials and Methods: Immature mosquitoes were collected using bamboo pots and placed at various levels of a steel tower in the forest and at different intervals from the forest periphery to areas among human dwellings. Collections were conducted for 20 months.

Results and Conclusion: Inside the forest, 22,280 mosquitoes were collected belonging to four arboviral vectors: Aedes aegypti, Aedes africanus, Aedes apicoargenteus, and Aedes cumminsii. When compared with similar studies conducted in the forest in 1964, there was a change from a sylvatic to a tendency of peridomestic behavior in A. africanus, which was now collected among human dwellings. There was an unexpected change in the distribution of A. aegypti, which was not only collected outside the forest as in previous reports but also collected in the forest. Conversely, A. cumminsii originally collected in the forest expanded its ranges with collections outside the forest in this study. Aedes simpsoni maintained its distribution range outside the forest among agricultural sites. We suspect that land cover changes were favorable to most of the arboviral vectors hence enhancing their proliferation and habitat range. This potentially increases the transmission of arboviral diseases in the area, hence impacting the epidemiology of emerging/remerging diseases in Uganda.
 
Date 2023
2023-09-18T08:00:08Z
2023-09-18T08:00:08Z
 
Type Journal Article
 
Identifier Lukindu, M., Mukwaya, L.G., Masembe, C. and Birungi, J. 2023. Behavioral changes of some arboviral vectors in Zika Forest: A concern for emerging and re-emerging diseases in Uganda. Vector-Borne and Zoonotic Diseases
1557-7759
https://hdl.handle.net/10568/131878
https://doi.org/10.1089/vbz.2023.0026
 
Language en
 
Rights Other
Limited Access
 
Source Vector-Borne and Zoonotic Diseases