Short Communication:
Cristian Eric Schleich, Cristina Busch (2004): Energetic expenditure during
vocalization in pups of the subterranean rodent Ctenomys talarum.
Naturwissenschaften, 91(11), 548-551
Translated Journal Title: Natural Sciences
Abstract: 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
period.
URL of article:
<a href="http://springerlink.metapress.com/link.asp?id=QJD64XWB74ET312Q";
rel="nofollow">http://springerlink.metapress.com/link.asp?id=QJD64XWB74ET312Q</a>
DOI URL: <a href="http://dx.doi.org/10.1007/s00114-004-0565-";
rel="nofollow">http://dx.doi.org/10.1007/s00114-004-0565-</a>
Sonja Amoser, PhD Student
University of Vienna, Institute of Zoology
Althanstrasse 14, 1090 Vienna, Austria
Phone: +43-1-4277-54467 oder +43-664-5006106 (private)
Fax: +43-1-4277-54506
email: [EMAIL PROTECTED]
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