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Low genetic diversity and shallow population structure in the endangered vulture, Gyps coprotheres
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Journal Article
Low genetic diversity and shallow population structure in the endangered vulture, Gyps coprotheres
2019
Overview
Globally, vulture species are experiencing major population declines. The southern African Cape vulture (
Gyps coprotheres
) has undergone severe population collapse which has led to a listing of Endangered by the IUCN. Here, a comprehensive genetic survey of
G. coprotheres
is conducted using microsatellite markers. Analyses revealed an overall reduction in heterozygosity compared to other vulture species that occur in South Africa (
Gypaetus barbatus
,
Necrosyrtes monachus
, and
Gyps africanus
). Bayesian clustering analysis and principal coordinate analysis identified shallow, subtle population structuring across South Africa. This provides some support for regional natal philopatry in this species. Despite recent reductions in population size, a genetic bottleneck was not detected by the genetic data. The
G. coprotheres
, however, did show a significant deficiency of overall heterozygosity. This, coupled with the elevated levels of inbreeding and reduced effective population size, suggests that
G. coprotheres
is genetically depauperate. Given that genetic variation is considered a prerequisite for adaptation and population health, the low genetic diversity within
G. coprotheres
populations is of concern and has implications for the future management and conservation of this species.
Publisher
Nature Publishing Group UK,Nature Publishing Group
Subject
