Current situation and future issues of DNA studies of submarine caves of the Ryukyu Islands

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  • Iguchi Akira
    Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology (AIST)
  • Mizuyama Masaru
    Graduate School of Engineering and Science, University of the Ryukyus
  • Yorisue Takefumi
    Integrative Aquatic Biology, Graduate School of Aguricultural Science, Tohoku University
  • Fujita Yoshihisa
    Okinawa Prefectural University of Arts

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Other Title
  • 遺伝子解析による琉球列島の海底洞窟性生物群集の多様性と集団形成・維持機構に関する研究の現状と今後の課題
  • イデンシ カイセキ ニ ヨル リュウキュウ レットウ ノ カイテイ ドウクツセイ セイブツ グンシュウ ノ タヨウセイ ト シュウダン ケイセイ ・ イジ キコウ ニ カンスル ケンキュウ ノ ゲンジョウ ト コンゴ ノ カダイ

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<p>In the submarine caves of the Ryukyu Islands, the existence of many non-described species has been indicated in field surveys. To estimate the magnitude of biodiversity in the submarine caves, application of genetic analyses would provide a promising approach. Genetic analysis by DNA barcoding based on mitochondrial cytochrome c oxidase subunit I (COI) is informative for the study of submarine caves because the data of COI region have been accumulated in many marine animals. Also, in order to understand the formation process of communities of submarine caves, population genetic approaches would be useful to evaluate the connectivity patterns among submarine caves which are not continuously distributed along the Ryukyu Islands. In addition, utilization of high-throughput sequencing technology (e.g., environmental DNA (eDNA) analysis) would be also powerful for the ecological studies of submarine caves of the Ryukyu Islands. We discuss the current situation of genetic analyses in the submarine caves of the Ryukyu Islands and propose the prospects of genetic analyses for future studies.</p>

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