摘要
本文用光镜观察了湾鳄在胚胎不同时期的皮肤发生．发现有以下几个主要特点：（１）胚胎４２．３天出现压力感受器；（２）胚胎４６．８天出现背腺及鳞间沟；（３）胚胎５６．８天出现纵嵴；（４）胚胎６５天表皮已发育成熟，由内向外可分为：生发层、中间层、α角质层和β角质层；（５）胚胎７３天（孵出）背腺成熟为无分枝的泡状腺，鳞间沟高度卷曲与折叠．最后对湾鳄皮肤发生与其他动物的异同点及背腺在系统演化中的意义进行了讨论．
The morphogenesis of dorsal skin of Crocodylus prosus was observed by light microscope.It had following characteristics:(1) The pressure receptor appeared in the embryo of the 42,3rd day;(2) The dorsal gland and furrows between scales appeared in the embryo of the 46.8th day;(3) The longitudinal ridge of dorsal skin appeared in the embryo of the 56.8th day;(4) The dorsal epidermis was well-developed and had four layers:germinal layer、middle layer、α keratin layer and β keratin layer;(5) The dorsal gland was well-developed acinar gland and the furrows was highly rolled and folded.The difference from of dermatogenesis in the other animals and meaning of the dorsal gland were also discussed.
基金
国家自然科学基金
