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

January 1, 1993

In laboratory studies, we quantified predation rates and handling time of crayfish (Orconectes virilis) on zebra mussels (Dreissena polymorpha) and rainbow trout (Oncorhynchus 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.

Publication Year 1993
Title Crayfish (Orconectes virilis) predation on zebra mussels (Dreissena polymorpha)
DOI 10.1080/02705060.1993.9664861
Authors Joy Love, Jacqueline F. Savino
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Freshwater Ecology
Index ID 1000658
Record Source USGS Publications Warehouse
USGS Organization Great Lakes Science Center