Size, Age, and Fecundity of Pink Salmon in Michigan
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Authors
Wagner, Wilbert C.
Issue Date
1985-12-17
Type
Technical Report
Language
en_US
Subject
Fisheries Division , Michigan Department of Natural Resources , 1985 , Fisheries Research Report No. 1933 , Pink Salmon
Alternative Title
Abstract
Data on size, age, and fecundity of mature pink salmon (Oncorhvnchus gorbuscha) were
collected during 1973-84. Most salmon matured when 2 years old and the males were
significantly longer than females in all three lakes. Mean lengths (mm) of males and females
were: Lake Superior—387 and 379, Lake Huron—468 and 436, and Lake Michigan—482 and
443. Salmon that matured in 3 years were found only in Lake Superior tributaries and again
males were significantly longer than females (487 versus 467). Until the middle 1970’s all pink
salmon were assumed to mature when they were 2 years old but a mature 3-year-old salmon
was found in 1976 and 3-year-old salmon have since become common. Mean fecundity of 127
pink salmon from lakes Superior and Huron was 1,030 eggs. Fecundity of 2- and 3-year-old
salmon was similar.
Description
Partial OCR done. 14 pages total.
Citation
Publisher
Michigan Department of Natural Resources Fisheries Division