Population Dynamics and Exploitation of Rainbow Trout in Stokely Creek, Eastern Lake Superior
- 1 March 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 110 (2) , 210-215
- https://doi.org/10.1577/1548-8659(1981)110<210:pdaeor>2.0.co;2
Abstract
During 1970-1975 inclusive, 852 adult rainbow trout (S. gairdneri) from Stokely Creek were tagged; 248 tags were recovered by anglers. The recapture rate of tagged fish after 1 yr at large averaged 3.8% and after 2 yr 1.3%. The exploitation rate averaged 18.9% per yr. A stable population was produced each year in Stokely Creek during the study period and averaged 868 adult rainbow trout. Estimated total mortality averaged 41% per yr. Smolts resided in the creek 1, 2 or 3 yr before they migrated down to Lake Superior. Smolts that migrated at age II or III appeared to have higher survival rates than age-I smolts, judged by proportions of returning adults, whose history could be read from their scales. Fish that descended as yearling smolts grew much more rapidly during the 1st year in the lake than those that descended at 2 or 3 yr of age.This publication has 1 reference indexed in Scilit:
- Life History of Rainbow Trout (Salmo gairdneri) in Batchawana Bay, Eastern Lake SuperiorJournal of the Fisheries Research Board of Canada, 1971