泥鳅胚胎与鱼苗发育的研究

Research on the Embryonic and Larval Growth Development of Misgurnus anguillicaupatus(Antor)

实验观察了泥鳅的胚胎与鱼苗在水温19～23℃的条件下发育的各个时期及其主要的特征。泥鳅的胚胎发育经过29个时期,鱼苗阶段为11个时期,共40个时期。卵受精后经过34小时的胚胎发育出膜成为鱼苗。出膜后的41小时鱼苗发育完成。

This article reports our research on the various stages and the corres- ponding characteristics of the embryonic and larval growth development of Misgur- nus anguillicaupatus in water at the temperature of 19～23℃. The embryonic growth development of Misgurnus anguillicaupatus has 29 stages,its larval growth development,11 stages,a total of 40 stages.For about 34 hours after the ovums fertilization,the sherm has grown up into a larva, which then breaks through the membroue of the ovum,for about 41 hours,the larva develops into a fully grown-up aduer.