Mortality of Palmetto bass following catch-and-release angling

North American Journal of Fisheries Management
By:  and 

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Abstract

Palmetto bass (Striped Bass Morone saxatilis x White Bass M. chrysops) have been stocked into reservoirs in the southeastern USA since the late 1960s and have gained widespread acceptance as a sport fish. These fisheries are growing in popularity and catch-and-release (CR) fishing is commonplace; however, there is a dearth of information on CR mortality of palmetto bass. We experimentally angled palmetto bass (n = 56; >373-mm TL) in a Tennessee reservoir using traditional angling gear in water temperatures ranging from 13 °C to 32 °C. Ultrasonic transmitters equipped with floats were externally attached to fish, which were released immediately and tracked multiple times within 10 d of release. Mortality was negligible (3.6%) in fall and spring at cool water temperatures but was high (39.3%) in summer when water temperatures exceeded 26 °C. The best logistic regression model based on Akaike's information criterion for small sample sizes scores relied on water temperature alone to predict CR mortality of palmetto bass; there was little support for other models that included all possible combinations of the six other predictor variables we tested. Palmetto bass in our study experienced lower CR mortality than Striped Bass in other systems, but CR mortality rates for palmetto bass that approach or exceed 40% during summer are still problematic if the goal is to maintain fishing quality.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mortality of Palmetto bass following catch-and-release angling
Series title North American Journal of Fisheries Management
DOI 10.1080/02755947.2013.812584
Volume 33
Issue 4
Year Published 2013
Language English
Publisher American Fisheries Society
Publisher location Lawrence, KS
Contributing office(s) Coop Res Unit Atlanta
Description 5 p.
First page 806
Last page 810
Online Only (Y/N) N
Additional Online Files (Y/N) N