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Comparison of Electrofishing and Rotenone for Sampling Largemouth Bass in Vegetated Areas of Two Florida Lakes
Author(s) -
Tate William B.,
Allen Mike S.,
Myers Randall A.,
Estes James R.
Publication year - 2003
Publication title -
north american journal of fisheries management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 72
eISSN - 1548-8675
pISSN - 0275-5947
DOI - 10.1577/1548-8675(2003)023<0181:coearf>2.0.co;2
Subject(s) - electrofishing , hydrilla , micropterus , fishery , bass (fish) , environmental science , rotenone , sampling (signal processing) , abundance (ecology) , ecology , biology , aquatic plant , macrophyte , filter (signal processing) , computer science , mitochondrion , computer vision , microbiology and biotechnology
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.