EFFECT OF THYROXINE ON THE MORPHOMETRIC STUDIES OF TOAD, BUFO STOMATICUS

The present study deals with the effect of thyroxine on the young toads of Bufo stomaticus. The Toads were exposed to two different doses of thyroxine i.e. 10 -2 thyroxine and 10 -4 thyroxine. Experiment was conducted for 15 days. The young toads were examine for various morphometric parameters viz:- Snout to Vent Length (SVL), Head Length (HL), Head Width (HW), Diameter of Eye (DOE), Inter Orbital Space (IOS), Hand Length (HAL), Foot Length (FL), Tibea Length (TL), Leg length (LL), Arm Length (AL), First Finger Length (FFL) and Second Finger length (SFL).The results were statistically analyzed and significant changes were observed on the selected parameters. Key words: Toad, Metamorphosis, Thyroxine, Morphometry. REFERENCES Mc Garry M P and Vanable J W, The role of Thyroxine in the formation of Gland Rudiments in the skin of Xenopus laevis , 1969, Dev. Bio. 20, 426-434. Storz and Brain L, “The Role of Thyroxine in spade foot toad Development”. 2003, Electronic Thesis, Treatises and Dissertations. Paper 1553. Mohanty H and Dutta S K, Life history of the common Indian tree frog, Polypedates maculates (Anura : Rhacophoridae ). J. Bombay Nat. Hist. Soc. 1981, 85,512-517. Shaffer HB, Size and scaling in the Indian frogs, Nyctibatrachus and Nanno batrachus (Ranidae) . Fieldian Zool.1988, 46,1-10. Sekar A G ,a role of the morphometry of Rhacophorus malabaricus, the malabar gliding frog . J. Bombay Nat. Hist. Soc.1988, 85,527-628. Mohanty A K, Biology of Indian Paddy Field frog, Rana limnocharis. 1994 , Ph. D. thesis, Utkal University, Orissa. Saxena S and Sharma R, Effect of testosterone on the morphometric studies of toad, Bufo fergusonii . J. Exp. Zool. India, 2003, 3, 231-235. Bhattacharraya SK, Chaki KK and Misra KK, Effect of thyroxine on some digestive enzymes of the adult male toad, Bufo melanostictus. Folia Biol (Krakow).2002, 50(1-2) : 83-90. Page R B, Voss SR, Samules AK , Smith JJ, Putta S and Beachy CK , Effect of thyroid hormone concentration on the transcriptional response underlying induced ...