Genetic factors in broodstock management for seed production

Genetic factors in broodstock management for seed production Reviews in Fish Biology and Fisheries 13: 177–185, 2003. © 2004 Kluwer Academic Publishers. Printed in the Netherlands. N. Taniguchi Department of Applied Population Genetics, Graduate School of Agricultural Science Tohoku University, Tutumi-dori, Amamiya-cho, Aobaku-ku, Sendai, 981-8555, Japan Contents Introduction page 177 Molecular methods for determining genetic composition 178 Microsatellite DNA markers for evaluating genetic divergence 178 Genetic variability in wild and cultured stocks 178 Genetic effects of hatchery stock on wild populations 179 Inbreeding in domesticated broodstock 180 Population level Individual level Preserving and enhancing genetic variability 181 Effective population size Mixing seed from different spawning days Minimal kinship selection Pedigree analaysis of spawners DNA-marker assisted broodstock management 183 Conclusion 183 References 183 Introduction by selective breeding and inbreeding (Allendorf and Ryman, 1987; Gjedrem et al., 1988). Consequently Artificial breeding and rearing of early stages of the hatchery produced fish represents gene pools that economically important animals in hatchery followed are different from those of the wild populations. by their release in the sea for ranching is becoming Reproductive mixing of the natural and hatchery- increasingly popular. Massive releases of hatchery fish produced stocks can potentially modify the genetic and shellfish have however raised concerns about the composition Reviews in Fish Biology and Fisheries Springer Journals

Genetic factors in broodstock management for seed production

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Kluwer Academic Publishers
Copyright © 2003 by Kluwer Academic Publishers
Life Sciences; Freshwater & Marine Ecology; Zoology
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