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new article in Naturwissenschaften, 91(11)

Subject: new article in Naturwissenschaften, 91(11)
From: Sonja Amoser <>
Date: Wed, 10 Nov 2004 09:04:59 -0800
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
 URL of article:
 <a  href=""; 
 DOI URL: <a  href=""; 
 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

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