1鱼苗孵化出现异常现象的原因在鱼苗孵化过程中,提前脱膜和出现畸形胚胎等现象时有发生,严重影响出苗率。提前脱膜多发生在胚胎发育的尾鳍出现至肌肉效应期这段时间,卵膜破裂或者溶解,失去卵膜保护的胚体沉入水底而死亡。发生的原 1 fry hatching abnormalities in the reasons for the phenomenon of hatching in the fry in advance, the emergence of deformities embryos and other phenomena occur from time to time, seriously affecting the emergence rate. Early stripping occurred in the embryonic development of the caudal fins appear to the muscular effect of this period of time, the rupture or dissolution of the egg membrane, egg membrane protection lost the embryo body sinks into the water and death. The original