Growth and Maturation of Chinook Salmon, Oncorhynchus tshawytscha, Introduced into Lake Superior
Richard E. Berg
Abstract
Richard E. Berg
Abstract
Chinook salmon introduced into Lake Superior were sampled in Cherry Creek in 1971, in the Dead River during 1974 and 1975, and in Presque Isle Harbor during 1974 and 1975. A total of 80 males and 30 females were sampled. Analysis of the scales revealed that maturation could occur at ages I+, II+, III+, and IV+. All fish were found to have a planting check present; no fish were found having more than four annuli. There were no essential differences in age and growth between the sexes.
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Chinook salmon introduced into Lake Superior were sampled in Cherry Creek in 1971, in the Dead River during 1974 and 1975, and in Presque Isle Harbor during 1974 and 1975. A total of 80 males and 30 females were sampled. Analysis of the scales revealed that maturation could occur at ages I+, II+, III+, and IV+. All fish were found to have a planting check present; no fish were found having more than four annuli. There were no essential differences in age and growth between the sexes.
Key concepts: Chinook wind, Oncorhynchus, Fish <Actinopterygii>, Fishery, Biology