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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	The South Georgia Pintail Anas g. georgica in captivity: History, management and implications for conservation.
Auteurs :	A. R. Martin, Auteur
Type de document :	Article
Dans :	Wildfowl (53 2002)
Article en page(s) :	215-223
Langues:	Anglais
Résumé :	The South Georgia Pintail is the southernmost waterfowl taxon and an island endemic which survives year-round in some of the most hostile conditions encountered by any waterfowl. The wild population is currently secure, but small and vulnerable to natural and anthropogenic threats. After the importation of 17 birds in three separate groups over four decades, this pintail, is now well established in captivity. The captive flock originally descended from a single breeding pair, and reproductive success diminished with successive generations, probably because of inbreeding. Breeding success markedly improved after the introduction of 12 new birds from the wild in 1998. With appropriate care and management, this taxon will breed prolifically, and a captive population could be approximately doubled each year. With 13 founders, the genetic diversity of the captive flock in 2002 is probably adequate for the maintenance of a healthy population in the short and medium term. The introduction of new birds from the wild may be necessary for longer-term genetic vigour. Results from this study allow predictions about the breeding biology of the wild population. These include a polygynous or promiscuous mating system with no territoriality, small clutches with eggs laid on alternate days, and an ability to lay multiple replacement clutches after earlier losses.

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