【作者】 王一农； 顾小英； 尤仲杰； 黄来亚； 杨茂朝；

【Author】 Wang Yinong Gu Xiaoying You Zhongjie Huang Laiya Yang Maochao (Fisheries Dep.,Ningbo University,Ningbo 315211)

【机构】 宁波大学水产系；

【摘要】 本文提出了泥螺室内人工育苗各阶段的技术措施,并就如何提高卵群的孵化率、几种药物在育苗中的应用作了扼要讨论。在人工育苗过程中,0．28—0．9(×10^-6)高锰酸钾,或5—9(×10^-6)福尔马林处理卵群, 可明显提高孵化率,对卵群膜的溶解有促进作用,并可提高卵群孵化的同步性。在面盘幼虫浮游期及匍匐期的培养过程中,采用0．5—1(×10^-6)的高锰酸钾或5—10(×10^-6)福尔马林可以有效地减少育苗水池中的有害微小生物。更多还原

【Abstract】 Bullacta exarata （Philippi） is monoecious,reproduction is by crossfertilization.The re- produce period is from the end of March to the last ten-days of November along the coast of Zhejiang Province.The fertilized egg is protected by an egg-capsule membrane.After cleav- age,it is developed to gastrula,then trochophora larva,which incubates at the viliger larva stage.During artificial spats-rearing,potassium permanganate [0.28-0. 9（×10⁶）]can in- crease hatching rates.During viliger and pediveliger rearing,potassium permanganate [0.5-1 (×10^-6)]or formalin[5-10(×10^-6)] can reduce the amount of destructive microbes and an- imalcules.In the pediveliger stage,it must put in adherent sea-mud. This paper presents artifical spats-rearing technology in various stages,suggests how to increase hatching rates and discusses the drugs during the rearing period.更多还原