Results 171 to 180 of about 10,798 (215)

Behavioural adaptations of Rana temporaria to cold climates

Journal of Thermal Biology, 2015
Environmental conditions at the edge of a species' ecological optimum can exert great ecological or evolutionary pressure at local populations. For ectotherms like amphibians temperature is one of the most important abiotic factors of their environment as it influences directly their metabolism and sets limits to their distribution.
Gerda, Ludwig, Ulrich, Sinsch, Bernd, Pelster   +2 more
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Isolation of Neurohypophysial Hormones of Rana temporaria

Nature New Biology, 1972
THE neurohypophysial hormones of several vertebrates have been identified1–3, but the nature of the neurohypophysial principles of amphibians is in doubt. Vasotocin (8 Arg-oxytocin) is known to be present, but the oxytocic component could be either oxytocin, mesotocin (8 Ileu-oxytocin) or both1–7. Since the neutral peptides are difficult to distinguish
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Une ponte albinos de Rana temporaria

Bulletin mensuel de la Société linnéenne de Lyon, 1967
Guyétant Robert. Une ponte albinos de Rana temporaria. In: Bulletin mensuel de la Société linnéenne de Lyon, 36ᵉ année, n°6, juin 1967. pp. 254-257.
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NAG infection in tadpoles of Rana temporaria

Bulletin of Experimental Biology and Medicine, 1976
In a series of experiments 2250 tadpoles were infected with three strains of NAG vibrios. It can be concluded from the results of bacteriological and pathomorphological electron-microscopic and light-optical investigations that during the first 2 days the animals develop and recover from an acute infection, but the vibrios later persist for a long time
A. P. Avtsyn, V. A. Shakhlamov, R. S. Trager, N. A. Kalinina, I. R. Balyn', T. B. Timashkevich, G. P. Polyakova   +6 more
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DENSITY AND SURVIVAL OF RANA ARVALIS AND RANA TEMPORARIA

1984
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Adenohypophysis and growth in tadpoles of Rana temporaria

General and Comparative Endocrinology, 1978
Growth of the Rana temporaria tadpole was investigated after (1) adenohypophysectomy, (2) autografting the adenohypophysis to the tail, and (3) homografting an extra adenohypophysis into the tail of the otherwise normal tadpole. All operations were performed using the early tail-bud embryo.
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Rana temporaria Linnaeus 1758

temporaria. 13. R. dorso plamusculo subangulato. Faun. fvec. 250. Rana palmis tetradactylis sissis, plantis pentada c tylis palmatis: pollice longiore. It. œ 1. 154. Rana temporaria. Gefn. ovip. 46. Rana aquatica innoxia. Aldr. ovip. 89. Rana. Jonst. quadr. t. 75. f 5, 6, 7 8. Raj. quadr 247. Rana aquatica. Bradl. natur. t. 21. f- I. Habitat in Europa.
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Tooth replacement in the frog Rana temporaria

Journal of Morphology, 1966
AbstractThe development and replacement of teeth in the frog Rana temporaria is analyzed by dividing the life cycle of the tooth into a number of stages. These stages are identified by the examination of alizarin whole mounts. The dentition in this species is fairly complete and the percentage of functional loci is approximately 74.
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Rana temporaria Linnaeus, 1758

2015
Kalezić M, Tomović Lj, Džukić G, editors. Red book of fauna of Serbia. 1, Amphibians. Belgrade: Faculty of Biology : Enviroment Protection Institute of Serbia; 2015. p. 192-8.
Urošević, Aleksandar, Džukić, Georg
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Action of Insulin on the Frog (Rana temporaria)

Nature, 1953
EARLIER investigations of the action of insulin on cold-blooded vertebrates have shown that, although large doses usually lead to the appearance of typical convulsions, there is often a long latent period (1–2 days at room temperature) during which there are no visible symptoms1–3. In experiments performed in March and May 1952 the action of insulin on
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