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Comparison of electrofishing and rotenone for sampling largemouth bass in vegetated areas of two Florida lakes

North American Journal of Fisheries Management

By:
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DOI: 10.1577/1548-8675(2003)023<0181:COEARF>2.0.CO;2

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Abstract

We compared the sampling precision and efficiency of electrofishing and rotenone for assessing populations of largemouth bass Micropterus salmoides in vegetated portions of two Florida lakes. Sampling was conducted at Lochloosa and Orange lakes in north-central Florida from 1990 to 1999. Significant differences in length frequencies were determined between the two methods in 5 of 9 years for each lake. In years where differences existed, electrofishing collected larger fish than did rotenone. The maximum deviation between cumulative relative length frequencies for the two methods was not related to total vegetation, native emergent vegetation, or hydrilla Hydrilla verticallata coverage at either lake. Sampling precision was greater for electrofishing than for rotenone; electrofishing also required less sampling effort to detect changes in the abundance of juvenile and adult largemouth bass. Electrofishing was a more precise and cost-effective method than rotenone for estimating largemouth bass abundance.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparison of electrofishing and rotenone for sampling largemouth bass in vegetated areas of two Florida lakes
Series title:
North American Journal of Fisheries Management
DOI:
10.1577/1548-8675(2003)023<0181:COEARF>2.0.CO;2
Volume
23
Issue:
1
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
North American Journal of Fisheries Management
First page:
181
Last page:
188
Number of Pages:
8