锯缘青蟹卵膜变化与卵子附着研究

利用光镜和电镜观察了锯缘青蟹成熟卵及其受精后卵膜变化和卵子附着特征。锯缘青蟹成熟卵子卵膜有三层即外层、内层和质膜。卵子产出后，无论受精与否，外层和内层卵黄膜形成壳膜，与卵子附着有关。刚产出的卵子卵膜具有溶胶性和延展性，卵子与刚毛表面之间或卵子之间接触便粘在一起，由于刚毛摆动和卵子的重力作用，形成卵柄或卵索。卵子受精后，发生皮层反应形成受精膜。由壳膜和受精膜构成的孵化膜为初级卵膜，保护胚胎发育，直至

Studies on the egg membrane variation and egg attachment in Scylla serrata

The egg membrane variation of the matured and fertilized eggs and attachment of the egg in Scylla serrata were studied with light-microscope and electron-microscope in this paper. The matured egg has three layers egg membrane, they are outer layer, inner layer of the vitelline membrane, and egg plasma membrane. No matter the egg fertilized or not, the outer and inner layers could form chorion after the egg spawned, and the chorion had glue and extension. When the egg contacted with the setae of the plaopods or other eggs, they attached each other, and formed egg stalk or funiculus by the setae swaying and its gravity action. Eventually the eggs attached to the parent till larvae hatched. After the egg fertilized, it Underwent cortical reaction and formed fertilization membrane. The hatching membrane which was composed of chorion and fertilization membrane was the primary egg membrane, and protected the embryo development from harm material till the larva hatched.