Title

Adaptive Variation in Palp and GIll Size of the Zebra Mussel (Dreissena-Polymorpha) and Asian Clam (Corbicula-fluminea)

Document Type

Article

Publication Date

5-1-1995

Department

Biological Sciences

Abstract

Significant interpopulation differences occur in palp to gill area ratios of two nonindigenous species of freshwater bivalves in North America, Dreissena polymorpha and Corbicula fluminea. Larger palps (both species) and smaller gills (C. fluminea) occur in individuals from habitats characterized by a relatively high suspended solids concentration. The extremely brief evolutionary history of both species in North America is strong evidence that these differences in palp to gill area ratios are ecophenotypic.

Publication Title

Canadian Journal of Fisheries and Aquatic Sciences

Volume

52

Issue

5

First Page

1130

Last Page

1134

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