Tag Failure Associated with a Net Fishery as a Source of Experimental Error

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Abstract
Tags may be forcibly separated from the fish by the action of the gear with which it is recaptured. This problem was evaluated by both tagging and removing the adipose fin on maturing Chinook salmon (Oncorhynchus tshawytscha) and sampling in the gill net catches. In this study, a maximum estimate of error necessitating a correction coefficient of 1.196 is indicated. Error of this magnitude is of serious consequence to estimates of vital statistics of populations subject to high rates of exploitation.

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