An update on the mosquito species composition and diversity in western and North Western Uganda

Mayanja, M. N., Mwiine, F. N., Kohl, A. , Thomson, E. C. and Lutwama, J. J. (2020) An update on the mosquito species composition and diversity in western and North Western Uganda. Journal of Entomology and Zoology Studies, 8(2), pp. 1074-1086.

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Although the west and north western parts of Uganda are historically known homes to a number of mosquito species and arboviruses associated with morbidity and mortality, early studies were highly focal and limited to specific collection methods. We aimed to update mosquito species composition in areas where a febrile illness study had shown evidence of arboviruses circulating. Adult mosquito sampling was done outside and inside houses using light traps baited with solid carbon dioxide and pyrethrum spray respectively. All collected mosquitoes were identified using appropriate morphological identification keys. A total of 22,455 mosquitoes from 89 species, 22 sub species and 11 genera were collected from Arua and Kasese districts. Overall abundance was found to be higher in Kasese (n=13446, 59.9%) than Arua district (n = 9009, 40.1%), though no significant differences were observed across villages in Arua and Kasese districts (Kruskal Wallis, X2 = 2, df = 3, p>0.05). Collection numbers were highest for genus Coquillettidia (n = 7942, 35.4%), followed by Culex (n = 7642, 34.03%), Mansonia (n = 3414, 15.2%), Anopheles (n = 1970, 8.8%) and Aedes (n = 1349, 6.01%). Other species were across 6 genera Eretmopodites (n = 59, 0.26%), Uranoteania (n = 36, 0.16%), Lutzia (n = 26, 0.12%), Mimomyia (n = 13, 0.06%), Aediomyia (n = 3, 0.01%) and Toxorhynchites (n = 1, 0.004%) appeared low in both districts. Species richness was comparatively higher in Kasese than Arua district, however across villages, it was evenly distributed with no significant differences observed, and species diversity was significantly higher in Arua than Kasese (Mann Whitney U test, p<0.05). A number of species identified here have been implied in arbovirus transmission. Moreover, we show the first description of Culex (Culex) litwakae Harbach mosquito in Uganda, a species previously described in the coastal regions of Kenya. The existence of a mosquito species previously not documented in Uganda suggests a likelihood of many invasive species whose potential to transmit viruses to humans and animals remains largely unknown.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Mayanja, Mr Martin and Thomson, Professor Emma and Kohl, Professor Alain
Authors: Mayanja, M. N., Mwiine, F. N., Kohl, A., Thomson, E. C., and Lutwama, J. J.
College/School:College of Medical Veterinary and Life Sciences > School of Infection & Immunity
College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Virus Research
Journal Name:Journal of Entomology and Zoology Studies
Publisher:AkiNik Publications
ISSN (Online):2320-7078
Copyright Holders:Copyright © 2020 JEZS
First Published:First published in Journal of Entomology and Zoology Studies 8(2): 1074-1086
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
169538T-cell mediated evolution of hepatitis C virus during acute infectionEmma ThomsonWellcome Trust (WELLCOTR)102789/Z/13/ZIII-MRC-GU Centre for Virus Research
656551Arbovirus interactions with arthropod hostsAlain KohlMedical Research Council (MRC)MC_UU_12014/8MVLS III - CENTRE FOR VIRUS RESEARCH