Alternate Title

Biochemical Systematics in Southeastern Populations of Fundulus heteroclitus and Fundulus grandis


Four populations of Fundulus heteroclitus from the southeastern United States were compared electrophoretically to eight populations of F. grandis from Florida by using the products of 25 loci. Significant differences were found between F. heteroclitus and F. grandis. Only minor variation was found among the eight populations of F. grandis, and the recognition of Gulf, Florida east-coast and Florida Keys populations as distinct species or subspecies was not supported. Therefore, the Florida Keys populations of F. g. saguanus are relegated to F. g. grandis. The name F. g. saguanus should apply, for now, only to Cuban material.