Gear comparison for sampling age-0 Mountain Whitefish in the Madison River, Montana

North American Journal of Fisheries Management
By: , and 

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Abstract

The efficacy of various sampling gears for age-0 Mountain Whitefish Prosopium williamsoni is largely unknown, which makes it difficult to investigate recruitment and early life history dynamics for the species. We compared four gears: seine, backpack electrofisher, minnow trap, and lighted minnow trap. Gears were tested in backwaters, large channels, and small channels in the Madison River, Montana. No age-0 Mountain Whitefish were captured in minnow traps or lighted minnow traps. Mean CPUE of age-0 Mountain Whitefish was higher for seining (0.18 fish/m2; SD, 0.39) than for electrofishing (0.01 fish/m2; SD, 0.03), and the CV was lower for seining. A broader length distribution was sampled by seining (17–41 mm) than with electrofishing (21–36 mm). Age-0 Mountain Whitefish CPUE in seines was highest in backwaters. In channel sites, Mountain Whitefish presence was associated with areas of still or slow water ≥2 m2. Relative to the other sampling gears we evaluated, seining was the most efficient gear for sampling age-0 Mountain Whitefish in a lotic ecosystem.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Gear comparison for sampling age-0 Mountain Whitefish in the Madison River, Montana
Series title North American Journal of Fisheries Management
DOI 10.1080/02755947.2016.1254128
Volume 37
Issue 1
Year Published 2017
Language English
Publisher Taylor and Francis Online
Contributing office(s) Coop Res Unit Seattle
Description 8 p.
First page 189
Last page 195
Country United States
State Montana
Other Geospatial Madison River
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