Juvenile vocalizations ofCtenomys talarum (Rodentia: Octodontidae) |
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Authors: | Cristian E Schleich Cristina Busch |
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Institution: | (1) Departamento de Biología, CC 1245, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3250, 7600 Mar del Plata, Argentina |
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Abstract: | We analysed the physical structure and functional interpretation of juvenile vocalizations ofCtenomys talarum Thomas, 1898. Two sounds, one true vocalization (care-elicitation call) and one mechanical sound (nursing sound) were recorded
during the nestling period. Care-elicitation calls were emitted by isolated pups and caused the mother to respond by immediately
approaching the pups to take care of them. This maternal response to the care-elicitation calls ofC. talarum pups, together with the production of these vocalizations during the first weeks after birth, when pups depend exclusively
on their mother to obtain food and maintain their body temperature, give preliminary support for the recent theory that care-elicitation
cries are honest advertisements of offspring need. |
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