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斑节亲虾的越冬促熟 广东养殖斑节对虾的亲虾大部分靠进口,价格贵,且有亲虾带病毒,引起虾病流行。汕头水产所1991年冬以本地亲虾资源——鱼池斑节对虾,进行越冬促熟试验:1991年9月26日开始由近郊鱼池进虾,未见性腺发育;在水池加遮光面,除盖彩条布外,还加黑纱布一层。水温由23℃升至29℃,每天换水30—50％,并加强排污。投饲以蛤肉、蟹肉为主。试验结果:此次在水泥池,亲虾交配率相当高,可全部受精。在以往生产实践中,在催熟的室内弱光下,亲虾交配率很低,既要催熟、
Spotted broodstock overwintering and promoting mature Guangdong Penaeus monodon spotted most of the imports, the price is expensive, and a pro-shrimp virus, causing shrimp epidemics. Shantou Institute of Fisheries in the winter of 1991 to the local broodstock resources - pond fish pond shrimp, overwintering and ripening test: September 26, 1991 began to shrimp from the pond near the pond, no gonadal development; in the pool plus shading, except cover Color cloth, but also add a layer of gauze. Water temperature rose from 23 ℃ to 29 ℃, 30-50% water change every day, and to enhance sewage. Feeding to clams, crab-based. Test results: This time in the cement pool, broodstock mating rate is quite high, can be fully fertilized. In the past production practice, in ripening indoor weak light, the mating rate of broodstock is very low, it is necessary to ripening,