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Title: Lake trout consumption and recent changes in the fish assemblage of Flaming Gorge Reservoir

Abstract

Bioenergetics modeling was used to quantify the consumption dynamics of lake trout Salvelinus namaycush in Flaming Gorge Reservoir, Utah-Wyoming. Analysis of diet and population estimates of different size-classes of lake trout indicated that kokanees Oncorhynchus nerka made up the greatest proportion of prey biomass. Examination of growth rates of forage fish and predator-prey size ratios indicated that Utah chub Gila atraria were more vulnerable than kokanees to lake trout predation. Utah chub grow slower than kokanees and thus were susceptible to piscivores over a longer age span. The authors conclude the kokanees will make up an even large proportion of the pelagic fish assemblage of Flaming Gorge Reservoir in future years. 44 refs., 5 figs., 4 tabs.

Authors:
 [1];  [2]
  1. Wyoming Game and Fish Department, Casper, WY (United States)
  2. Utah State Univ., Logan, UT (United States)
Publication Date:
OSTI Identifier:
5148084
Resource Type:
Journal Article
Journal Name:
Transactions of the American Fisheries Society; (United States)
Additional Journal Information:
Journal Volume: 122:6; Journal ID: ISSN 0002-8487
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; TROUT; DIET; GROWTH; PREDATOR-PREY INTERACTIONS; ANIMALS; AQUATIC ORGANISMS; FISHES; VERTEBRATES; 540310* - Environment, Aquatic- Basic Studies- (1990-)

Citation Formats

Yule, D L, and Luecke, C. Lake trout consumption and recent changes in the fish assemblage of Flaming Gorge Reservoir. United States: N. p., 1993. Web. doi:10.1577/1548-8659(1993)122<1058:LTCARC>2.3.CO;2.
Yule, D L, & Luecke, C. Lake trout consumption and recent changes in the fish assemblage of Flaming Gorge Reservoir. United States. https://doi.org/10.1577/1548-8659(1993)122<1058:LTCARC>2.3.CO;2
Yule, D L, and Luecke, C. 1993. "Lake trout consumption and recent changes in the fish assemblage of Flaming Gorge Reservoir". United States. https://doi.org/10.1577/1548-8659(1993)122<1058:LTCARC>2.3.CO;2.
@article{osti_5148084,
title = {Lake trout consumption and recent changes in the fish assemblage of Flaming Gorge Reservoir},
author = {Yule, D L and Luecke, C},
abstractNote = {Bioenergetics modeling was used to quantify the consumption dynamics of lake trout Salvelinus namaycush in Flaming Gorge Reservoir, Utah-Wyoming. Analysis of diet and population estimates of different size-classes of lake trout indicated that kokanees Oncorhynchus nerka made up the greatest proportion of prey biomass. Examination of growth rates of forage fish and predator-prey size ratios indicated that Utah chub Gila atraria were more vulnerable than kokanees to lake trout predation. Utah chub grow slower than kokanees and thus were susceptible to piscivores over a longer age span. The authors conclude the kokanees will make up an even large proportion of the pelagic fish assemblage of Flaming Gorge Reservoir in future years. 44 refs., 5 figs., 4 tabs.},
doi = {10.1577/1548-8659(1993)122<1058:LTCARC>2.3.CO;2},
url = {https://www.osti.gov/biblio/5148084}, journal = {Transactions of the American Fisheries Society; (United States)},
issn = {0002-8487},
number = ,
volume = 122:6,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 1993},
month = {Mon Nov 01 00:00:00 EST 1993}
}