Some Ecological Relationships Between Yellow Perch and Cutthroat Trout in Thompson Lakes, Montana
- 1 January 1955
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 84 (1) , 239-248
- https://doi.org/10.1577/1548-8659(1954)84[239:serbyp]2.0.co;2
Abstract
The relationship between, yellow perch and cutthroat trout in Thompson Lakes, Montana, was investigated in the summers of 1952 and 1953. These lakes originally contained cutthroat trout and were later planted with yellow perch. The spawning time of the yellow perch was in early May, and for the cutthroat trout in late May. The population of yellow perch was large and growth was very slow. Although the number of cutthroat trout was small, the growth rate for this species was about average. The food of yellow perch was largely immature aquatic insects and plankton while that of cutthroat trout was mostly mature aquatic insects and small perch. Yellow perch were commonly distributed along the lake margins and concentrations of perch fry and adults were found in these areas in the spring. During this period the salmonid fishes were predominately in the deep water. Spot poisoning of the yellow perch concentrations practically destroyed all of the fish in the treated area. Management suggestions are given.This publication has 0 references indexed in Scilit: