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<p>Since the Shimokita Peninsula encompasses four geological provinces representative of the Japanese archipelago, it can be considered a microcosm of the geological history of the Japanese archipelago. A freshwater operculate snail species <i>Fukuia ooyagii</i> is endemic to the Shimokita Peninsula, Japan. To understand how historical geologic events have influenced the genetic structure of the species, we conducted a molecular phylogeographic investigation using mitochondrial COI and 16S rRNA genes alongside nuclear SNP analysis via MIG-seq. Our findings reveal three major genetic groups corresponding to the north, middle, and south regions of the peninsula. These groups exhibit distinct haplotypes and population structures shaped by past geological transformations. The observed genetic diversity and migration patterns provide insights into the species’ long-term persistence and dispersal mechanisms. This study contributes to the broader understanding of how geological changes impact the evolutionary dynamics of endemic species, with valuable implications for the geological history of the Japanese archipelago.</p>

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Molecular phylogeographic analysis of the semi-aquatic freshwater operculate snail Fukuia ooyagii (Pomatiopsidae), endemic to the Shimokita Peninsula, Japan

  • 期刊论文

  • 发表日期：

    2025年7月28日

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  • Takashi Kitano,
  • Akira Ooyagi,
  • Kazuo Umetsu

摘要

Since the Shimokita Peninsula encompasses four geological provinces representative of the Japanese archipelago, it can be considered a microcosm of the geological history of the Japanese archipelago. A freshwater operculate snail species Fukuia ooyagii is endemic to the Shimokita Peninsula, Japan. To understand how historical geologic events have influenced the genetic structure of the species, we conducted a molecular phylogeographic investigation using mitochondrial COI and 16S rRNA genes alongside nuclear SNP analysis via MIG-seq. Our findings reveal three major genetic groups corresponding to the north, middle, and south regions of the peninsula. These groups exhibit distinct haplotypes and population structures shaped by past geological transformations. The observed genetic diversity and migration patterns provide insights into the species’ long-term persistence and dispersal mechanisms. This study contributes to the broader understanding of how geological changes impact the evolutionary dynamics of endemic species, with valuable implications for the geological history of the Japanese archipelago.