Observations on the Spermatogenic Cycle of the Grass Snake,Natrix natrix (Serpentes:Colubridae) in Northern Iran

作     者：Afshin FAGHIRI Abdolhossein SHIRAVI Vida HOJATI Haji Gholi KAMI 

作者机构：Department of BiologyIslamic Azad UniversityDamghan BranchDamghanIran Department of BiologyFaculty of ScienceGolestan UniversityGorganIran 

出 版 物：《Asian Herpetological Research》 (亚洲两栖爬行动物研究（英文版）)

年 卷 期：2011年第2卷第1期

页      面：55-59页

核心收录：

学科分类：0905[农学-畜牧学] 09[农学] 090501[农学-动物遗传育种与繁殖] 

主　　题：spermatogenesis Grass snake Natrix natrix northern Iran 

摘      要：The Grass Snake, Natrix natrix, is one of the non-venomous oviparous snakes of the family Colubridae, found in Mazandaran, a northern province of Iran. In order to study the spermatogenic cycle of this species in the area, sampling was done from April to November, and twenty-six male snakes were collected by hand during daylight hours. Testes were extracted from the specimens, and were fixed and prepared for histological examination. The results indicated that the spermatogenesis started in early June, November. The mean body length of the specimens was reached its height in August and September, and ended in measured 636.21 mm, and the mean volume of testes was 524.54 rnm3 and 569.06 mm3 for the right and left ones, respectively, and the mean weight of the testes was 0.051 g Spermatogenesis in this species is aestival and sperms are stored for use in the year following production.