La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Potential competition between hybrid striped bass (Morone saxatilis x M-americana) and striped bass (M-saxatilis) in the Cape Fear River Estuary, North Carolina
Auteurs :	W. S. Patrick, Auteur ; M. L. Moser, Auteur
Type de document :	Article
Dans :	Estuaries (24(3) JUN 2001)
Article en page(s) :	425-429
Résumé :	Gillnet surveys from 1990 to 1992 and from 1996 to 1999 indicated a two-fold decrease in native striped bass (Morone saxatilis), populations and a concomitant two-fold increase in hybrid striped bass (Mai-one saxatilis x M. americana) in the Cape Fear River estuary, North Carolina. Gut content analysis indicated high diet overlap, and tags recapture data suggested that hybrid striped bass participate in spawning migrations. These data provide circumstantial evidence that hybrid striped bass compete with striped bass for food and that they may compete for mates or habitat on the spawning grounds. Increasing abundance of adult hybrid striped bass in this system elevates the likelihood of hybrid introgression. We recommend that stocking of hybrid striped bass be terminated to preserve native striped bass populations.

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