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Crayfish (Orconectes virilis) predation on zebra mussels (Dreissena polymorpha)

Journal of Freshwater Ecology

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Abstract

In laboratory studies, we quantified predation rates and handling time of crayfish (Orconectes virilis) on zebra mussels (Dreissena polymorpha) and rainbow trout (Oncorhhynchus mykiss) eggs. In single prey species tests, crayfish ate zebra mussels at similar rates as they ate rainbow trout eggs. When both prey were present, crayfish preferred rainbow trout eggs. Handling time of mussels was about twice that of rainbow trout eggs, and energetic content of mussels was lower. Therefore, net benefit for foraging on rainbow trout eggs was about three times that of foraging on zebra mussels.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Crayfish (Orconectes virilis) predation on zebra mussels (Dreissena polymorpha)
Series title:
Journal of Freshwater Ecology
Volume
8
Issue:
3
Year Published:
1993
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 253-259
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Freshwater Ecology
First page:
253
Last page:
259
Number of Pages:
6