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利用当地养殖的日本对虾作亲虾,进行了越冬培养和性腺促熟技术研究。从入池越冬水温13℃开始,每天升温05℃,至20~23℃时,恒温2天,至24℃停止升温,取出交尾雌虾放入温水池,每天按05℃升温至26℃待产。性腺发育快,产卵效果好。用镊烫法处理雌虾眼柄,比未处理眼柄的亲虾能提前7天产卵。处理过的亲虾死亡率仅为362%。结果:497尾越冬亲虾产下6980万粒受精卵,孵化率平均为708%。
Using locally cultured shrimp Penaeus japonicus as broodstock, overwintering culture and gonadal maturation technology research. From the winter temperature of 13 ℃ into the pool, the daily temperature 0.5 ℃, to 20 ~ 23 ℃, the thermostat 2 days, to 24 ℃ to stop warming, remove the copulatory females into the warm water tank, daily heating at 0 5 ℃ to 26 ℃ to be produced. Gonadal development, spawning effect. Treated with tweezers fecundity of the shank, broodstock than the untreated handle can spawn 7 days in advance. Treated broodstock mortality was only 3.62%. Results: The 497 cross overwintering broodstock produced 69.8 million fertilized eggs with an average hatching rate of 708%.