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中华大蟾蜍蝌蚪变态过程中肩带与前肢的发育及骨化次序 被引量：1

Development and Ossification Sequence of the Pectoral Girdle and Forelimb during Metamorphosis of Chinese Toad(Bufo gargarizans) Tadpoles
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摘要 本文采用骨骼双染色法,对中华大蟾蜍（Bufo gargarizans）33~46期蝌蚪的肩带及前肢骨的发育和骨化次序进行了研究。结果显示,中华大蟾蜍蝌蚪的肩带从36期开始出现,39期通过肌肉与荐前椎Ⅱ、Ⅲ连接,在45期胸骨出现,肩带各结构的出现和骨化起始于肩臼窝邻近的范围;前肢骨出现及骨化的方向是从近端到远端、从轴后到轴前的。肩带和前肢骨的出现有助于缓冲无尾两栖类登陆后运动产生的振动,反映了无尾类蝌蚪在变态过程中由水栖生活到陆栖生活的适应。 In this study, development and ossification sequence of pectoral girdle and forelimb skeletons of Chinese toad（Bufo gargarizans） tadpole during stages 33﹣46 were investigated using double staining. The results showed that the pectoral girdle emerged at stage 36, and connected to presacrals Ⅱ, Ⅲ by muscles at stage 39, while sternum formed at stage 45（Fig. 1）. Chondrification and ossification of pectoral girdle elements began around the glenoid fossa; emergence and ossification of the forelimb occurred in a proximo-distal and postaxial-preaxial direction（Fig. 2, 3）. Presence of pectoral girdle and forelimb in anuran alleviates the shock of movement after landing, which reflects the adaption of anuran tadpole transformation from aquatic to terrestrial life in metamorphosis.
作者 杨飞虹 王宏元 梁刚
机构地区 陕西师范大学生命科学学院
出处 《动物学杂志》 CAS CSCD 北大核心 2015年第3期372-380,共9页 Chinese Journal of Zoology
关键词 中华大蟾蜍 蝌蚪 肩带 前肢 骨化 Bufo gargarizan Tadpole Pectoral girdle Forelimb Ossify
分类号 Q954 [生物学—动物学]
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参考文献25

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动物学杂志
2015年 第3期

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