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Prediction of Wild Brown Trout Catch Rates from Estimated Yearling Population Density and Fishing Intensity
Author(s) -
EngstromHeg Robert
Publication year - 1986
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(1986)6<410:powbtc>2.0.co;2
Subject(s) - fishing , fishery , catch and release , trout , population density , population , environmental science , fish <actinopterygii> , biology , recreational fishing , demography , sociology
Catch rates for wild brown trout (Salmo trutta) in New York streams were predicted successfully by equations of the form C/f= N 1 /bf+ a where C/f is catch per hour of fishing, N 1 is late summer or early fall population density of yearling wild brown trout, f is fishing intensity in hours of fishing per unit of stream area, and a and b are constants. Correlations between observed and predicted catch rates were higher for total catch than for creeled catch, and for mean values of N 1 than for single‐year values. The equations can be used in setting stocking rates aimed at target catch rates, determining need for protective regulations, and estimating the potential value of wild trout fisheries.