Ecological and population genetic clarification of geographic variation in reproductive cycle of sea urchin
| Project/Area Number |
20580193
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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 |
General fisheries
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| Research Institution | Tohoku University |
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Principal Investigator |
AGATSUMA Yukio 東北大学, 大学院・農学研究科, 教授 (50292256)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | エゾバフンウニ / 生殖周期 / 遺伝的分化 / 成長 / 年齢形質 / 水温 / ミトコンドリアDNA / 成熟 / エゾパフンウニ / 産卵期 |
|---|
| Research Abstract |
Reproductive cycle of the sea urchin Strongylocentrotus intermedius differs among sea areas in Hokkaido. This study aims to clarify genetic differences in the populations among sea areas. The reproductive cycle in the Pacific Ocean in Tohoku coincided with that in the Sea of Japan in Hokkaido. There was no significant difference in the mitochondrial DNA sequences among the sea areas, although each different reproductive cycle is closely associated with ocean current, water temperature and distribution of Saccharina kelps established since 10, 000 years ago. A rearing experiment of the sea urchins derived from the Pacific Ocean in southern Hokkaido showed their extremely low growth rate due to high water temperature, suggesting no juvenile recruitment to southern regions from central Miyagi Prefecture.
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Report
(4 results)
Research Products
(52 results)
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[Presentation] Growth and gonad development of the sea urchin Hemicentrotus pulcherrimus in an Eisenia kelp bed in the Oshika Peninsula, northern Japan2010
Author(s)
Agatsuma, Y., Toda, N., Ogasawara, M., Kinoshita, J., Watanabe, M., Matsui., T., Inomata, E.
Organizer
7th European Conference on Echinoderms
Place of Presentation
Geoscience Center, University of Gottingen, Gottingen, Germany
Year and Date
2010-10-06
Related Report
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[Presentation] 磯焼け域におけるウニ駆除と栄養塩添加によるホソメコンブ群落の造成2009
Author(s)
吾妻行雄, 鹿又郁美, 池森力, 吉田茂樹, 武内良雄, 藤島浩晃, 中島和彦, 佐野満廣, 金崎伸幸, 今井久益, 山元直樹, 金濱博樹, 松原高司, 高橋智, 磯貝辰彦, 谷口和也
Organizer
2009年度日本水産学会秋季大会
Place of Presentation
いわて県民情報交流センター・アイーナ(盛岡市)
Year and Date
2009-10-01
Related Report
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[Presentation] 養殖ワカメの密度効果2008
Author(s)
鹿又郁美, 山名淳, 伊勢修夫, 吾妻行雄, 谷口和也
Organizer
第5回東北大学バイオサイエンスシンポジウム
Place of Presentation
仙台市
Year and Date
2008-05-19
Related Report
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