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<p><i>Mizuhopecten yessoensis</i> is one of the most important aquaculture species in the Russian Far East. However, its wild population size is declining due to overfishing and habitat loss. Since the population genetic structure of this species is poorly studied in Russia, we analyzed the mitochondrial DNA non-coding region (NcR2) polymorphism and seven microsatellite loci. Genetic diversity and structure of <i>M. yessoensis</i> populations from four geographical areas of the Sea of Japan and Okhotsk were assessed. A total of 24 haplotypes were identified, with one major haplotype observed in all populations studied. All populations exhibited high levels of genetic diversity, with mean expected heterozygosity ranging from 0.612 to 0.687 and haplotype diversity ranging from 0.619 to 0.793, except for the northern samples from the Terpeniya Gulf (h = 0.47). Small but statistically significant genetic differentiation was observed between southern Posyet Gulf (Sea of Japan) and Sea of Okhotsk populations. Despite high genetic variation among the populations, low differentiation and weak geographic separation were observed, suggesting that Yesso scallops from the Sea of Japan and the Sea of Okhotsk form a single panmictic population. Our results provide valuable information for resource management and genetic monitoring of this important marine bivalve.</p>

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Population Genetic Structure of Yesso Scallop (Mizuhopecten Yessoensis) of the Russian Far East Revealed by Mitochondrial and Microsatellite Genetic Markers

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Aleksandra Yu. Khamatova,
  • Vasily V. Malyar,
  • Viktoriia D. Yagodina,
  • Evgeniia I. Bondar

摘要

Mizuhopecten yessoensis is one of the most important aquaculture species in the Russian Far East. However, its wild population size is declining due to overfishing and habitat loss. Since the population genetic structure of this species is poorly studied in Russia, we analyzed the mitochondrial DNA non-coding region (NcR2) polymorphism and seven microsatellite loci. Genetic diversity and structure of M. yessoensis populations from four geographical areas of the Sea of Japan and Okhotsk were assessed. A total of 24 haplotypes were identified, with one major haplotype observed in all populations studied. All populations exhibited high levels of genetic diversity, with mean expected heterozygosity ranging from 0.612 to 0.687 and haplotype diversity ranging from 0.619 to 0.793, except for the northern samples from the Terpeniya Gulf (h = 0.47). Small but statistically significant genetic differentiation was observed between southern Posyet Gulf (Sea of Japan) and Sea of Okhotsk populations. Despite high genetic variation among the populations, low differentiation and weak geographic separation were observed, suggesting that Yesso scallops from the Sea of Japan and the Sea of Okhotsk form a single panmictic population. Our results provide valuable information for resource management and genetic monitoring of this important marine bivalve.