Management Implications of Ecological Segregation between Two Introduced Populations of Cutthroat Trout in a Small Colorado Lake
作者:
JohnR. Trojnar,
RobertJ. Behnke,
期刊:
Transactions of the American Fisheries Society
(Taylor Available online 1974)
卷期:
Volume 103,
issue 3
页码: 423-430
ISSN:0002-8487
年代: 1974
DOI:10.1577/1548-8659(1974)103<423:MIOESB>2.0.CO;2
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Ecological differences reflected in food and habitat preference and angling vulnerability were investigated between two introduced sympatric populations of cutthroat trout, Salmo clarki. The Pikes Peak cutthroat fed to a large extent on Daphnia (68% by volume), whereas the Snake River cutthroat fed primarily on terrestrial insects (68% by volume). Other food habit differences were observed in the brook trout, Salvelinus fontinalis, and rainbow trout, Salmo gairdneri, populations.
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