摘要
采用逐步降低培育用水盐度、合理控制培育密度、严格掌握饵料投喂量、蚤状Ⅰ期投喂烫死的卤虫无节幼体、蛋状Ⅴ期幼体变态时投喂充足的成体卤虫等措施，提高了河蟹育苗成活率和单位水体出苗量。结果：在50Om2水体中，560只亲蟹一次出苗205.6kg，变态成大眼幼体140．6kg，成活率23．4％，平均每立方米水体出苗0.4kg。
The paper reported measures to raise the survival rate of rearlng river crablarvae and the total numbers of larvae per unit water body in the seeding pond,such as gradually decreasing the salinity of the rearlng water,reasonably controlling the rearing density,strictly keeping to the feeding arnount,feeding on boiled Nauplius of the Artemia salina in Z1and feeding on the plenty of the adult Artemia salina in the stage of Metamorphosis(Z5).
出处
《齐鲁渔业》
1999年第1期15-17,共3页
Shandong Fisheries
关键词
河蟹
育苗
密度
自残
成活率
投饵技术
river crab
seed-rearing
gradually decrease the salinity
density
