Journal of the Marine Biological Association of India

Volume 32 Issue 1&2

Seasonal changes in gonads and their relationship with gonadotrophs of the pituitary in Etroplus suratensis (Bloch).

L.Krishnan and A. D. Diwan.

Detailed histological studies of the gonads of Etroplus suratensis (Bloch) collected from the brackish water areas of Poothotta near Cochin during May 83 - April 84 have shown that the peak breeding season of the species is in December and January. A secondary peak is also noticed in June and July. During peak growth phases of the gonads, the gonadotrophs of the pituitary are found to be active and prominent denoting a close relationship between the activity of these cells and the maturation of the gonads of the species. The gonadotrophs are seen less prominent and inactive during non-breeding months. The details of the maturity stages of the male and the female have also been described.

Date : 31-12-1990