Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2006
Microsatellite typing reveals strong genetic structure of Schistosoma mansoni from localities in Kenya.
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Agola L E, Mburu D N, DeJong R J, Mungai B N, Muluvi G M, Njagi E N M, Loker E S, Mkoji G M
Аннотация
Genetic diversity and population structure of seven populations of Schistosoma mansoni sampled in Kenya were assessed using five microsatellite markers. The mean number of alleles per locus, expected heterozygosity in Hardy-Weinberg equilibrium and pairwise F(ST) values ranged from 5.2 to 10.7, 0.5-0.8 and 3.6-27.3%, respectively. These data reveal that S. mansoni populations in Kenyan have relatively high levels of genetic diversity and is significantly differentiated. Our data combined with information on biogeography support the hypothesis that the strong genetic structure in Kenyan schistosomes is as a result of limited gene flow and large population sizes. Resistance to anthelminthics has not been reported among the Kenyan schistosomes, we hypothesize that this is probably due to the very little gene flow among populations, thereby limiting opportunities for the spread of rare alleles that might confer resistance to the drugs.