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Giant spiny-frog (Paa spinosa) from different populations differ in thermal preference but not in thermal tolerance

Giant spiny-frog (Paa spinosa) from different populations differ in thermal preference but not in... To examine whether different thermal environments have induced a change in thermal characteristics, we have conducted a between-population comparison on broad geographic patterns of preferred body temperature and critical thermal maximum in a giant spiny-frog Paa spinosa. We found a bimodal pattern of preferred body temperature during the day, with high preferred body temperature during the inactive diurnal period and low temperature during the active nocturnal period. There were significant differences among six populations of P. spinosa in preferred body temperatures, which decreased along a south to north gradient. Unlike preferred body temperatures, critical thermal maximum did not differ between frogs from the six localities. Although not all characteristics of thermal physiology in P. spinosa underwent parallel changes between the populations, the shift of preferred body temperatures suggests that the features of thermal physiology in the frog may change along a latitudinal gradient in response to different thermal environments. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aquatic Ecology Springer Journals

Giant spiny-frog (Paa spinosa) from different populations differ in thermal preference but not in thermal tolerance

Zheng, Rong-Quan; Liu, Chun-Tao
Aquatic Ecology , Volume 44 (4) – Jan 8, 2010
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References (68)

Publisher
Springer Journals
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Life Sciences; Ecosystems; Freshwater & Marine Ecology
ISSN
1386-2588
eISSN
1573-5125
DOI
10.1007/s10452-009-9310-3
Publisher site
See Article on Publisher Site

Abstract

To examine whether different thermal environments have induced a change in thermal characteristics, we have conducted a between-population comparison on broad geographic patterns of preferred body temperature and critical thermal maximum in a giant spiny-frog Paa spinosa. We found a bimodal pattern of preferred body temperature during the day, with high preferred body temperature during the inactive diurnal period and low temperature during the active nocturnal period. There were significant differences among six populations of P. spinosa in preferred body temperatures, which decreased along a south to north gradient. Unlike preferred body temperatures, critical thermal maximum did not differ between frogs from the six localities. Although not all characteristics of thermal physiology in P. spinosa underwent parallel changes between the populations, the shift of preferred body temperatures suggests that the features of thermal physiology in the frog may change along a latitudinal gradient in response to different thermal environments.

Journal

Aquatic Ecology – Springer Journals

Published: Jan 8, 2010

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