Genetic Effects of Stocking on a Wild Population of Japanese Mitten Crab Eriocheir japonica.

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  • モクズガニの種苗放流が天然集団におよぼす遺伝的影響の検証
  • モクズガニ ノ シュビョウ ホウリュウ ガ テンネン シュウダン ニ オヨボス

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Abstract

Horizontal starch gel electrophoresis was used to analyze the genetical variation between Takatsu River (=stocked) and Lake Jinzai (=wild) populations of Japanese mitten crab Eriocheir japonica. Ten enzymes and 16 allozymic loci were examined using muscle, gill, and hepatopancreas tissues. Six loci, AAT-1, AAT-2, FH-2, GPI, IDHP-1, and MDH-2, were found to be polymorphic. The value of mean heterozygosity was 0.029 for the Takatsu River (=stocked) and 0.027 for Lake Jinzai (=wild) . The difference of allele frequency between these populations was not significant. Nei's genetic distance between these populations was 0.0001.These results suggest that these populations show no genetical difference at the present time.

Journal

  • Aquaculture Science

    Aquaculture Science 45 (1), 25-29, 1997

    Japanese Society for Aquaculture Science

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