Regulation of the Maturation and Egg Quality in Japanese Eel

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Project title

Code/計畫編號

90農科-1.1.2-漁-F1(1)

Translated Name/計畫中文名

調控鰻魚成熟產卵與卵質之研究

Project Coordinator/計畫主持人

Ching-Fong Chang

Funding Organization/主管機關

Council of Agriculture,Executive Yuan

Department/Unit

Department of Aquaculture

Website

https://www.grb.gov.tw/search/planDetail?id=1045894

Year

2001

Start date/計畫起

01-01-2001

Expected Completion/計畫迄

31-12-2001

Bugetid/研究經費

1100千元

ResearchField/研究領域

漁業

計畫目標: 鰻魚是我國重要的養殖魚種之一, 至目前並無法得到天然的種鰻, 而且天然的鰻苗來源亦不穩定, 因此鰻魚人工催熟及幼苗培育成為重要的研究課題.目前雌雄鰻魚的人工催熟產卵、受精仍有許多的問題, 例如雄鰻精巢的成熟與精子的品質不佳、雌種鰻成熟度不易操控、成熟種鰻不容易產卵、無法順利培育鰻線幼生等諸多問題, 為了解決上述問題, 許多基礎的生殖內分泌生理資料應急迫建立.因此本研究之長期目標為建立促進日本鰻成熟產卵與授精及育苗, 並瞭解日本鰻生殖內分泌之特性.架構: 本年度著重於不同養殖年齡及環境之種鰻對人工催熟產卵之影響, 並瞭解不同年齡種鰻之生殖內分泌之特性.本計畫將分三項實驗: 不同養殖水溫對探討鰻魚人工催熟之影響、比較不同養殖年齡對鰻魚人工催熟之影響、不年齡養殖鰻之生殖內分泌之特性.預期效益: 經由本研究之推動, 預期將可建立鰻魚人工繁殖技術, 並瞭解鰻魚的基礎生殖內分泌之特性. Japanese eel, Anguilla japonica is an important cultured species in Taiwan.Mature spawners could not be obtained from wild population.The natural resource of eel larvae is even decreasing in recent years.Therefore, artificial induced maturation and fertilization, and larval rearing become important for eel culture.Several problems are still deserved to be studied such as the control of maturation in male and female eel, the quality of sperm and mature oocyte, the control of natural spawning and fertilization rate, the rearing of eel larvae, and larval nutrition.Also, it would accelerate the progress of artificial spawning and larval rearing if more information about the reproductive endocrine system in Japanese eel is provided.Therefore, the long-term objectives are to develop the routine techniques on the artificial induced maturation, spawning and larval rearing.The hypothalamo-pituitary-gonadal axis is also investigated.The objectives this year are to induce maturation and spawning, and also study the reproductive hormones in cultured Japanese eels.Three experiments will be conducted.The effect of rearing temperatures on the induction of maturation the effects eels with different age on the induction of maturation the characteristics of the reproductive hormones in eels with different ages.The research data will provide valuable information on the reproductive endocrine system in eels and promote eel aquaculture.

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Regulation of the Maturation and Egg Quality in Japanese Eel

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