| Project/Area Number |
16H05621
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
NAKAJIMA Yuichi 沖縄科学技術大学院大学, 海洋生態物理学ユニット, 研究員 (50581708)
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| Co-Investigator(Kenkyū-buntansha) |
中村 雅子 東海大学, 海洋学部, 准教授 (50580156)
酒井 一彦 琉球大学, 熱帯生物圏研究センター, 教授 (50153838)
御手洗 哲司 沖縄科学技術大学院大学, 海洋生態物理学ユニット, 准教授 (80567769)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 海洋生態 / 海洋保全 / 環境 |
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| Outline of Final Research Achievements |
Degradation of reef-building coral populations has been reported in various regions of the world. In Japan, several coral species inhabit the northern limit of the coral-distribution area. Therefore, even slight environmental disturbances can cause the local extinction of coral populations. Here, we conducted seascape genetic and genomic analyses of coral populations in the Northwest Pacific region, including Japan, to understand the mechanism of coral population maintenance. We focused on reproductive characteristics and the relationship between genotypes and phenotypes at small geographic scales. We constructed a molecular phylogenetic tree using the RAD-Seq data to assess species diversity and proposed the necessity for further research on coral taxonomy. Furthermore, we conducted a population genomic analysis to clarify the population genetic structure among the regions and elucidated the recruitment patterns of coral larvae with the results of ocean current simulation analysis.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では人為的撹乱によりサンゴの消失が懸念されている北西太平洋域において、サンゴの集団遺伝学、集団ゲノム学解析を中心に研究を進めた。異なる空間的、時間的スケールに着目したことで、サンゴの集団遺伝学に留まらず、繁殖生態学、分類学、海洋物理学など、多岐にわたる分野に関連する成果を得ることができた。これらの成果はサンゴ個体群の動向を予測する上で重要であることから、沿岸生態系において喫緊の課題となっているサンゴの保全にも貢献することが期待される。
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