一、前言莫桑比克罗非鱼(Tilapia mossambica)是一种属口孚化的鱼类,雌鱼把受精卵含在口腔中进行孚化,待仔鱼卵黄囊全部消失,并能独立生活,这时,雌鱼才把它们从口中放出(一般需要5—7天孚化,半个月左右从口中放出)。因此,它们的孚化率和成活率都很高。若将其受精卵从雌鱼口中取出,用自来水进行人工孚化时,则几乎都于孚化前死亡。我们曾用奠桑比克罗非鱼的胚胎做材料,研究其遗传变异问题,由于人工孚化问 Foreword Mozambique Tilapia mossambica is a species of the fossilized fish, the female fertilized eggs contained in the mouth of the corpuscles, until all the yolk sac larvae, and can live independently, then, The female just released them from their mouths (usually takes 5-7 days of fugitives, half an month or so from the mouth release). As a result, their rates of penetration and survival are high. If the zygote is removed from the female’s mouth and artificial water is used in tap water, almost all of the zygotes will die before the fugitive. We used embryos from tilapia tilapia as materials to study the genetic variation. As a result,