饰纹姬蛙早期胚胎发育的研究  

STUDIES ON EARLY EMBRYONIC DEVELOPMENT IN MICROHYLA ORNATA

作　　者：刘绍龙[1] 宋志明[1] 张家藻 何明友[1] 朱荃[1] 李勇[1] 

机构地区：[1]四川大学生物系,四川省地震局

出　　处：《四川大学学报（自然科学版）》1996年第3期323-329,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家教委"生物多样性保护生物学研究"课题启动经费资助

摘　　要：研究了饰纹姬蛙（Ｍｉｃｒｏｈｙｌａｏｒｎａｔａ）的早期胚胎发育．经雌雄成体腹腔注射ＬＲＨ－Ａ，促使其抱对、产卵．受精卵在水温２７±０．５℃的条件下进行培养．结果表明：在我国的蛙类中，饰纹姬蛙是早期胚胎发育最为迅速的种类之一；胚体纵轴伸长出现在原肠末期；在鳃循环期即可明显地观察到尾循环；出水孔的形成始于鳃盖完成时的腹中部，并逐渐移向腹后部．In mating season a number of mating pairs and individuals of Microhgla ornata were collected from mating areas and were given an injection of LRH-A. Its early embryonic development was studied under laboratory conditions at a constant temperature 27 ± 0. 5℃. Divided into 25stages,the whole process of the early embryonic development takes about 58. 5 hour and is one of the fastest among chinese frogs. During the late-gastrula stage the embryo begins to elongate along the longitudinal axis which was earllier than Rana nigromaculata, Bufo bufo gargarizans, B. raddei,Scutiger boulengeri. The tail-circulation can be observed during gill-circulation stage. Hatching takes place at the muscular-response,the single ventral spiracle can be seen at the midbody at opercular fold-completed and then it can be seen in front of the vent at the spiracle-completed.

关 键 词：饰纹姬蛙 胚胎发育 细胞 两栖类动物 

分 类 号：Q959.53[生物学—动物学]