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| 版纳鱼螈牙齿的形态及发育 | |
| 引用本文： | 李家洲,李桂芬,罗德志,蒙绍权,姚锦仙.版纳鱼螈牙齿的形态及发育[J].动物学杂志,2009,44(5):24-31. |
| 作者姓名： | 李家洲 李桂芬 罗德志 蒙绍权 姚锦仙 |
| 作者单位： | 1. 玉林师范学院化学与生物学系,玉林,537000 2. 苍梧县沙头镇二中,苍梧,543117 3. 北京大学生命科学学院,北京,100871 |
| 基金项目： | 国家保护的有益的或者有重要经济、科学研究价值的陆生野生动物名录 |
| 摘 要： | 对我国特有的濒危珍稀两栖动物版纳鱼螈(Ichthyophis bannanicus)牙齿的形态及其发育进行了研究.结果表明,版纳鱼螈牙齿发生于口腔上皮的底层细胞.一颗完整的牙齿由齿冠、纤维环和肉茎三部分构成,为同型钉状双尖齿.牙齿在上、下颌均排列成两排,每个齿位着生1～2颗牙齿.齿位数和齿数通常上颌齿多于下颌齿,上颌舌侧齿多于唇侧齿,下颌唇侧齿多于舌侧齿.随着个体的生长发育,齿位数和齿数会在颌后部增加.亚成体和成体有大量换齿或脱齿现象.牙齿从着生稀疏、功能齿和替换齿夹杂着生趋向功能齿密集整齐着生.同时,将此研究结果与其他蚓螈类进行了比较和分析. |
| 关 键 词： | 版纳鱼螈 牙齿 形态 发育 |
| 收稿时间： | 2009/2/23 0:00:00 |
| 修稿时间： | 2009/4/25 0:00:00 |
Tooth Morphology and Development of Ichthyophis bannanicus |
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| LI Jia-Zhou,LI Gui-Fen,LUO De-Zhi,MENG Shao-Quan and YAO Jin-Xian.Tooth Morphology and Development of Ichthyophis bannanicus[J].Chinese Journal of Zoology,2009,44(5):24-31. | |
| Authors: | LI Jia-Zhou LI Gui-Fen LUO De-Zhi MENG Shao-Quan and YAO Jin-Xian |
| Institution: | LI Jia-Zhou LI Gui-Fen LUO De-Zhi MENG Shao-Quan YAO Jin-Xian( Department of Chemistry , Biology,Yulin Normal University,Yulin 537000,Shatou Second Middle School in Cangwu County,Cangwu 543117, College of Life Sciences,Peking University,Beijing 100871,China) |
| Abstract: | The Yunnan Caecilian(Ichthyophis bannanicus) is the Gymnophiona species found only in China.Here we report the dentition of I.bannanicus at different developmental stages.The results show that the teeth of I.bannanicus are derived from the basal layer cells of the oral epidermis.A mature tooth has two parts linked by a fibrous ring,namely pedicel and crown.The teeth are homodont and nail-like with bicuspid.Both maxilla and submaxilla of the adult individuals have two teeth rows,and one or two teeth grow fro... |
| Keywords: | Yunnan Caecilian(Ichthyophis bannanicus) Tooth Morphology Development |
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