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Evaluation of Stocking Cutthroat Trout, Salmo clarki, in Munsel Lake, Oregon
Author(s) -
Hansen David J.
Publication year - 1971
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(1971)100<55:eoscts>2.0.co;2
Subject(s) - stocking , fishery , trout , fishing , salmo , fish <actinopterygii> , catch and release , trophy , biology , electrofishing , geography , recreational fishing , archaeology
Natural mortality, emigration, and yield to anglers were assessed in 1962 for three releases of cutthroat trout (Salmo clarki) in Munsel Lake, Oregon. Stocked fish were caught emigrating from March 30, the start of trapping, to July 3. Natural mortality, 16 to 75%, was the dominant factor determining the number of fish available to anglers, and this mortality was greatest when anglers could not fish immediately after stocking. Yield of trout to anglers, estimated by creel census, indicated that after release fish were removed rapidly from the lake. Catch by anglers could be increased and catch per unit effort stabilized by liberating trout just before the fishing season and once or twice in the summer. This policy could reduce losses of fish from natural mortality and emigrations.