Michigan Department of Natural Resources
Institute for Fisheries Research Report No.1767, 1970
Differential Seasonal Migration of the Crayfish, Orconectes virilis (Hagen), in Marl Lakes
Walter T. Momot and Howard Gowing
Abstract.-A differential seasonal migration of Orconectes virilis was observed during the summer in West Lost Lake, Otsego County, Michigan, in an earlier study during 1962 and 1963. The present additional observations on O. virilis, during three summers and in three lakes, confirm this migration. Evidence from other areas suggests this movement is a general phenomenon of the species throughout its range. An explanation for seasonal migration is proposed.