2023 Fiscal Year Final Research Report
Effects of dispersal: diversification process of East Asian marine snail species
| Project/Area Number |
21K15161
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 45040:Ecology and environment-related
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| Research Institution | Toho University (2023)
Kochi University (2022)
Tohoku University (2021) |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | 分散 / 貝塚遺骸 / 埋蔵文化財 / 貝殻標本 / 形態進化 / 集団遺伝学 / 進化生態学 |
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| Outline of Final Research Achievements |
This study evaluated the genetic and morphological diversification process of marine snail species from the shallow water areas of East Asia, especially the Japanese Archipelago. Our genetic analyses showed that climate change and various ecological factors can disrupt gene flow among population and lead to the formation of genetic population structure of species with planktonic larval phase in their life history. Furthermore, morphological analyses have allowed us to understand the process of spatio-temporal morphological change in Japanese snails. These findings contribute to our understanding of the relationship between dispersal and diversification in marine species.
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| Free Research Field |
海洋生態学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の成果は、海洋生物の多様性ホットスポットである日本沿岸域における集団分化および多様化プロセスと分散の関係性について、高解像度の遺伝的解析と形態的解析から示したという点で意義がある。特に、世界自然遺産である小笠原諸島における固有貝類の進化史を捉えた研究は、今後の海洋保全の方針や、エコツーリズム等にも波及することから重要な社会的意義を持つと言える。加えて、貝塚遺骸から形態進化プロセスを示した研究は、本邦における多様な水産有用種の利用史と将来の持続性を考える点でも重要である。
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