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Feeding competition between larval lake whitefish and lake herring

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Abstract

The potential for competition for food between larval lake whitefish (Coregonus clupeaformis) and lake herring (C. artedi) 1- to 8-wk of age was explored in a series of 1-h laboratory feeding studies. Feeding started at 2-wk post-hatch. Learning and fish size appear to be more important than prey density at the onset of feeding. Species differed in their feeding behavior and consumption noticeably by 5-wk and substantially by 8-wk. Lake whitefish generally were more aggressive foragers than lake herring, attacking and capturing more prey. At high plankton density at 8-wk, lake herring feeding was depressed in mixed-fish treatments. This difference in competitive food consumption between the two coregonids occurs at a critical life stage, and when combined with other biotic and abiotic factors, may have a significant impact on recruitment.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Feeding competition between larval lake whitefish and lake herring
Year Published 1995
Language English
Publisher E. Schweizerbart'sche Verlagsbuchhandlung
Publisher location Stuttgart, Germany
Contributing office(s) Great Lakes Science Center
Description p. 153-162
Larger Work Type Book
Larger Work Subtype Other Government Series
Larger Work Title Biology and Management of Coregonid Fishes -- 1993
First page 153
Last page 162
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