Epididymis of the Lizard <i>Eutropis carinata</i>: A Light Microscopic and Ultrastructural Seasonal Study

Author:

Aranha Ivan,Bhagya M.,Sagar B. K. Chandrashekar

Abstract

The epididymis of the lizard Eutropis carinata can be divided into four regions viz., an initial segment (extra testicular) Efferent ductules (Eds) and three regions, the anterior region, a broad middle, and a narrow posterior, comparable to the caput, corpus, and cauda epididymidis of mammals. The anterior region of the epididymis is closely associated with a whitish initial segment (extra testicular), the Efferent ductules (Eds). The epididymal wall consists of an epithelial layer lining the lumen resting on a basement membrane surrounded by four to five layers of smooth circular muscles, a layer of connective tissue, and a layer of serosa. The ultrastructure study of the initial segment of epididymis the Eds during breeding season discloses four cell types in its epithelium viz., ciliated, non-ciliated, Apical-Mitochondria Rich Cells (AMRC), and basal cells. The anterior, middle, and posterior regions of the epididymis show five different cell types namely principal, basal, AMRC, narrow, and clear cells. Ciliated and non-ciliated cells are limited to the initial segment of the epididymis while, principal, narrow, and clear cells are found in the rest of the three regions of the epididymis. Basal and AMRC are found in all four regions. AMRCs are the most abundant cell type in the initial segment while principal cells are the major components of the epithelial lining of the remaining regions of the epididymis. During the non-breeding season, all the cell types are present but with regression and altered cytology of the cells without any sign of cellular activity in the different regions of the epididymis. During the breeding season, even the circulating testosterone levels are significantly higher compared to the non-breeding season. This is the first report describing different cell types in the initial segment and three different regions of the epididymis with ultrastructural seasonal variations in the Keeled Indian Mabuya, Eutropis carinata (Scincidae).

Publisher

Informatics Publishing Limited

Subject

General Materials Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3