淡水白鲳亲鱼室外越冬及调控下集中产卵研究

Study on the Overwintering and Lay of Colossoma Hrachypromunl Out of House

利用电厂余热水进行淡水白鲳亲鱼的室外越冬，总结出一套室外越冬保种技术和管理经验。并通过对水温及饵料质、量的调节，从而控制淡水白鲳的性腺发育和多次产卵，以达到１年１次集中产卵，提高催产率和受精率。

The technique of Colossoma Hrachypromum overwintering and parents conservation by the application of extra hot water from power plant had been summurized.The development of its sex gland and the number of its lay would be controlled through the adjustment of water temperature,The quality and quanlity of feed so as to raise the rate of its fertilization and lay and to reach the objective of one concentrative lay in each year.