Specific Growth Rate Differences between Lake Migrating and Stream Resident Brook Trout (Salvelinus fontinalis) and Steelhead Trout (Oncorhynchus mykiss) [ABSTRACT]
Anderson T. 2005. Specific Growth Rate Differences between Lake Migrating and Stream Resident Brook Trout (Salvelinus fontinalis) and Steelhead Trout (Oncorhynchus mykiss) [ABSTRACT]. Pages 43. In National Park Service: Western Great Lakes Research Conference. Marquette, MI. March 30-31, 2005. National Park Service. Fourth Annual
Most salmonids, including brook trout (Salvelinus fontinalis) and rainbow trout (Oncorhynchus mykiss), exhibit both anadromous and nonanadromous forms. Although studies have found differences in juvenile growth rates and behavior attributed to these different life histories, little has been documented in the Great Lakes. Fish were PIT tagged following a spatially and temporally stratified protocol in two creeks located in Pictured Rocks National Lakeshore. Each creek was equipped with PIT tag reading antennas where it entered Lake Superior. Trout were recaptured and fish total length (mm) and mass (g) were taken. Specific growth rates and condition factor were calculated for tagging cohorts of each species. Fish that moved downstream past the antenna system tended to have a higher average, though not significant, specific growth rate for all four tagging cohorts.
- Type
- Conference Proceeding Paper
- Authors
- Anderson, Todd
- Units
- PIRO
- Keywords
- Anadromous Fish, Animal Behavior, Brook Trout (Salvelinus Fontinalis), Growth, Metabolism, Steelhead (Oncorhynchus mykiss)