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Loss of Floy Anchor Tags from Lake Whitefish
Author(s) -
Ebener Mark P.,
Copes Frederick A.
Publication year - 1982
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8659(1982)2<90:lofatf>2.0.co;2
Subject(s) - coregonus clupeaformis , fishing , fishery , fish <actinopterygii> , yield (engineering) , biology , coregonus , population , ecology , demography , materials science , sociology , metallurgy
Rate of loss of the Floy anchor tag (FD‐68C) was estimated as part of a study of the population dynamics of lake whitefish (Coregonus clupeaformis) in Lake Michigan. Estimated tag loss increased from 11.1% for fish at large for 1 year to 20.5 and 18.9% for those at large for 2 and 3 years, respectively. Possible causes of tag loss were commercial gill nets, growth of a filamentous algae on tags, insecure attachment because of rough seas during tagging, and unfamiliarity with the tagging system. A correction for tag‐loss rate in estimates of mortality and yield increased the estimated exploitation and fishing mortality rates by 17% and yield per recruit by 40%.