Simard Frédéric, Fontenille Didier, Lehmann T., Girod R., Brutus Laurent, Gopaul R., Dournon C., Collins F.H. (1999). High amounts of genetic differentiation between populations of the malaria vector Anopheles arabiensis from West Africa and Eastern outer islands. American Journal of Tropical Medicine and Hygiene, 60 (6), p. 1000-1009. ISSN 0002-9637.
Titre du document
High amounts of genetic differentiation between populations of the malaria vector Anopheles arabiensis from West Africa and Eastern outer islands
Année de publication
1999
Auteurs
Simard Frédéric, Fontenille Didier, Lehmann T., Girod R., Brutus Laurent, Gopaul R., Dournon C., Collins F.H.
Source
American Journal of Tropical Medicine and Hygiene, 1999,
60 (6), p. 1000-1009 ISSN 0002-9637
Polymorphism at nine microsatellites loci was examined to assess the level of genetic differentiation between four Anopheles arabiensis populations from Senegal, the high plateau of Madagascar, and Reunion and Mauritius islands. Eight of nine loci showed great polymorphism (2-16 alleles/locus) and significant genetic differentiation was revealed between all four populations by F- and R-statistics, with Fst estimates ranging from 0.080 to 0.215 and equivalent Rst values ranging between 0.022 and 0.300. These high amounts of genetic differentiation are discussed in relation to geographic distance including large bodies of water, and history of mosquito settlement, and insecticide use on the islands. The results suggest that historical events of drift rather than mutation are probably the forces generating genetic divergence between these populations, with homogenization of the gene pool by migration being dramatically restricted across the ocean. (Résumé d'auteur)
Plan de classement
Répartition et bioécologie des anophèles [052ANOPAL02]
Descripteurs
MOUSTIQUE ; VECTEUR ; PALUDISME ; GENETIQUE DE POPULATION ; STRUCTURE GENETIQUE ; FLUX ; GENE ; POLYMORPHISME GENETIQUE ; VARIABILITE GENETIQUE ; ETUDE REGIONALE ; MICROSATELLITE
Description Géographique
SENEGAL ; MADAGASCAR ; REUNION ; MAURICE
Localisation
Fonds IRD [F B010018676] ;
Montpellier (Centre IRD)
Identifiant IRD
fdi:010018676
