花尾胡椒鲷的人工繁殖

Artificial propagation of yellow spotted grunt, Plectorhinchus cinctus

报导了 1 999年 5月 1 3日至 7月 5日进行的花尾胡椒鲷人工育苗技术研究。培育获得平均全长 2 4.3mm、平均体重 0 .2 9g的幼鱼鱼苗 3.0万尾 ,育苗成活率达 49.2 %。试验期间室内育苗池水温与盐度的自然变化范围分别为 2 4.0～ 30 .5℃ ,2 9.6～ 30 .5。仔、稚、幼鱼培育的饵料系列基本搭配为轮虫—卤虫无节幼体和桡足类、海水枝角类—鱼肉糜。试验发现 :花尾胡椒鲷人工育苗的死亡高峰期出现在稚鱼后期 ,38～

A technique of artificially produced young yellow spotted grunt, Plectorhinchus cinctus from 13, March to 5, July in 1999 was reported. Total 3.0×10 4 tails of young fish with the average of total length 24.3mm and body weight 0.29g were obtained in this experiment. During the test period the natural temperature and salinity of seawater used in laboratory pools were 24.0-30.5℃ and 29.6-30.6 respectively. The feed processes for the larvae, juvenile and young fish are as follows: rotifer artemia nauplii, and copepod, cladocera minced fish meat. It is showed the death peek period occurs in post juvenile at 38-44 day old.