摘要
为了解决南方苗种少的困难及为北方增加新的养殖品种,在北方地区人工繁殖锯缘青蟹,生产苗种大量返销南方。2001年由南方购进待二次产卵膏蟹14只。在室内水泥池培育,抱卵率达42%,幼体成活率达50%。共孵化出幼体13 2万只,平均单位水体出苗(C1-C3)1100只/m3,怀卵量低与二次抱卵蟹卵质量较差有关,幼体死亡率高,主要是蜕皮不遂。
In order to solve the problem of crab spawns shortage and increase breeding variety in the north,saw-teeth crabs breeding were proceeded in Northern China and then were transfered to Southern China.14 after-incubating crabs were bought from Southern China and cultured in the indoor cement pond.The incubation rate of spawn is 42% and the survival rate of young crabs is 50%,totaling 132 000young crabs.The average rate of hatching per cubic meters (C1-C3)is 1100 pieces/m3The main reason of high death rate of young crabs is their failure of ecdysis.
出处
《水产科学》
CAS
北大核心
2003年第1期19-21,共3页
Fisheries Science
基金
辽宁省海洋渔业厅资助项目(200107)
