Relative Activity of Brook Trout and Walleyes in Response to Flow in a Regulated River

Coded electromyogram telemetry transmitters were used to examine the effects of varying flows on the relative activity of brook trout Salvelinus fontinalis and walleye Sander vitreus in a regulated river. The relative activity levels of two brook trout and two walleyes were continuously monitored fo...

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Bibliographic Details
Published in:North American journal of fisheries management 2004-08, Vol.24 (3), p.1050-1057
Main Authors: Murchie, Karen J., Smokorowski, Karen E.
Format: Article
Language:English
Subjects:
Freshwater
Salvelinus fontinalis
Sander vitreus
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Summary:Coded electromyogram telemetry transmitters were used to examine the effects of varying flows on the relative activity of brook trout Salvelinus fontinalis and walleye Sander vitreus in a regulated river. The relative activity levels of two brook trout and two walleyes were continuously monitored for a minimum of 24 h, and measurements were compared with river flow values logged at nearby gauging stations. Generally, fish relative activity levels mimicked patterns of flow change, peaks in activity level corresponding to peaks in flow. Mean relative activity was generally greatest at extreme high (≥25‐m3/s) and low (
ISSN:0275-5947
1548-8675
DOI:10.1577/M03-130.1