2013 Fiscal Year Final Research Report
Study of formation process of deep-sea demersal fish community in the Sea of Japan by phyogeographical and otolith analyses
| Project/Area Number |
22370032
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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 | 一般 |
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| Research Field |
Biodiversity/Systematics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOJIMA Shigeaki 東京大学, 新領域創成科学研究科, 教授 (20242175)
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| Co-Investigator(Kenkyū-buntansha) |
OTAKE Tsuguo 東京大学, 大気海洋研究所, 教授 (20160525)
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| Co-Investigator(Renkei-kenkyūsha) |
SHINOHARA Gento 独立行政法人国立科学博物館, 動物研究部, 研究主幹 (10280520)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 日本海 / 深海性底魚類 / 耳石 / 遺伝的分化 / 系統地理学 |
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| Research Abstract |
On the basis of nucleotide sequences of mitochondrial genes, seven species and two species groups of dominant demersal fishes of the Sea of Japan were classified into 1)species with low genetic diversity, showing no genetic deviation of the Sea of Japan population, 2) species with medium genetic diversity species showing genetic deviation of the Sea of Japan population, 3) species with large intraspecific genetic diversity showing no genetic deviation of the Sea of Japan population, 4) species with large intraspecific genetic diversity showing significant genetic deviation of the Sea of Japan population, and 5) endemic species to the Sea of Japan. Changes of Sr/Ca values in otoliths with the growth suggested that such genetic population structures were formed through the isolation of the Sea of Japan populations during the last glacial period and the presence or absence of the ontogenetic vertical migration.
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