EFFECT OF THIOUREA ON THE THYROID GLAND IN THE TADPOLES OF TOAD, BUFO STOMATICUS
*Rekha Rajput
ABSTRACT
The present study deals with the effect of Thiourea on the tadpole larvae of Bufo stomaticus. These tadpole larvae identified into three stages-pre-metamorphic (stage 24-25), pro-metamorphic (stage 34-35), and metamorphic climax (stage 38-40).They were exposed to five different doses of Thio-urea i.e. 0.04%, 0.08%, 0.1%, 0.2% and 0.3% of the solution . Experiments were conducted at room temperature (28ºC-32ºC) for 15 days. Tadpoles larvae of each group were morphologically examined under stereoscopic binocular microscope to find out the changes in size of thyroid gland. The results were statistically analyzed and significant changes were observed in some groups
Keywords: Tadpoles, Thio-urea, Bufo stomaticus and Thyroid gland.
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