Abstract
Striped bass is the subject of important commercial and sport fisheries in North America. The Roanoke River drainage—especially Smith Mountain Lake, Leesville Lake, and Kerr Reservoir—has popular recreational striped bass fisheries. After construction of five hydroelectric dams, populations became landlocked, declined, and have been supplemented by stocking. A key basis for responsibly augmenting populations is to characterize genetic variation and incorporate the findings into responsible hatchery and stocking practices. Genetic variation at 12 microsatellite DNA loci was evaluated among 837 striped bass representing 16 collections across the native range; populations from rivers in South Carolina, North Carolina, Chesapeake Bay, and Hudson River were screened to provide context for assessing genetic structure within the Roanoke system. Analysis of population genetic differentiation showed landlocked Roanoke River striped bass to be distinctive. Subject to genetic isolation, high M ratios, and relatively low Ne estimates suggest loss of genetic variation, and relatedness analysis showed heightened frequencies of related individuals. These insights into population genetics, demographics, and existing guidelines for broodstock acquisition and mating designs can inform genetically cognizant hatchery management and stocking for striped bass in the Roanoke River drainage. In particular, we recommend the use of larger numbers of breeders and factorial mating designs to increase the genetic diversity of propagated striped bass stocked within the Roanoke River drainage.
Funder
Virginia Department of Game and Inland Fisheries
Subject
Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics
Reference84 articles.
1. Economics of recreational fisheries for inland striped bass and hybrid striped bass;Whitehead;Am. Fish. Soc. Symp.,2013
2. Freshwater Fishes of Virginia;Jenkins,1994
3. The striped bass (Roccus saxatilis);Raney;Bull. Bingham Oceanogr. Collect. Yale Univ.,1952
4. A brief history of inland striped bass management;Van Horn;Am. Fish. Soc. Symp.,2013
5. Seasonal Movements of Striped Bass Contingents of Long Island Sound and the New York Bight
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献