三疣梭子蟹胚胎发育过程中生殖腺的形态
Morphology of Gonad in Embryos of Swimming Crabs,Portunus trituberculatus
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摘要: 对三疣梭子蟹胚胎切片做显微观察,至第二期卵内状幼体阶段才见形态结构明显的生殖腺。其外观囊状,内部具空腔,细胞排列成管状,开口于胚胎表面。左右两个生殖腺以管状结构相连。Abstract: Gonads were observed in the section of the second egg-zoea stage of swimming crabs,Portunus trituberculatus with a microscope.The gonads appearance is saclike,inside has a cavity,and cells arrange like a strand that opens to the surface of the embryo.One embryo has two gonads linking with a tube structure.