INVESTIGADORES
SANABRIA Eduardo Alfredo
artículos
Título:
Seasonal changes in the thermoregulatory strategies of Rhinella arenarum in the Monte desert, Argentina.
Autor/es:
SANABRIA E.; QUIROGA L.; MARTINO A. L.
Revista:
JOURNAL OF THERMAL BIOLOGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2011 vol. 36 p. 23 - 28
ISSN:
0306-4565
Resumen:
Wedetermined and compared the efficiency of thermoregulation of Rhinella arenarumin the Monte desert (Argentina) in two seasons, dry and wet. In the field, we measured body temperatures, micro-habitat temperatures and operative temperatures; while in the laboratory; we measured the selected body temperatures. Our results show a change in the thermoregulatory strategy of R. arenarumthat is related to environmental constraints on their thermal niche. R. arenarum has the ability to be plastic and combine two strategies: (i) a moderate thermoregulator in the wet season, where thermal resources are available such that body temperature is maintained within the set points and physiologicial and behavioral processes are optimized; and (ii) a thermoconformer in the dry season where the thermal environment is more homogeneous and there is greater time invested in searching for food.
