Results 131 to 140 of about 2,812 (174)

Responses of Rana temporaria and Rana esculenta to prolonged exposure to a saline environment

Comparative Biochemistry and Physiology, 1969
Abstract 1. 1. Rana temporaria and Rana esculenta can survive immersion in 0·7% saline for many weeks, despite increased plasma Na and osmolal concentrations. 2. 2. An increased plasma urea concentration—with decreased urinary urea concentration in the first few days—is considered as a physiological response to osmotic stress. 3.
P, Ackrill, R, Hornby, S, Thomas
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The pars distalis nerves and metamorphosis in Rana temporaria

General and Comparative Endocrinology, 1978
Abstract The length of prometamorphosis in the tadpoles of Rana temporaria is influenced by different treatments: (1) thyroidectomy, (2) propylthiouracil, (3) 1-thyroxine, (4) low temperature. In normally developing tadpoles the fluorescent pars distalis fibers persist until climax. Even when prometamorphosis is artificially prolonged, irrespective
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The Development of Phototaxis in the Frog (Rana Temporaria)

Journal of Experimental Biology, 1963
ABSTRACT Many experiments have shown that when a frog is disturbed it escapes towards the light, and that blue light is more effective than any other colour in guiding this response (see Pearse, 1910, for a review). A previously reported experiment (Muntz, 1962 b) has shown that the greater effectiveness of blue light is not simply due ...
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DNA synthesis during the development of Rana temporaria

Experimental Cell Research, 1966
Abstract For the first time a curve is published exhibiting all the four phases of DNA synthesis obtained during amphibian embryogenesis, and including so many determinations that each point, and therefore the phases, are established with satisfactory statistical significance.
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The effect of vitamin A on limb regeneration in Rana temporaria

Developmental Biology, 1983
Previous experiments in which vitamin A has been administered to developing or regenerating limbs have shown that different limb axes are affected. In regenerating axolotl limbs, serial reduplications in the proximodistal axis are produced. In the developing chick limb bud, mirror-imaged reduplications in the anteroposterior axis are produced.
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[Study on the origin of Rana temporaria for quality Oviduetus Ranae].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2004
To determine the origin of Rana temporaria for quality Oviduetus Ranae in the light of historical documents and modern researches on the classification of Rana temporaria chensinensis.Works of Chinese meteria medica of all ages, related historical documents and reports from home and abroad on researches of R.
Yi-ping, Li, Jin-gang, Zhang, Miao, Li, Chun-mei, Liu, Da-cheng, Jiang, Ming-lu, Deng   +5 more
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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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The transport of gonadotropin releasing factors in Rana temporaria

Cell and Tissue Research, 1974
In Rana temporaria, previous results, obtained in animals with hypothalamic islands, have shown that the gonadotropic activity of the pars distalis of the hypophysis is controlled by the pars ventralis of the tuber cinereum. As the pars distalis is not innervated by the brain, this control must be exerted via a humoral pathway, by means of releasing ...
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The roof of the hindbrain in Rana pipiens and Rana temporaria

Brain Research, 1980
G S, Dolman, G, Brocklehurst
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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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