Changes in the thyroid gland of the male emballonurid bat, Taphozous kacchensis (Dobson) during the reproductive cycle

Copyright: © Bansod and Dhamani, This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. The thyroid gland showed marked seasonal variations in weight, quantity of colloid and epithelial height during various phases of reproductive cycle. Suggesting the thyroid gland to be inactive during sexually quiescence period and active during breeding period similarly to the testicular cycle. The body weight, thyroid gland weight and testis weight in sexually active bats is higher as compare with sexually quiescence bats. It is suggested that in Taphozous kachhensis the positive correlation between thyroid gland and testicular cycle occurs only during the phases of the reproductive cycle when the body weight and testicular activity are also closely correlated.