La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Adaptation of the Estuarine Fish Fundulus heteroclitus (Atlantic Killifish) to Polychlorinated Biphenyls (PCBs)
Auteurs :	Diane E. Nacci, Auteur ; Denise Champlin, Auteur ; Saro Jayaraman, Auteur
Type de document :	Article
Dans :	Estuaries and Coasts (33(4) JUL 2010)
Article en page(s) :	853-864
Résumé :	In this study, we describe remarkable intraspecific variation in sensitivity to the broadly distributed pollutants, polychlorinated biphenyls (PCBs), among wild populations of the nonmigratory estuarine Atlantic killifish (Fundulus heteroclitus). Variation among killifish populations was characterized in 28-day laboratory challenges using embryonic and larval life stages and the highly toxic, dioxin-like PCB congener, 3,3'4,4',5-hexachlorobiphenyl (PCB126). In summarizing results for 24 populations, we show that killifish populations vary over four orders of magnitude in their sensitivity to PCB126 and that this variation is adaptive to the magnitude of contamination at their residence site. The four least-sensitive killifish populations reside in

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