环境条件对中国对虾交尾影响的试验观察↑（*）

本文报告了在室内条件下中国对虾雄性生殖系统不同部位精子形态、激活反应及外界环境对对虾交尾影响等的试验观察。雄性生殖系统被分为３部分：精巢（Ｔ）、输精管和精荚（ＴＡ）；输精管又分为前、中、后３段，其中的前（ＡＶＤ）、中（ＭＶＤ）、后（ＰＶＤ）３部分以及精巢和精荚被分别匀浆取样镜检，观察精子形态。结果表明：中国对虾雄性精巢、输精管、精荚及雌虾纳精囊内精子的形态、对卵水的激活反应能力有所差异，是一逐渐成熟过程；雄虾具有多次交尾能力，不同环境条件对中国对虾的交尾影响明显；当雌虾比例较高时交尾率也高；不同对虾密度对交尾影响不明显

An observation on the effect of environmental conditions on mating of shrimp Penaeus chinensis

The morphology,activation of the sperm isolated from different parts of the male reproductive system and the effects of some conditions on the mating behavior of shrimp(Penaeus chinesis) were tested.The male reproductive system consists of 3 parts:testes,vas deferens and terminal ampoule;the vas deferens consists of poster,middle and terminal part. The results show that the shapes of cells in the sections above are different, and their activations to egg water are different that the process is going on gradually.The male shrimp are able to mate more than one time and the highest mating rate was 125%. The concrete tank is more helpful for shrimp to mate than plastic tank that the former mating rate exceeded 100% and the latter only 16.7%. The penetration or color of plastic tank can affect the mating rate that the white one was 5.54% only but the black one 27.7%. The mating rates are different when shrimp density changes that it was 80% in 0.2/m 2 and 100% in 6/m 2 . The sexual proportions have significant effects on the mating of P.chinensis,and so does the environmental conditions.