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Journal of the Marine Biological Association of India

Volume 17 Issue 3

The development of thyroid in an elasmobranch Chiloscyllium indicum (Gmelin).

Marimma Kuruvilla
Abstract

The development of thyroid in the elasmobranch Chiloscyllium indicun was found to be markedly different from that had been described in other elasmobranchs. It developed as a mid-ventral groove on the floor of the pharynx and the cells were considered to be endostylar in origin. The development of the gland as observed in embryos measuring between 1.9 mm and 16.8 mm long was described, compared and discussed with those in other elasmobranchs.

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Date : 30-12-1975