| Project/Area Number |
23710258
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Living organism molecular science
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| Research Institution | University of the Ryukyus |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | リュウキュウスガモ / エダコモンサンゴ / 混合群落 / コユビミドリイシ / エダコモンサンゴ幼生 / カフェ酸 / 褐虫藻 / 相利関係 |
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| Research Abstract |
In this study, we examined compounds that influence facultative symbiosis between coral Montipora digitata and seagrass Thalassa hemprichii, which can be seen near Bise on the west coast of Okinawa Island. Acropora sp.1 was used as a control. We evaluated the influence of a crude extract of seagrass T. hemprichii against coral larvae. The seagrass T. hemprichii was directly harvested in Okinawa Prefecture. A crude organic extract of this material was subjected to bioassay-guided (toxicity against coral larvae) fractionation by solvent partition, ODS-HPLC, to yield caffeic acid. Morphological changes of lavae of Acropora sp.1 were induced by exposure to 0.0018 mg/ml-0.18 mg/ml caffeic acid. On the other hand, no morphological changes of lavae of M. digitata were induced at same concentration.
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