Average ratio Dreissena spp. weight: host unionid weight for unionid species collected in waterbodies dominated by different Dreissena species.

Unionids were collected during the peak of Dreissena polymorpha invasion in western Lake Erie (1990) and in the Detroit River (1992) [71], and in present study from D. polymorpha-dominated lakes (St. Clair, Burt, Douglas, Paradise) and D. r. bugensis-dominated lakes (Erie, Ontario).atotal dry weight was used.btotal wet weight was used.Average ratio Dreissena spp. weight: host unionid weight for unionid species collected in waterbodies dominated by different Dreissena species.