CHANGES IN ACTIVITIES OF SUCCINIC AND GLUTAMIC DEHYDROGENASES, ASPARTIC-α-KETOGLUTARIC TRANSAMINASE AND PROTEOLYTIC ENZYME IN TADPOLE TAIL TISSUE OF RANA JAPONICA DURING INDUCED METAMORPHOSIS

Abstract

Some enzyme activities of the tadpole tail of Rana japonica were studied for the period of metamorphosis induced by thyroid feeding. The activity of succinic and glutamic dehydrogenases diminished prior to the onset of metamorphosis, while the activity of aspartic-α-ketoglutaric transaminase and protease did not show any significant fluctuation. With these observations as a basis, the mechanism of the resorption of the tail mass was discussed.