Energy substrate utilization during nightly vocal activity in three species of Scinax (Anura/Hylidae)

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
José Eduardo CarvalhoCarlos Arturo Navas

Abstract

Anuran amphibians exhibit different patterns of energy substrate utilization that correlate with the intensity of vocal and locomotor activities. Given the remarkable differences among species in breeding and feeding strategies, and the different ways energy is used in the whole animal, the suggested correlations between calling and locomotor behavior and the level of energy substrates in the muscles responsible for such activities are more complex than previously reported. We explored the relationships between calling and locomotor behavior and energy supply to trunk and hindlimb muscles, respectively, within the ecologically diverse tree-frog genus Scinax. Specifically, we measured the relative amount of carbohydrates and lipids in these two groups of muscles, and in the liver of three species of Scinax that differ in vocal and locomotor performance, and compared our results with those of two other species for which comparable data are available. We also compared the contents of lipids and carbohydrates of conspecific males collected at the beginning and after 4 h of calling activity. The stomach content to potential feeding opportunities across species was also assessed in both groups of males. Scinax hiemalis and S. rizibil...Continue Reading

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Citations

Sep 1, 2011·Journal of Insect Physiology·Caroline M WilliamsBrent J Sinclair
Oct 9, 2008·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Ana Carolina I KissFernando R Gomes
Jun 1, 2019·Integrative Zoology·Antonio C GalloJosé Eduardo DE Carvalho

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