INVESTIGADORES
SCHLEICH Cristian Eric
artículos
Título:
Energetic expenditure during vocalization in pups of the subterranean rodent Ctenomys talarum
Autor/es:
SCHLEICH, C.E, BUSCH, C
Revista:
NATURWISSENSCHAFTEN
Editorial:
Springer Verlag
Referencias:
Lugar: Heidelberg; Año: 2004 vol. 91 p. 548 - 548
ISSN:
0028-1042
Resumen:
Theoretical signaling models predict that to be honest, begging vocalizations must be costly. To test this hypothesis, oxygen consumption was measured during resting and begging (i.e., vocalizing) activities in pups of the subterranean rodent Ctenomys talarum by means of open-flow respirometry. No statistical differences in individual oxygen consumption between resting and calling pups ranging in age from day 2 to day 20 were found. Given these data, begging calls of C. talarum could not be considered as honest advertisements of offspring need, contrary to what suggested by the behavioral observations of the mother and pups during the nestling periodCtenomys talarum by means of open-flow respirometry. No statistical differences in individual oxygen consumption between resting and calling pups ranging in age from day 2 to day 20 were found. Given these data, begging calls of C. talarum could not be considered as honest advertisements of offspring need, contrary to what suggested by the behavioral observations of the mother and pups during the nestling periodC. talarum could not be considered as honest advertisements of offspring need, contrary to what suggested by the behavioral observations of the mother and pups during the nestling period