La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Using the "placeholder" concept to reduce genetic introgression of an endangered carnivore
Auteurs :	Eric M. Gese, Auteur ; Patricia A. Terletzky, Auteur
Type de document :	Article
Dans :	Biological Conservation (192 DEC 2015)
Article en page(s) :	11-19
Langues:	Anglais
Résumé :	One of the most endangered species is the red wolf, Canis rufus. Reintroduction of the red wolf began in 1987, but in 1993 hybridization between coyotes (Canis latrans) and wolves was documented. To,reduce genetic introgression, coyotes and coyote-wolf hybrids were captured, sterilized, and released as "placeholders". Placeholders held territories until either displaced or killed by a wolf, or management personnel removed them before releasing a wolf. We evaluated the placeholder concept by examining the number of animals sterilized and released, likelihood of displacement by a wolf, factors influencing displacements, territory fidelity of placeholders, and survival rates and causes of mortality of placeholders and wolves. Of the 182 placeholders, 125 were coyotes and 57 were hybrids. From 1999 to 2013,

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