【摘要】 <正>青蟹Scylla serrata(Forskal)属甲壳纲十足目游泳蟹科,分布于日本、菲律宾、越南、印度等国家,我国的浙江、福建、台湾、广东、广西等省沿海均有分布。青蟹的味道鲜美,其肌肉和生殖腺富有营养,深受人们的欢迎,也是重要的养殖对象。过去,黄胜南等研究过青蟹的幼体发育,纪成林研究青蟹脱皮。Arriola等对青蟹的精子发生、幼体饲养、青蟹的生活史等进行了研究。为探索青蟹的人工养殖,我们对它的胚胎发生做了研究,将结果报道如下。更多还原

【Abstract】 The embryonic development of the-mud crab Scylla serrata (Forskal) was studied.The eggs are laid from the genital pores at the rear of the third sternum of the female and are fertilized with the spermatozoa which are pressed out from the spermatheca.The fertilized eggs are incubated at the endopodites of the pleopods.The embryonic development includes the stages of cleavage, blastula, gastrula egg-nauplius, embryo with 5 pairs of appendages, embryo with7 pairs of appendages, embryo with compoud eye pigments formation, and embryo almost ready to hatch. The cleavege evolves those from the spiral type to the superfical type.The dividing furrow can be seen from 2 cells. The gastrulae are formed through invagination. The size of the eggs increase with the embryonic development. The period of the embryonic incubation is 8-25 days and will be shortened with the rise of water temperature in the range of 18-25℃. The embryos also can develop normally while fertilized eggs are laid in a man-made incubative equipment in vitro.更多还原