A histological study of the testes of stags shot in autumn (sexual season) and spring (quiescent period) indicated that the 3-fold increase in testicular size observed in the autumn was accompanied by increases in nearly all features studied (volumes of intertubular tissue, Leydig cells, blood vessels and peritubular cells; diameter and length of seminiferous tubules; the number of A1 spermatog...

Taphozous longimanus (Hardwicke) is a continuous breeder as males show full spermatogenic activity throughout the year. Microscopic study of testis reveals that immature, pre-breeding and sexually active males occur round the year. The testis shows variations in its structure during the different stages of breeding activity. In the pre-breeding period, testis shows various stages of spermatogen...

Endocannabinoids control male reproduction acting at central and local level via cannabinoid receptors. The cannabinoid receptor CB1 has been characterized in the testis, in somatic and germ cells of mammalian and non-mammalian animal models, and its activity related to Leydig cell differentiation, steroidogenesis, spermiogenesis, sperm quality, and maturation. In this short review, we provide ...

during hibernation period from mid october to late march, we removed testis of laudakia caucasia. based on histological and statistical analyses we obtained two phases in spermatogenesis in this lizard as follows: (a) from october to december, in which the spermatogenesis is inactive and (b) from january to march, in which the spermatogenesis is active. spermatogenesis during late hibernation o...