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Spawning frequency of brood dams and sires in a marine fish stock-enhancement hatchery

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Parentage analysis, employing five hypervariable microsatellite markers, was used to follow spawning patterns of red drum Sciaenops ocellatus broodfish in two spawning tanks through most of a calendar year in a marine fish hatchery dedicated to stock enhancement. Five of six dams and all four sires spawned at least once during the year. Variation in dam and sire spawning incidence and in number of progeny produced per dam and per sire translated into reduced genetic effective size (Ne) per spawn by 40·6% in one tank and 50·8% in the other.
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Keywords: hatchery; incidence; red drum; spawning

Document Type: Research Article

Affiliations: 1: Center for Biosystematics and Biodiversity, Texas A&M University, TAMU 2258, College Station, TX 77843-2258, U.S.A. 2: Texas Parks and Wildlife Department, CCA/AEP Marine Development Center, Corpus Christi, TX 78418, U.S.A.

Publication date: 2010-09-01

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