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Longevity, Survival, and Harvest of Tagged Walleyes in Lake Gogebic, Michigan
Author(s) -
Schneider James C.,
Eschmeyer Paul H.,
Crowe Walter R.
Publication year - 1977
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1977)106<566:lsahot>2.0.co;2
Subject(s) - stizostedion , longevity , fishing , fish <actinopterygii> , fishery , biology , mortality rate , demography , geography , genetics , sociology
Returns from 4,400 walleye (Stizostedion v. vitreum) tagged in Lake Gogebic, Michigan, in 1947, extended over 18 years. One fish had reached an estimated age of 26 or more years at the time of recovery and two others 23 years. The longevity of walleyes in Lake Gogebic apparently was not due to unusually low natural mortality but to low fishing mortality and statistical chance. The sexes differed significantly in rates of fishing mortality and survival. Anglers recaptured 12.6% of the females but only 7.3% of the males; annum survival was 65% for females and 80% for males.