Differences in Siphonal Anatomy Between Dreissena polymorpha and D. bugensis (Mollusca: Dreissenidae) in Lake Ontario

Douglas G. Smith

doi:10.1674/0003-0031(1999)141[0402:DISABD]2.0.CO;2

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Douglas G. Smith¹

¹Department of Biology, University of Massachusetts, Amherst, 01003.

Abstract

The Great Lakes region has come to be occupied by at least two species of Dreissena, the zebra mussel, D. polymorpha and the quagga mussel, D. bugensis. The species are distinguished on the basis of shell morphology and electrophoretic patterns. Comparisons of the posterior mantle regions reveals differences between the two species in the extent of sensory papillae above the exhalant siphon and the point of union of the middle mantle fold.

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Douglas G. Smith "Differences in Siphonal Anatomy Between Dreissena polymorpha and D. bugensis (Mollusca: Dreissenidae) in Lake Ontario," The American Midland Naturalist 141(2), 402-405, (1 April 1999). https://doi.org/10.1674/0003-0031(1999)141[0402:DISABD]2.0.CO;2

Accepted: 1 June 1998; Published: 1 April 1999

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