2013 Fiscal Year Final Research Report
Study on origin of marine shallow water organisms in warm temperate and tropical regions - case study on crustacean anoumeans
| Project/Area Number |
22570101
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Kyoto University (2012-2013)
Kobe University (2010-2011) |
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Principal Investigator |
ASAKURA Akira 京都大学, フィールド科学教育研究センター, 教授 (40250138)
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| Co-Investigator(Kenkyū-buntansha) |
AOTSUKA Tadashi 首都大学東京, 理工学部, 教授 (40106604)
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| Co-Investigator(Renkei-kenkyūsha) |
ITANI Gyo 高知大学, 教育学部, 准教授 (10403867)
SHIMANAGA Motohiro 熊本大学, 沿岸域環境科学教育研究センター, 准教授 (70345057)
TAKADA Yoshitake 日本海区水産研究所, 室長 (30372006)
KOGA Tsunenori 和歌山大学, 教育学部, 教授 (50324984)
SATO Taku 西海区水産研究所, 研究員 (20455504)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 遺伝的多様性 / 熱帯 / ヤドカリ類 / 黒潮 / 親潮 |
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| Research Abstract |
To reveal origins of warm and tropical marine fauna, we examined genetic divergence using shallow water hermit crabs as model organisms. Pagurus filholi is widely distributed from Oyashio Current area to Kuroshio Current area. Population in Oyashio area has winter reproductive period with short duration, and males are very aggressive for other males. But, population in Kuroshio area has summer reproductive season and male-male competition is mild. By mtDNA COI gene, no significant difference in genetic structure, so that these difference may be attributable to phenotipic originated from different water temperature. Clibanarius virescens is tropical Indo-west Pacific species but is extended its distribution toward the north to Kanto District. We examined COXI gene and found that some populations in Southeast Asia have different genetic structure from those in temperate Japan. This suggests that some genetic divergency occurs between temperate area and tropical area.
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