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作 者:毛国民[1] 楼宝[1] 骆季安[1] 史会来[1] 辛俭[1] 郑代明[1] 史海东
机构地区:[1]浙江省海洋水产研究所,舟山316100 [2]浙江普陀区海洋与渔业局,舟山316100
出 处:《渔业现代化》2008年第1期36-38,31,共4页Fishery Modernization
基 金:浙江省科技计划项目(2006C22038)
摘 要:试验研究了舟山牙鲆人工培育及促熟催产中的技术措施。采用自然海区捕获的牙鲆亲鱼,逐年筛选、精心培育,共获得健康的2—4龄成熟亲鱼300尾(雄鱼200尾、雌鱼100尾),体重1000~5000g。在自然产卵和外源激素HCG(1500IU/kg)及LHRH—A3(5μg/kg)的作用下(雄鱼减半),共采卵536.2×10^4粒,上浮率51.3%,受精率69.5%,孵化率84.2%。与自然产卵相比,激素催产产卵数量多,受精率和孵化率相对偏低:而自然产卵受精率和孵化率高,但产卵不够集中且数量相对较少。In this paper, broodstock cultivation and artificial propagation technique of ZhouShan Flounder ( aralichthys olivaceus ) were studied. Three hundred 2 -4 years matured broodstock (female 200, male 100) were obtained from natural sea area by effective selecting gradually, that the body weight were varied between 1 000 g and 5 000 g. By the method of spawning naturally and injecting the hormone HCG ( 1500 IU/ kg) and LHRH-A3 (5μg/kg) in female broodstock, but HCG and LHRH-A3 halved in male broodstock, 536. 2 × 10^4 eggs were gained. The float-rate, fertilization-rate, and hatch-rate were 51.3% , 69.5% , and 84.2% respectively. Compared with natural spawning, there were more eggs by injecting the hormone, while the fertilization-rate and hatch-rate were lower. Though the fertilization-rate and hatch-rate were high, natural spawning had fewer eggs and finished time after time.
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