STUDIES ON METAMORPHOSIS ON AMPHIBIA
نویسندگان
چکیده
منابع مشابه
Studies on metamorphosis in amphibia (2).
It has been made clear by many studies since G u d e r n a t sc!h (1912) that the bewildering sequel of appearance and disappearance of various organs and tissues during metamorphosis of the amphibia is governed and regulated by thyroid hormone. However, as to the relation of this hormone to various stages of metamorphosis, only a glimpse was gained by works of M i y a s hit a, Nona k a and Yam...
متن کاملBiochemical Studies on Amphibian Metamorphosis
Thyroxine has been shown to accelerate the synthesis of carbamyl phosphate synthetase in the liver of Rana catesbeiana. Stimulation of carbamyl phosphate synthetase synthesis by thyroxine appears to be relatively specific because of the following observations: (1) succinoxidase activity decreased during the time that carbamyl phosphate synthetase increased; (2) liver catalase responded more slo...
متن کاملEffects of developmental and growth history on metamorphosis in the gray treefrog, Hyla versicolor (Amphibia, Anura).
In ecological models, the timing of amphibian metamorphosis is dependent upon rate of larval growth, e.g., tadpoles that experience a decrease in growth rate can initiate metamorphosis early. Recent authors have suggested that this plasticity may be lost at some point during the larval period. We tested this hypothesis by exposing groups of tadpoles of the gray treefrog, Hyla versicolor, to dif...
متن کاملImmunological Studies of Insect Metamorphosis
1. The cell-free blood of the Cecropia silkworm produces a maximum of nine bands of antigen-antibody precipitate when reacted in antiserum-agar tests with antisera prepared by injecting Cecropia extracts into rabbits. The blood antigens producing these bands of precipitate have the properties of proteins in that they are non-dialyzable, labile at 75 degrees C., and salted out by 75 per cent sat...
متن کاملBiochemical Studies on Amphibian Metamorphosis I. The effect of thyroxine on protein synthesis in the tadpole
Thyroxine has been shown to accelerate the synthesis of carbamyl phosphate synthetase in the liver of Rana catesbdana. Stimulation of carbamyl phosphate synthetase synthesis by thyroxine appears to be relatively specific because of the following observations: (I) succinoxidase activity decreased during the time that carbamyl phosphate synthetase increased; (2) liver catalase responded more slow...
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ژورنال
عنوان ژورنال: The KITAKANTO Medical Journal
سال: 1960
ISSN: 0023-1908,1883-6135
DOI: 10.2974/kmj1951.10.392