Jump to ContentJump to Main Navigation
The Quintessential NaturalistHonoring the Life and Legacy of Oliver P. Pearson$
Users without a subscription are not able to see the full content.

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

Show Summary Details
Page of

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: 30 July 2021

Physiological Flexibility in Field Urine Osmolality of Rodents from Semi-Arid Chile

Physiological Flexibility in Field Urine Osmolality of Rodents from Semi-Arid Chile

Flexibilidad FisiolóGica En La Osmolaridad Urinaria De Campo En Roedores De Chile Semi-áRido

Chapter:
(p.165) Physiological Flexibility in Field Urine Osmolality of Rodents from Semi-Arid Chile
Source:
The Quintessential Naturalist
Author(s):

Francisco Bozinovic

Mauricio Lima

Leonardo D. Bacigalupe

Julio R. Gutiérrez

Mario Rosenmann

Arturo Cortés

Publisher:
University of California Press
DOI:10.1525/california/9780520098596.003.0007

This chapter assesses long-term physiological responses in field urine osmolality (Uosm) of four murid rodents from semi-arid Chile, as a function of the El Niño Southern Oscillation. It observes that all of the rodent species studied showed important temporal fluctuations in their Uosm-values, indicating both seasonal and annual patterns of physiological variability characterized by high Uosm-values during the Austral spring–summer and low Uosm-values during autumn–winter. The chapter further observes significant effects of year and season on Uosm-values, with a year x season interaction. It demonstrates how flexibility of physiological mechanisms allows small mammals in arid or semi-arid regions to cope with long-term seasonal and annual water variability in their semi-arid habitat. The chapter notes that the trends of seasonal water balance during contrasting years (i.e., El Niño vs. dry years) is likely to be a consequence of plant cover, since this is the principal food and water source of rodents at Fray Jorge.

Keywords:   physiological responses, field urine osmolality, rodents, Chile, El Niño, small mammals, habitat, plant cover, Fray Jorge

California Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs, and if you can't find the answer there, please contact us.