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The Quintessential NaturalistHonoring the Life and Legacy of Oliver P. Pearson$
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Douglas Kelt and Deborah Kaspin

Print publication date: 2007

Print ISBN-13: 9780520098596

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520098596.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 24 July 2021

Energy Budget in Subterranean Rodents: Insights from the Tuco-Tuco Ctenomys Talarum (Rodentia: Ctenomyidae)

Energy Budget in Subterranean Rodents: Insights from the Tuco-Tuco Ctenomys Talarum (Rodentia: Ctenomyidae)

El Presupuesto EnergÉTico En Roedores SubterrÁNeos A La Luz De Estudios En El Tuco-Tuco Ctenomys Talarum (Rodentia: Ctenomyodae)

Chapter:
(p.111) Energy Budget in Subterranean Rodents: Insights from the Tuco-Tuco Ctenomys Talarum (Rodentia: Ctenomyidae)
Source:
The Quintessential Naturalist
Author(s):

C. Daniel Antinuchi

Roxana R. Zenuto

Facunda Luna

Ana Paula Cutrera

Paula P. Perissinotti

Cristina Busch

Publisher:
University of California Press
DOI:10.1525/california/9780520098596.003.0005

This chapter focuses on the energy budget of a single species (a tuco-tuco, one of Pearson's favorite beasts). It characterizes the energy budget for the South American subterranean rodent Ctenomys talarum (Talas tuco-tuco), based on new and published data on energy intake (ingestion and digestion) and expenditure (cellular maintenance, thermoregulation, digging activity, movement, pregnancy, lactation, and growth). The chapter observes that animals fed on an low-quality diet ingested more food, produced more feces, and showed lower incidence of coprophagy, lower digestibility, and reduced transit time relative to those fed a high-quality diet. It notes that this increase in food intake would assure similar total-energy assimilation as a high-quality diet, and demonstrates that tuco-tucos can adjust their ingestive and digestive processes according to the quality of the available food resources. The chapter also discusses possible extrinsic and intrinsic limitations on the C. talarum's energy budget.

Keywords:   energy budget, Ctenomys talarum, energy intake, expenditure, low-quality diet, coprophagy, high-quality diet

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