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Application of the DeLury Method in Determining the Angler Harvest of Stocked Catchable‐Sized Trout
Author(s) -
Von Geldern C. E.
Publication year - 1961
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(1961)90[259:aotdmi]2.0.co;2
Subject(s) - fishery , fishing , salmo , fish <actinopterygii> , trout , rainbow trout , population , census , environmental science , geography , biology , demography , sociology
Creel‐census data from three heavily fished California lakes are used to illustrate a method of determining the proportion of stocked catchable‐sized rainbow trout, Salmo gairdneri, taken by anglers. This technique requires the planting of experimental lots of fish marked by the removal of designated fins. A creel checker gathers data used to estimate catch rate and fishing pressure for several days following the experimental plant. These estimates are used to determine a regression line similar to that proposed by D. B. DeLury for fish‐population estimates. The regression line is used to make an estimate of the number of fish taken after the census has been terminated.