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Int. J. Mol. Sci. 2011, 12(8), 4836-4849; doi:10.3390/ijms12084836

Genetic Characterization of Five Hatchery Populations of the Pacific Abalone (Haliotis discus hannai) Using Microsatellite Markers

Genetics and Breeding Research Center, National Fisheries Research and Development Institute, Gyeongsangnamdo 656-842, Korea
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Received: 22 April 2011 / Revised: 5 July 2011 / Accepted: 19 July 2011 / Published: 29 July 2011
(This article belongs to the Special Issue Advances in Molecular Ecology)
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Abstract

The Pacific abalone, Haliotis discus hannai, is a popular food in Eastern Asia. Aquacultural production of this species has increased because of recent resource declines, the growing consumption, and ongoing government-operated stock release programs. Therefore, the genetic characterization of hatchery populations is necessary to maintain the genetic diversity of this species and to develop more effective aquaculture practices. We analyzed the genetic structures of five cultured populations in Korea using six microsatellite markers. The number of alleles per locus ranged from 15 to 64, with an average of 23.5. The mean observed and expected heterozygosities were 0.797 and 0.904, respectively. The inbreeding coefficient FIS ranged from 0.054 to 0.184 (mean FIS = 0.121 ± 0.056). The genetic differentiation across all populations was low but significant (overall FST = 0.009, P < 0.01). Pairwise multilocus FST tests, estimates of genetic distance, and phylogenetic and principal component analyses did not show a consistent relationship between geographic and genetic distances. These results could reflect extensive aquaculture, the exchange of breeds and eggs between hatcheries and/or genetic drift due to intensive breeding practices. Thus, for optimal resource management, the genetic variation of hatchery stocks should be monitored and inbreeding controlled within the abalone stocks that are being released every year. This genetic information will be useful for the management of both H. discus hannai fisheries and the aquaculture industry. View Full-Text
Keywords: Pacific abalone; Haliotis discus hannai; genetic structure; hatchery populations; microsatellite loci Pacific abalone; Haliotis discus hannai; genetic structure; hatchery populations; microsatellite loci
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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An, H.S.; Lee, J.W.; Kim, H.C.; Myeong, J.-I. Genetic Characterization of Five Hatchery Populations of the Pacific Abalone (Haliotis discus hannai) Using Microsatellite Markers. Int. J. Mol. Sci. 2011, 12, 4836-4849.

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