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North American Journal of Fisheries Management Volume 23, 2003 - Issue 1
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Management Brief

Relation of Age-0 Largemouth Bass Abundance to Hydrilla Coverage and Water Level at Lochloosa and Orange Lakes, Florida

William B. Tate Department of Fisheries and Aquatic Sciences, The University of Florida, 7922 Northwest 71st Street, Gainesville, Florida, 32653, USA
,
Mike S. Allen Department of Fisheries and Aquatic Sciences, The University of Florida, 7922 Northwest 71st Street, Gainesville, Florida, 32653, USA
,
Randall A. Myers Florida Fish and Wildlife Conservation Commission, 7922 Northwest 71st Street, Gainesville, Florida, 32653, USA
,
Eric J. Nagid Florida Fish and Wildlife Conservation Commission, 7922 Northwest 71st Street, Gainesville, Florida, 32653, USA
&
James R. Estes Florida Fish and Wildlife Conservation Commission, 620 South Meridian Street, Tallahassee, Florida, USA
Pages 251-257 | Received 12 Oct 2001, Accepted 16 Apr 2002, Published online: 08 Jan 2011
 
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Abstract

Changes in electrofishing catch per hour (CPH) of age-0 largemouth bass Micropterus salmoides were examined in relation to aquatic macrophytes and seasonal water elevation at Lochloosa and Orange lakes, Florida, during the 1990s. At Lochloosa Lake, stepwise multiple regression revealed a significant positive relationship between the mean CPH of age-0 largemouth bass and the percentage of areal coverage by hydrilla Hydrilla verticallata. At Orange Lake, mean CPH was directly associated with the percentage of areal coverage by hydrilla and inversely related to summer water levels. Thus, the influence of vegetation on age-0 largemouth bass abundance was similar at both lakes, but the effects of water levels were not. Further investigations into the effects of fluctuations in water levels on age-0 largemouth bass in natural lakes are needed.

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