2016 Fiscal Year Final Research Report
Effects of acoustic environment in rearing tank on Japanese eel reproduction
| Project/Area Number |
25660158
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | University of Miyazaki |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | 水中音響環境 / ニホンウナギ / 性成熟 / 生殖内分泌 / 産卵 / 種苗生産 |
|---|
| Outline of Final Research Achievements |
In order to develop techniques to induce sexual maturation of Japanese eel by environmental control, we investigated the influence of acoustic environments in rearing tank on the sexual maturation of eels. We found that acoustic environment in rearing tank have more noise than those in the eel natural habitat. In the next step, we prepared eel rearing tanks which can keep quiet acoustic environment. Using the tank, we found that serum estradiol and testosterone levels were higher both in quiet acoustic tanks and in tanks running Morzart’s healing sound than those in noisy tanks. These results suggest that acoustic environments in rearing tanks should be considered to initiate sexual maturation of Japanese eel.
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| Free Research Field |
魚類繁殖生理学
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