Videographic analysis of flight behaviours of host-seeking Anopheles arabiensis towards BG-Malaria trap

Batista, E. P.A., Mapua, S. A., Ngowo, H. , Matowo, N. S., Melo, E. F., Paixão, K. S., Eiras, A. E. and Okumu, F. O. (2019) Videographic analysis of flight behaviours of host-seeking Anopheles arabiensis towards BG-Malaria trap. PLoS ONE, 14(7), e0220563. (doi: 10.1371/journal.pone.0220563) (PMID:31365584) (PMCID:PMC6668822)

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Abstract

The BG-Malaria trap (BGM) is an adaptation of the well-known BG-Sentinel trap (BGS) with greater trapping efficiencies for anopheline and culicine mosquitoes. Its continued optimization requires greater understanding of mosquito flight behaviors near it. We used three high-resolution infrared cameras (68 frames/second) to track flight behaviors of laboratory-reared Anopheles arabiensis females in vicinity of the BGM in comparison with BGS. Additional comparisons were done for BGM at 20, 40 and 80cm heights, and for BGMs baited with Ifakara blend plus CO2, CO2 alone, or no bait. More mosquitoes were observed near BGM than BGS. Both BGMs installed 20cm above the floor and baited with CO2 received more visits by host-seeking mosquitoes than the other BGMs evaluated in their respective experiments. Trap designs, height and attractants all influence mosquito activity in vicinity of the traps which can be readily visualized using infrared cameras to accelerate trap development and testing. The greater activity of host-seeking mosquitoes near BGM than BGS supports the proven superiority of BGM traps in field and semi-field settings.

Item Type:Articles
Additional Information:Funding: This work was funded by Wellcome Trust Intermediate Fellowship in Public Health and Tropical Medicine grant awarded to FOO (Grant Number: WT102350/Z/13). EPAB was funded by the Coordenac¸ão de Aperfeic¸oamento de Pessoal de Nı´vel Superior (CAPES) (Grant 88881.133584/ 2016-01). SAM was funded by Wellcome Trust Master’s Fellowship in Public Health and Tropical Medicine (Grant Number: 212633/Z/18/Z). AEE was funded by the Conselho Nacional de Desenvolvimento Cientı´fico e Tecnolo´gico of the Ministe´rio da Ciência, Tecnologia e Inovac¸ão (CNPq/MCTI) (Grant 310205/2014-0) and Fundac¸ão de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG) (Grant PPM-00502-15).
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ngowo, Halfan and Okumu, Dr Fredros
Creator Roles:
Okumu, F.Conceptualization, Funding acquisition, Writing – review and editing
Ngowo, H.Formal analysis, Writing – review and editing
Authors: Batista, E. P.A., Mapua, S. A., Ngowo, H., Matowo, N. S., Melo, E. F., Paixão, K. S., Eiras, A. E., and Okumu, F. O.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:PLoS ONE
Publisher:Public Library of Science
ISSN:1932-6203
ISSN (Online):1932-6203
Published Online:31 July 2019
Copyright Holders:Copyright © 2019 Batista et al.
First Published:First published in PLoS ONE 14(7):e0220563
Publisher Policy:Reproduced under a Creative Commons license

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