摘要
肾性节是一种雄性副性结构,主要存在于爬行动物双孔亚纲Diapsida鳞龙下纲Lepidosauria,尤其是有鳞目的雄性,由肾脏的集合管前端或肾单位的远曲小管末端膨大特化而成。肾性节的细胞由柱状上皮细胞组成,胞质中充满电子致密的分泌颗粒。组织化学研究表明,肾性节呈ACP、AKP、糖原、糖蛋白、脂类和蛋白质等反应阳性,且存在种间差异。肾性节的细胞大小和超微结构具有明显的年周变化,并与生殖腺的发育密切相关。此外,某些蛇和蜥蜴的雄性幼体具有肾性节,而在某些种类的雌性也具有类似的结构。有关这一结构的生理功能尚不完全清楚,曾有学者提出几种假设:具有支持和激活精子的作用,形成交配栓,与精液形成有关或提供求爱信息素等。
Renal sexual segment （RSS）, the hypertrophied region of the distal convoluted tubule and/or the forehead of the collecting duct of kidneys in the reptiles of Diapsida Lepidosauria, especially in male individual of Squamata, is a seeondary structure of the male. The single layered epithelium of RSS consists of cylindrical cells with intensely secretory granules. Histochemieal studies indicated that RSS shows multi-positive such as ACP, AKP, glycogen, glycoprotein, lipid and protein, which expressed differences interspecies. RSS has obvious seasonal changes which are related with the development of the gonads. Furthermore, in a few snakes and lizards, the immature males have RSS, and a few females have too. The function of RSS has not been demonstrated clearly, considering it functions in maintaining sperm, forming copulatory plug, relating to form seminal fluid and/or attracting females during courtship.
出处
《四川动物》
CSCD
北大核心
2009年第5期781-784,共4页
Sichuan Journal of Zoology
基金
沈阳师范大学特聘教授专项基金的支持
关键词
蛇
蜥蜴
肾性节
结构
组织化学
功能
snakes
lizards
renal sexual segment
structure
histochemistry
function
