Document Type

Report

Journal/Book Title/Conference

Annual Progress Report 1988

Volume

47

Issue

3

Publisher

Department of Fisheries and Wildlife

Publication Date

12-1988

Keywords

trout, spatial overlap, habitat

First Page

1

Last Page

62

Abstract

Prior work at East Canyon Reservoir, Utah indicated that adult trout are important predators of stocked juvenile rainbow trout. Brown trout, in particular, were exclusively piscivorous when th~y exceeded 185 mm standard length. Fish became increasingly important in the diet of cutthroat trout greater than 330 mm. The purpose of this study was to further document the effect of adult trout on survival of juvenile rainbow trout in mid-elevation reservoirs. Causey Reservoir was chosen because it was thought to contain large brown and cutthroat trout and had not been intensively studied during the last eight years.

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