克氏原螯虾人工诱导繁殖的初步研究

Preliminary Studies on Artificial Induction Breeding Parent Prawn of Procambarus clarkii

为提高克氏原螯虾育苗过程中亲虾的成活率,利用福尔马林、高锰酸钾、食盐、聚维酮碘和溴氯海因对购进的亲虾进行消毒试验,结果表明:经上述5种常用药物浸泡消毒后,亲虾成活率分别比对照组提高25%、40%、5%、10%和15%,对亲虾采用高锰酸钾消毒效果较好;为提高克氏原螯虾亲虾的抱卵率,采用盐水诱导、雌虾去单侧眼柄诱导、盐水诱导+雌虾去眼柄双重诱导3种不同人工诱导方式诱导亲虾,促使其性腺发育,试验结果显示,经3种诱导方式诱导的亲虾抱卵率分别比对照组提高20%、31%和39%,双重诱导的平均产卵率高于单因子诱导。

In order to improve parent prawn survival rate of Procambarus clarkia during the period of breeding larvae, disinfection test was conducted with five drugs（Formalin, KMnO4, NaCl, PVC-I, Bromine Chlorine Hydantoin ）to Procambarus clarkia. The results indicated that parent prawn survival rate was improved 25% ,40%, 5%, 10%, 15% than that of the control groups by immersion disinfection respectively. According to results of the trial, KMnO4 disinfectants had better effect to parent prawn. In order to improve parent prawn egg-carrying capability, artificial induction was conducted by salt water, single- eyestalk ablation of female prawn, double induction （salt water ＋ eyestalk ablation）to promote gonadal development of Procambarus clarkia. The results showed that parent prawn egg-carrying capability were improved 20%, 31%, 39 % respectively than that of the control groups. Egg-carrying capability of double induction was higher than that of single-factor induction, induction effect was obvious.