| Project/Area Number |
08660234
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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 | Nagasaki University |
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Principal Investigator |
TACHIBANA Katsuyasu Nagasaki University Faculty of Fisheries, 水産学部, 助教授 (20171712)
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| Co-Investigator(Kenkyū-buntansha) |
HARA Kenji Nagasaki University Faculty of Fisheries Professor, 水産学部, 教授 (10039737)
HAGIWARA Atsushi Nagasaki University Faculty of Fisheries Professor, 水産学部, 教授 (50208419)
TSUCHIMOTO Mutsuyosi Nagasaki University Faculty of Fisheries Professor, 水産学部, 教授 (20080525)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | beta-carotene / Red sea bream / Japanese parrotfish / Spotted parrotfish / lymphocytes / rotifer / larvae / virus infection / 幼若化 / 脾臓リンパ球 / 稚魚 |
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| Research Abstract |
Red sea bream (Pagrus major) Japanese parrotfish (Oplegnathus fasciatus) and Spotted parrotfish (Oplegnathus punctatus) larvae were fed with beta-carotene supplemented rotifers or unsupplemented control rotifers for 2 4-30 days after hatch out. Results showed that survival rates of n-carotene supplemented groups of Red sea bream, Japanese parrotfish, and Spotted parrotfish larvae were higher than that of control groups. p-carotene supplemented and unsupplemented control groups exhibited similar growth in all species during this experiment.
Proliferation of spleen lymphocyte with 100mug ml^<-1> of ConA, 10 or 50mug ml^<-1> of Poke weed mitogen from beta-carotene supplemented group was higher than that of control group in Japanese parrotfish. In Red sea bream and Spotted parrotfish treated with 100mug ml^<-1> of ConA from the beta-carotene supplemented groups lymphocytes proliferated to a higher degree compared with control. Results suggested that the supplementation of beta-carotene to rotifers, might be of benefit in production of healthy and high resistive larvae against infectious disease.
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