Binding of sex steroid to oviduct cytosol of the newt, Cynops pyrrhogaster ensicauda.
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چکیده
منابع مشابه
Spontaneous regressive epitheliomas in the Japanese newt, Cynops pyrrhogaster.
Spontaneous tumors in urodele amphibians have been considered uncommon, and this resistance has sometimes been associated with the natural regenerative capacity of tissues in such species. This report describes spontaneous, nonpigmented, benign epitheliomas which were found in 44 of 1586 (2.8%) adult newts, Cynops pyrrhogaster, captured in central Japan. Both sexes were affected equally, usuall...
متن کاملA nephroblastoma in a fire-bellied newt, Cynops pyrrhogaster.
Nephroblastomas seem to be very rare in animals with mesonephritic kidneys (fishes and amphibia), although immense numbers of many species are kept as pets and in laboratories. A single case was recorded in the steelhead trout (5). The steelhead trout (Salmo gairdneri, Rich.) is the same species as the rainbow trout, differing only in that it spends part of its life in the sea and returns to fr...
متن کاملEvidence for true fall-mating in Japanese newt Cynops pyrrhogaster.
The mating season of Japanese newt Cynops pyrrhogaster is generally thought to occur once a year in spring to early summer, during the months of April to June, as in many other Japanese amphibians. However, in fall, from September to October, we often observed breeding colored males demonstrating a mating behavior with females in the field. In this study, in order to identify their true mating ...
متن کاملSpontaneous epidermal tumor in an adult newt, Cynops pyrrhogaster.
Reports of spontaneous tumors occurring in urodele amphibians are rare (1-7, 9, 11, 13-15), and it has been suggested that animals that regenerate well, such as newts, retain powerful morphogenetic fields capable of controlling any aberrant cells that arise (8, 10, 12). It is certainly surprising that there are very few reports of spontaneous skin tumors in urodeles since, of all tumors, these ...
متن کاملAre the parathyroid glands necessary to the life of the newt, Cynops pyrrhogaster?
In contrast to the diverse results of parathyroidectomy in anurans as to the appearance of neuromuscular symptom, effects of the removal of parathyroid glands in urodeles have been in agreement with each other. Scholz (1935) working with Salamandra, reported that his animals were kept in his laboratory up to 1 year after parathyroidectomy without any ill effect. Parathyroidectomy in Triton and ...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy, Series B
سال: 1986
ISSN: 0386-2208,1349-2896
DOI: 10.2183/pjab.62.153