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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Strong genetic structure in Cameroonian populations of Bulinus truncatus (Gastropoda: Planorbidae), intermediate host of Schistosoma haematobium
Infection, Genetics and Evolution, Volume 11, No. 1, Year 2011
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Description
In order to evaluate the snail host contribution on the variability of mollusk/schistosome compatibility, the genetic structure of seven Cameroonian populations of the schistosome vector, Bulinus truncatus, was studied using four variable microsatellite loci. A substantial polymorphism mainly distributed among populations was observed. No heterozygous genotype was scored, confirming the high level of selfing rate occurring in B. truncatus populations. Contemporaneous samples were highly and significantly differentiated with a marginally significant correlation with geographical distances (P-value = 0.069). The different sites sampled seemed to rarely exchange migrants with very small Nm (∼0.22 or below). The data also suggest that B. truncatus subpopulations might be composed of very small and isolated units at much smaller surfaces than what was investigated. Even if more data (in particular more loci) will be needed to confirm these issues, they suggest that restricted gene flow plays an important role in maintaining differentiation among snail populations in the transmission foci, potentially leading to specific adaptation between each B. truncatus population and its local Schistosoma haematobium population. © 2010 Elsevier B.V.
Authors & Co-Authors
Djuikwo-Teukeng, Félicité Flore
France, Limoges
Institut D’epidémiologie Neurologique et de Neurologie Tropicale
Cameroon, Yaounde
Université de Yaoundé I
Njiokou, Flobert
Cameroon, Yaounde
Université de Yaoundé I
Nkengazong, Lucia
Cameroon, Yaounde
Université de Yaoundé I
de Mëeus, Thierry
Burkina Faso, Bobo-dioulasso
Centre International de Recherche-developpement Sur Lelevage en Zone Subhumide, Bobo-dioulasso
France, Paris
Cnrs Centre National de la Recherche Scientifique
Ekobo, Albert Samè
Cameroon, Yaounde
Centre Hospitalier et Universitaire de Yaounde
Dreyfuss, Gilles
France, Limoges
Institut D’epidémiologie Neurologique et de Neurologie Tropicale
Statistics
Citations: 12
Authors: 6
Affiliations: 5
Identifiers
Doi:
10.1016/j.meegid.2010.10.018
ISSN:
15671348
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study