Date of Award

5-3-2013

Document Type

Thesis

Degree Name

Biology, MS

First Advisor

Ronald Johnson

Committee Members

Martin Huss; Thomas Risch; Virginie Rolland

Abstract

Several Arkansas reservoirs have been stocked with Florida largemouth bass (FLMB; Micropterus salmoides floridanus) for decades given that FLMB have been reported to have superior growth characteristics when compared to the native northern largemouth bass (NLMB; Micropterus salmoides salmoides), and therefore improve recreational and sport angling. In this study, 1,350 largemouth bass fin clips were sampled for DNA analysis from seven Arkansas reservoir bass populations to determine levels of FLMB introgression among populations, along with investigating relative weight calculations between phenotypes. Overall, Arkansas reservoirs varied widely in FLMB incorporation. Reservoirs subjected to renovation with rotenone treatment and subsequent stockings of FLMB had the highest frequencies of FLMB alleles, whereas reservoirs stocked with FLMB on top of a resident NLMB population had the lowest frequency of FLMB alleles. There was no evidence for a heterotic effect, nor evidence of outbreeding depression between FLMB and NLMB.

Rights Management

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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