Results 211 to 220 of about 4,987 (245)
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Dorsal striatopallidal system in anurans
Journal of Comparative Neurology, 2003AbstractThe dorsal striatopallidal system of tetrapods consists of the dorsal striatum (caudate‐putamen in mammals) and the dorsal pallidum. Although the existence of striatal and pallidal structures has been well documented in anuran amphibians, the exact boundaries of these structures have so far been a matter of debate.
Heike, Endepols +4 more
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Experientia, 1964
L'hypocorde des Anoures est d'origine endodermique. Sa reaction a la phosphatase alcaline s'accroit graduellement jusqu'a l'apparition des vacuoles. Au cours de sa fusion avec le canal perichondral, une reaction a l'enzyme s'observe a la surface externe de la membrane cellulaire. L'hypocorde peut aussi contribuer a la formation des vertebres.
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L'hypocorde des Anoures est d'origine endodermique. Sa reaction a la phosphatase alcaline s'accroit graduellement jusqu'a l'apparition des vacuoles. Au cours de sa fusion avec le canal perichondral, une reaction a l'enzyme s'observe a la surface externe de la membrane cellulaire. L'hypocorde peut aussi contribuer a la formation des vertebres.
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Anuran feeding after hypophysectomy
General and Comparative Endocrinology, 1971Spontaneous feeding continued in toads (Bufo americanus) and frogs (Rana p. pipiens) for 8–30 days following removal of the pars distalis. The toads always died within a few days after cessation of feeding. It is concluded that the pars distalis is not as essentially involved in normal feeding mechanisms as recently postulated by Dierickx.
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The Journal of the Acoustical Society of America, 2006
Acoustic sensing in anurans is mediated by several inner ear organs, including the amphibian papilla, basillar papilla, and lagena. The contribution of the saccule to hearing in adult ranids tends to be constrained to vibration sensitivity and gravity sensing, although there has been some evidence for low-frequency hearing sensitivity as well.
Seth S. Horowitz, Andrea M. Simmons
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Acoustic sensing in anurans is mediated by several inner ear organs, including the amphibian papilla, basillar papilla, and lagena. The contribution of the saccule to hearing in adult ranids tends to be constrained to vibration sensitivity and gravity sensing, although there has been some evidence for low-frequency hearing sensitivity as well.
Seth S. Horowitz, Andrea M. Simmons
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Neuromast topography in anuran amphibians
Journal of Morphology, 1987AbstractGeneralized anuran tadpoles across families exhibit a similar neuromast morphology on their heads, as follows: (1) all neuromast lines known for anurans are present; (2) within these lines total neuromast number ranges from about 250 to 320; (3) neuromasts form linear stitches composed of two to three, but sometimes up to five, neuromasts; (4 ...
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Association of anurans with pathogenic fungi
Mycopathologia, 1985In a study of 450 Amazonian anurans, we isolated yeasts and yeast-like fungi from 54 animals (Bufo granulosus, B. marinus, Dendrophrynyscus sp., Hyla geographica, H. lanciformes, Ololygon rubra, Adenomera hylaedactyla, Eleutherodactylus fenestratus, Leptodactylus fuscus, L. ocellatus, L. pentadactylus). The internal organs of these animals did not show
Mok, Waiyin, Carvalho, C. Morato de
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1970
An important part of the present knowledge about the active transport of ions derives from experiments with anuran epithelial membranes, of which the frog skin is a typical representative. Membranes of this kind are easily mounted into split chambers or studied in the form of vesicles (see chapters 12 and 13) and they survive for many hours in various ...
Arnošt Kotyk, Karel Janáček
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An important part of the present knowledge about the active transport of ions derives from experiments with anuran epithelial membranes, of which the frog skin is a typical representative. Membranes of this kind are easily mounted into split chambers or studied in the form of vesicles (see chapters 12 and 13) and they survive for many hours in various ...
Arnošt Kotyk, Karel Janáček
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Postmetamorphic Growth in Anurans
American Midland Naturalist, 1960Knowledge of the rate of growth and time of sexual maturity is necessary in analyzing the age structure, survival rate and reproductive potential of anuran populations. Growth rates of transformed anurans have been determined in three ways, depending on measurements of (1) preserved materials, (2) captive individuals, and (3) individuals, either marked,
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Karyotypes of Leptodactylidae Anurans
Journal of Herpetology, 1972Karyotypes of 8 species of Leptodactylidae amphibians were studied. They constitute two groups with 2n=22 and 2n=26 chromosomes. Centric fusions and pericentric inversions are the most important mechanisms of karyotype differentiation among these species. Cytophotometric measurements of 7 species showed a gradual increase of DNA content. * * *
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