Relative distribution, diversity, and bloodmeal sources of mosquitoes and known vectors of Rift Valley fever phlebovirus in three differing ecosystems in Bura, Tana River County, Kenya

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cg.authorship.typesCGIAR and developing country instituteen_US
cg.authorship.typesCGIAR and advanced research instituteen_US
cg.contributor.affiliationFreie Universität Berlinen_US
cg.contributor.affiliationInternational Livestock Research Instituteen_US
cg.contributor.affiliationSwedish University of Agricultural Sciencesen_US
cg.contributor.affiliationUppsala Universityen_US
cg.contributor.affiliationKenya Medical Research Instituteen_US
cg.contributor.affiliationDirectorate of Veterinary Services, Kenyaen_US
cg.contributor.crpAgriculture for Nutrition and Healthen_US
cg.contributor.donorDeutscher Akademischer Austauschdiensten_US
cg.contributor.donorEconomic and Social Research Council, United Kingdomen_US
cg.contributor.donorNatural Environment Research Council, United Kingdomen_US
cg.contributor.donorGovernment of the United Kingdomen_US
cg.coverage.countryKenyaen_US
cg.coverage.iso3166-alpha2KEen_US
cg.coverage.regionAfricaen_US
cg.coverage.regionEastern Africaen_US
cg.creator.identifierDeborah Mbotha: 0000-0003-2109-6411en_US
cg.creator.identifierJohanna Lindahl: 0000-0002-1175-0398en_US
cg.creator.identifierBernard Bett: 0000-0001-9376-2941en_US
cg.creator.identifierDelia Grace: 0000-0002-0195-9489en_US
cg.howPublishedFormally Publisheden_US
cg.identifier.doihttps://doi.org/10.1089/vbz.2019.2503en_US
cg.isijournalISI Journalen_US
cg.issn1530-3667en_US
cg.issue5en_US
cg.journalVector-Borne and Zoonotic Diseasesen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.ilriAGRI-HEALTHen_US
cg.subject.ilriIRRIGATIONen_US
cg.subject.ilriRVFen_US
cg.volume20en_US
dc.contributor.authorMbotha, Deborahen_US
dc.contributor.authorHoppenheit, A.en_US
dc.contributor.authorLindahl, Johanna F.en_US
dc.contributor.authorBett, Bernard K.en_US
dc.contributor.authorGrace, Deliaen_US
dc.contributor.authorLutomiah, J.en_US
dc.contributor.authorPieper, L.en_US
dc.contributor.authorKairu-Wanyoike, Salomeen_US
dc.contributor.authorClausen, Peter-Henningen_US
dc.date.accessioned2020-05-23T09:03:28Zen_US
dc.date.available2020-05-23T09:03:28Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/108303en_US
dc.titleRelative distribution, diversity, and bloodmeal sources of mosquitoes and known vectors of Rift Valley fever phlebovirus in three differing ecosystems in Bura, Tana River County, Kenyaen_US
dcterms.abstractEnvironmental modifications disturb the equilibrium of mosquito populations, altering the risk of mosquito-borne diseases. Mosquito distribution, diversity, and bloodmeal sources were examined to compare Rift Valley fever (RVF) risk among irrigated, riverine, and pastoral ecosystems in Bura, Tana River County, Kenya, between September 2014 and June 2015. Thirty-eight households and 21 irrigation fields were selected for the study. Mosquitoes were trapped with carbon dioxide-impregnated CDC traps, one trap per household and three traps per irrigated field, and morphologically identified using taxonomic keys. Host DNA was extracted from engorged females and cytochrome b genes amplified by PCR to identify sources of bloodmeals. A total of 21,015 mosquitoes were collected; 5742 within households in the 3 ecosystems and 15,273 within irrigated fields. Mosquitoes collected within irrigated fields belonged to 8 genera and 37 species, while those from households within the irrigation scheme belonged to 6 genera and 29 species. Collections from riverine and pastoral households belonged to five and four genera, respectively. The most abundant genera in the irrigated fields were Aedes (21%) and Mansonia (22%), while Anopheles (43%) was the most abundant within households. Most mosquitoes in riverine and pastoral households belonged to Anopheles (76%) and Aedes (65%) genera, respectively. Seasonal variation driven by rainfall was evidenced by spikes in mosquito numbers within irrigated and riverine ecosystems. Host species identification revealed that goats and humans were the main sources of bloodmeal. There was an overall increase in mosquito abundance and diversity as a result of the presence of the irrigated ecosystem in this county, and an increased availability of highly RVF-susceptible hosts as a result of the establishment and concentration of residential areas, promoting potential vector–host contacts. These results highlight the impact of anthropogenic changes on mosquito ecology, potentially heightening the risk of transmission and maintenance of RVF in this region.en_US
dcterms.accessRightsLimited Accessen_US
dcterms.audienceScientistsen_US
dcterms.bibliographicCitationMbotha, D., Hoppenheit, A., Lindahl, J., Bett, B., Grace, D., Lutomiah, J., Pieper, L., Kairu-Wanyoike, S. and Clausen, P.-H. 2020. Relative distribution, diversity, and bloodmeal sources of mosquitoes and known vectors of Rift Valley fever phlebovirus in three differing ecosystems in Bura, Tana River County, Kenya. Vector-Borne and Zoonotic Diseases 20(5): 365–373.en_US
dcterms.extentp. 365-373en_US
dcterms.issued2020-05-01en_US
dcterms.languageenen_US
dcterms.licenseOtheren_US
dcterms.publisherMary Ann Liebert Incen_US
dcterms.subjectrift valley feveren_US
dcterms.subjectirrigationen_US
dcterms.subjectarbovirusesen_US
dcterms.typeJournal Articleen_US

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