| Project/Area Number |
26292101
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | Fisheries Research and Education Agency |
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Principal Investigator |
Tomaru Yuji 国立研究開発法人水産研究・教育機構, 瀬戸内海区水産研究所, 主任研究員 (10416042)
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| Co-Investigator(Kenkyū-buntansha) |
山口 晴生 高知大学, 自然科学系, 准教授 (10432816)
紫加田 知幸 国立研究開発法人水産研究・教育機構, その他部局等, 研究員 (40603048)
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| Co-Investigator(Renkei-kenkyūsha) |
KIMURA Kei 佐賀大学, 低平地沿岸海域研究センター, 講師 (30612676)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
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| Keywords | 珪藻 / 死滅 / ウイルス / 光 / 栄養塩 / 沈降 |
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| Outline of Final Research Achievements |
Diatom is one of significant primary producers in marine environments. In this study, we focused on the effects of physical, chemical and viral factors on the decreasing of Chaetoceros tenuissimus which is an ecologically important diatom species in Japanese coastal waters. Using culture based physiological studies under various environments including light, salinity, nutrients and viral infections, we examined the relationships between ecological factors and diatom cell decreasing/death. Furthermore, we tested the downward flux of the cells under nutrient deficiencies. The results showed that the most important factor on the cell decreases or death would be nitrogen deficiencies. Other factors tested in this study would be relatively moderate.
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