Effect of pinealectomy on the annual testicular cycle of Calotes versicolor

Abstract

Pinealectomy resulted in an earlier recrudescence and a later regression of the annual gonadal cycle of the lizard Calotes versicolor. Spermatozoa appeared early and were present throughout the course of the experiment, namely, for 11 months. In control lizards (sham-operated, intact), on the other hand, spermatozoa appeared in late April and were observed only until August, a period of 5 months. The sex segments of the kidneys showed a cycle similar to the cycle of the testes in both groups. © 1977.