Results 311 to 320 of about 29,436 (338)
Some of the next articles are maybe not open access.
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
openaire +1 more source
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
openaire +1 more source
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,
openaire +1 more source
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. * * *
openaire +1 more source
Function of the Anuran Conus Arteriosus
Journal of Experimental Biology, 1974ABSTRACT The anuran conus arteriosus was studied by direct observation of its structure and function and by observing the effects of artificially induced contraction on the pressure pulse in the arterial arches. The beat of the anuran conus was found to close the outlet to the pulmocutaneous arches. The timing of the beat of the conus in
openaire +2 more sources
Electrocardiographic characteristics of four anuran amphibia
Comparative Biochemistry and Physiology Part A: Physiology, 1974Abstract 1. 1. Multiple-lead electrocardiograms (ECG's), recorded in the field, are presented for four species of anuran amphibians. 2. 2. The characteristics of these ECG's are discussed in terms of comparative cardiac structure between reptiles and amphibians. 3. 3.
openaire +2 more sources
2016
Learning to recognize and categorize other individuals is a cornerstone of animal social behavior. By learning about individually distinctive signal properties, receivers can perceptually discriminate among conspecifics to direct appropriate behaviors toward particular individuals.
openaire +1 more source
Learning to recognize and categorize other individuals is a cornerstone of animal social behavior. By learning about individually distinctive signal properties, receivers can perceptually discriminate among conspecifics to direct appropriate behaviors toward particular individuals.
openaire +1 more source