2009 Fiscal Year Final Research Report
Bioactive compounds that regulate downstream migration of the sockeye salmon Oncorhynchus nerka
| Project/Area Number |
19380118
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fisheries chemistry
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| Research Institution | Utsunomiya University |
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Principal Investigator |
YANAGISAWA Tadashi Utsunomiya University, 農学部, 教授 (90134262)
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| Co-Investigator(Kenkyū-buntansha) |
AZUMA Teruo 独立行政法人水産総合研究センター, 中央水産研究所, 室長 (90360768)
IIGO Masayuki 宇都宮大学, 農学部, 准教授 (10232109)
NIHEI KenーIchi 宇都宮大学, 農学部, 准教授 (10307209)
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| Project Period (FY) |
2007 – 2009
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| Keywords | サケ科魚類 / 回遊 / 降河行動 / 天然生物活性物質 / ホルモン / 脳 / 下垂体 / 甲状腺 |
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| Research Abstract |
Regulatory mechanisms by bioactive compounds of down-stream migration in the sockeye salmon (Oncorhynchus nerka) were investigated. Molecules involved in the regulation of the hypothalamo-pituitary-thyroid axis were selected as targets. cDNAs encoding thyrotropin-releaseing hormone (TRHa and TRHb), 4 subtypes of TRH receptor (TRHR1, TRHR2a, TRHR2b, and TRHR3), and deiodinase type II were cloned and the sites of expression were demonstrated by RT-PCR. These results indicate that the hypothalamo-pituitary-thyroid axis plays important roles in the regulation of down-stream migration of the sockeye salmon.
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[Journal Article] Lack of circadian regulation of in vitro melatonin release from the pineal organ of salmonid teleosts.2007
Author(s)
Iigo M, Abe T, Kambayashi S, Oikawa K, Masuda T, Mizusawa K, Kitamura S, Azuma T, Takagi Y, Aida K, Yanagisawa T
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Journal Title
General and Comparative Endocrinology 154
Pages: 91-97
Peer Reviewed
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