版纳鱼螈幼体和成体皮肤的结构  

Skin Structure of Larval and Adult Ichthyophis bannanicus

作　　者：李家洲[1] 蒙绍权[1] 李燕君[2] 贝永建[1] 谢文海[1] 李桂芬[1,2] 

机构地区：[1]玉林师范学院化学与生物学系,广西玉林537000 [2]珍稀濒危动植物生态与环境保护省部共建教育部重点实验室,广西师范大学,广西桂林541004

出　　处：《四川动物》2011年第4期573-577,共5页Sichuan Journal of Zoology

基　　金：珍稀濒危动植物生态与环境保护省部共建教育部重点实验室研究基金资助(桂科能1002K004);广西自然科学基金项目(2011GXNSFA018107)

摘　　要：采用光镜和扫描电镜,对我国特有的珍稀濒危两栖动物版纳鱼螈Ichthyophis bannanicus幼体和成体的皮肤进行形态学和组织学观察。版纳鱼螈幼体和成体的皮肤均可分为表皮、真皮疏松层和真皮致密层;皮肤中含有粘液腺和颗粒腺;在不同发育阶段或同一个体的不同部位,其皮肤的各种组成成分在结构和厚度上存在着差异:成体和幼体都是头部的表皮最厚,尾部的最薄;幼体表皮各层细胞分化不明显,几无角化现象,成体表皮的各层细胞分化明显,表层细胞明显角化;成体躯干部皮肤最厚,头部最薄,幼体则是头部皮肤最厚,尾部最薄;幼体和成体的头部皮肤都分布有大量的粘液腺,颗粒腺分布较少;幼体的躯干部皮肤则主要分布着大量颗粒腺,尾部只有颗粒腺,未见粘液腺;成体躯干部和尾部皮肤均分布有大量的颗粒腺和粘液腺。The morphological and histological observation on the skin of larval and adult Ichthyophis bannanicus,which is endemic and endangered amphibian in China,was studied by optical and scanning electron microscope.The results showed that both the skin of larval I.bannanicus and that of adult were composed of epidermis,dermis osteoporosis layer and dermal dense layer.There were mucus glands and particle glands in the skin.The various components of its skin were different in structure and thickness in both different development stages and different parts of the same individual.The head skin of the adult and the larva were the thickest,and the tail skins were the thinnest.The cell differentiation in all layers of larval skin was not obvious and there is no keratinization.The cell differentiation in adult skin was clear and the keratinization also was found.In the adult,the skin of the trunk was the thickest and the tail was the thinnest,in the larva the position was reverse.There were plenty of mucus glands,and few granular glands in the head skin of the larva and the adult.Many granular glands distributed in the trunk of the larva,and no mucus glands but granular glands existed in the tail.There were plenty of particle glands and mucus glands in the trunk and tail of the adult.

关 键 词：版纳鱼螈 幼体 成体 皮肤 结构 

分 类 号：Q954[生物学—动物学]