Genetic Variability of the Largemouth Bass, Micropterus salmoides in Ehime Prefecture, Japan

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Other Title
  • 愛媛県におけるオオクチバスの遺伝的多様性
  • エヒメケン ニ オケル オオクチバス ノ イデンテキ タヨウセイ

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Abstract

Genetic variability and divergence of the largemouth bass, Micropterus salmoidesinvaded Ehime Prefecture, Japan, were surveyed by using 10 samples from seven reservoirs, based on 5 microsatellite loci. Investigation of these marker loci of the largemouth bass sample showed the difference of genetic variability from each other. The estimated heterozygosity ranged from 0.231 to 0.487. Genetic divergence among the largemouth bass samples was observed in the genotype and allele frequencies at the marker loci. Considerable genetic difference was observed within Nomura samples between 2003 and 2004, 2005 year stocks in the population pairwise FST. Relationship between geographic and genetic similarities was not observed among some samples. The results suggested that the present distribution of largemouth bass in Ehime Prefecture originated from several degree of artificial introduction. Occurrence of recent introduction of largemouth bass among the inland waters of Ehime Prefecture was also suggested. The microsatellite markers showed a potential as indicators to evaluate genetic variability and to trace genetic changes in largemouth bass.

Journal

  • Aquaculture Science

    Aquaculture Science 55 (2), 237-243, 2007

    Japanese Society for Aquaculture Science

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