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Spatial and Temporal Variation in Electrofishing Catch Rates of Three Species of Black Bass (Micropterus spp.) from Normandy Reservoir, Tennessee

1999; Wiley; Volume: 19; Issue: 2 Linguagem: Inglês

10.1577/1548-8675(1999)019 2.0.co;2

1548-8675

Steven M. Sammons, Phillip W. Bettoli,

Marine and fisheries research

North American Journal of Fisheries ManagementVolume 19, Issue 2 p. 454-461 Article Spatial and Temporal Variation in Electrofishing Catch Rates of Three Species of Black Bass (Micropterus spp.) from Normandy Reservoir, Tennessee Steve M. Sammons, Corresponding Author Steve M. Sammons [email protected] U.S. Geological Survey Biological Resources Division Tennessee Cooperative Fishery Research Unit, Tennessee Technological University, Box 5114, Cookeville, Tennessee, 38505 USAThe Unit is jointly sponsored by Tennessee Technological University, the U.S. Geological Survey, and the Tennessee Wildlife Resources Agency.Corresponding author: [email protected]Search for more papers by this authorPhillip W. Bettoli, Phillip W. Bettoli U.S. Geological Survey Biological Resources Division Tennessee Cooperative Fishery Research Unit, Tennessee Technological University, Box 5114, Cookeville, Tennessee, 38505 USAThe Unit is jointly sponsored by Tennessee Technological University, the U.S. Geological Survey, and the Tennessee Wildlife Resources Agency.Search for more papers by this author Steve M. Sammons, Corresponding Author Steve M. Sammons [email protected] U.S. Geological Survey Biological Resources Division Tennessee Cooperative Fishery Research Unit, Tennessee Technological University, Box 5114, Cookeville, Tennessee, 38505 USAThe Unit is jointly sponsored by Tennessee Technological University, the U.S. Geological Survey, and the Tennessee Wildlife Resources Agency.Corresponding author: [email protected]Search for more papers by this authorPhillip W. Bettoli, Phillip W. Bettoli U.S. Geological Survey Biological Resources Division Tennessee Cooperative Fishery Research Unit, Tennessee Technological University, Box 5114, Cookeville, Tennessee, 38505 USAThe Unit is jointly sponsored by Tennessee Technological University, the U.S. Geological Survey, and the Tennessee Wildlife Resources Agency.Search for more papers by this author First published: 08 January 2011 https://doi.org/10.1577/1548-8675(1999)019 2.0.CO;2Citations: 32 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Largemouth bass Micropterus salmoides, smallmouth bass M. dolomieu, and spotted bass M. punctulatus were sampled by electrofishing in the spring and fall for 6 years in Normandy Reservoir, Tennessee, to assess spatial and seasonal differences in abundance. Bass were collected each season from 40 transects stratified among the following habitats: riprap, rubble, gravel, mixed substrate, and coves. A randomized-block design analysis of variance (ANOVA) was used to partition variation by habitat and year. Abundance was greatest in riprap habitats for largemouth bass and smallmouth bass in spring samples. Abundance was greatest in rubble habitats for spotted bass in spring samples, but in only 2 of 6 years. Abundance of largemouth bass and spotted bass was lowest in gravel habitats and cove habitats, respectively; smallmouth bass abundance was uniform and consistently low in all nonriprap habitats. Abundance trends among habitats in fall samples were similar to spring samples for all three species. Gravel habitats supported the smallest and youngest individuals for all species in both seasons. Catch rates of largemouth bass and spotted bass were lower in fall than spring, whereas catch rates of smallmouth bass were higher in fall than spring. Mean total lengths were smaller in fall samples for all three species. Stratifying samples across habitats identified specific habitats that contributed high variability to overall estimates of density; by allocating more samples to those habitats, variance can be reduced. Managers designing electrofishing surveys to obtain a random sample of black bass should be aware that catch rates from electrofishing surveys vary due to different habitat uses by different sizes and species of black bass. References C. Annett, J. Hunt and E. D. 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