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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Evidence for a discrete evolutionary lineage within Equatorial Guinea suggests that the tsetse fly Glossina palpalis palpalis exists as a species complex
Molecular Ecology, Volume 18, No. 15, Year 2009
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Description
Tsetse flies of the palpalis group are major vectors of Human African Trypanosomiasis in Africa. Accurate knowledge of species identity is essential for vector control. Here, we combine ribosomal internal transcribed spacer 1 (ITS1), mitochondrial Cytochrome Oxidase 1 (COI) and microsatellites to determine the population structure and phylogenetic relations of Glossina p. palpalis in Equatorial Guinea. CO1 sequence data suggest that G. p. palpalis in Equatorial Guinea is a distinct subspecies from previously described G. p. palpalis in West Africa and Democratic Republic of Congo. Glossina p. palpalis in Equatorial Guinea and DRC share a common ancestor which diverged from West African G. p. palpalis around 1.9 Ma. Previous ITS1 length polymorphism data suggested the possible presence of hybrids in Equatorial Guinea. However, ITS1 showed incomplete lineage sorting compared with clearly defined COI groups, and data from 12 unlinked microsatellites provided no evidence of hybridization. Microsatellite data indicated moderate but significant differentiation between the populations analysed (Rio Campo, Mbini and Kogo). Moreover, unlike previous studies of G. p. palpalis, there was no evidence for heterozygote deficiency, presence of migrants or cryptic population structure. Variance effective population size at Rio Campo was estimated at 501-731 assuming eight generations per year. This study of the population genetics of G. p. palpalis in central Africa provides the first estimate of genetic differentiation between geographically separated G. p. palpalis populations. © 2009 Blackwell Publishing Ltd.
Authors & Co-Authors
Dyer, Naomi A.
United Kingdom, Liverpool
Liverpool School of Tropical Medicine
Furtado, Andreia
Portugal, Lisbon
Instituto de Higiene e Medicina Tropical
Cano, Jorge
Spain, Madrid
Centro Nacional de Medicina Tropical
Ferreira, Filipa
Portugal, Lisbon
Instituto de Higiene e Medicina Tropical
Odete Afonso, M.
Portugal, Lisbon
Instituto de Higiene e Medicina Tropical
Ndong-Mabale, Nicolás
Equatorial Guinea, Bata
Instituto de Salud Carlos Iii Bata
Ndong-Asumu, Pedro
Equatorial Guinea, Bata
Programa Nacional de Control de la Tripanosomiasis
Centeno-Lima, Sónia Chavarria Alves Ferreira
Portugal, Lisbon
Instituto de Higiene e Medicina Tropical
Benito, Agustìn
Spain, Madrid
Centro Nacional de Medicina Tropical
Weetman, David
United Kingdom, Liverpool
Liverpool School of Tropical Medicine
Donnelly, Martin J.
United Kingdom, Liverpool
Liverpool School of Tropical Medicine
Pinto, João
Portugal, Lisbon
Instituto de Higiene e Medicina Tropical
Statistics
Citations: 32
Authors: 12
Affiliations: 5
Identifiers
Doi:
10.1111/j.1365-294X.2009.04265.x
ISSN:
09621083
e-ISSN:
1365294X
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study
Study Locations
Multi-countries
Congo
Equatorial Guinea
Guinea