| Project/Area Number |
26450285
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Aquatic life science
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| Research Institution | Hiroshima Institute of Technology (2016-2017)
Ehime University (2014-2015) |
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Principal Investigator |
Miura Chiemi 広島工業大学, 環境学部, 教授 (90518002)
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| Research Collaborator |
KITAMURA Shu , 大学院生
HAYASHI Daichi , 大学院生
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 配偶子形成 / 成長 / 成長ホルモン / エストラジオール17β / 生殖巣 / 性成熟 / ニホンウナギ / 体細胞 / 精巣 / 卵巣 |
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| Outline of Final Research Achievements |
Relationship between somatic growth and germ cells are unknown. In this study, we checked the growth in male and female Japanese eels, and the expression of growth control factor in pituitary gland, liver and gonad. The results showed that, in both sexes, the maturity progressed with somatic growth. Also, a correlation with the expression of the growth control factor was shown.
In addition, the results suggested a possible role for the sex hormone, 17β-estradiol as one of the growth control factors, because the expression of growth control factor in the ovary varied with sex hormone in an in vitro experiment. The removal of gonad of the tilapia affected its growth. Treatment of gonadectomized fish with sex hormone influence its growth, and these effects are dependent on the stage of the gonad.
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