| Project/Area Number |
21510247
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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 |
Resource conservation science
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| Research Institution | Okinawa National College of Technology |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 保全生物 / 病気 / オオスリバチサンゴ / 宮崎県 / サンゴ / ビブリオ / エンタクミドリイシ / 新燃岳火山灰 / 細菌 |
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| Research Abstract |
We studied the coral disease-like syndrome found on the colony of Turbinaria peltata which is distributed in the temperate region of Japan, where coral reefs do not develop. On the basis of spot size and color of the syndrome this was described as a new coral disease-like syndrome, white spot syndrome(WSS). The bleached spots, where the number of zooxanthellae was decreased(29% of ordinary tissue), were roughly circular and about 1cm in diameter. Almost one third of the colonies(total of 100 colonies examined) were affected, and sometimes resulted in coral death. Isolation of bacteria collected from those coral surface, many bacteria including Vibrio were identified. Although infection experiment was done using cultured Vibrio sp. onto Okinawan Turbinaria peltata, focal bleaching was not appeared. WSS has been increasing among other coral species even including soft corals. The causative agent(s) is still unclear but bacterial infection is suggested because of its shape(circular), size(1 cm in diam.), distribution in the colony and temperature-dependent increase.
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