绢丝丽蚌胚胎发育的研究

基金项目:

湖北省重点攻关项目951B1107

THE EMBRYONIC DEVELOPMENT OF LAMPROTULA FIBROSA

摘要: 绢丝丽蚌卵为均黄卵,受精卵在雌蚌外鳃中进行胚胎发育,其卵裂为不等完全卵裂。在秋季自然常温(水温变幅为24-8℃)时,胚胎发育历时51d,经过卵裂期、原肠期,发育为具有透明原壳、壳钩、闭壳肌丝、内足丝、刚毛和外足丝的成熟钩介幼虫。胚胎发育的不同时期与外鳃特征具相关性。
- 绢丝丽蚌 /
- 胚胎发育 /
- 钩介幼虫
Abstract: This paper deals with the embryonic development of Lamprotula fibrosa.The fertilized eggs developed in the outer gill of the female. The cleavage wasunequal. When the natural water temperature ranged between 24-8℃, the embryonicdevelopment took 51 days. The fertilized eggs developed into mature glochidia afterthe cleavage and gastrula periods. The mature glochidia had transparent shells, hooks,thread of adductor muscle, inner byssus, setae and outer byssus. There were relationsbetween different stages of the embryonic development and the character of the outergill of the female.
- Lamprotula fibrosa /
- Embryonic development Glochidia

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