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12 January 2017 Respiration Rates of Larval Cope's Gray Tree Frogs ( Hyla chrysoscelis) Across a Range in Temperatures
Christopher L. Rowe, Sarah A. Funck
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Understanding ecophysiological/bioenergetic responses to elevated temperatures is vital to assessing future impacts on amphibian health and demographics. There is, however, a dearth of data concerning thermal influences on the energetics of larval amphibians, including measures of respiration rates which underlie other bioenergetic processes. We therefore measured respiration rates across a range of temperatures (18.3–30°C) in wild-caught larval Cope's Gray Tree Frog (Hyla chrysoscelis), a species widespread throughout the eastern and southeastern United States. Temperature and body size significantly affected respiration rates in a linear fashion. The Q10 calculated across the range of exposure temperatures was 1.72 for absolute respiration rates (mg O2/min) and 1.76 for mass-adjusted rates (mg O2/g min), suggesting less than a doubling of respiration rates over a 10°C increase in temperature. Our data, when considered with the limited data for other amphibians, suggest there are substantial species-specific differences in respiration/bioenergetics. Such ecophysiological information is vital to future considerations of amphibian energy budgets in light of the changing global climate.

Copyright 2017 Society for the Study of Amphibians and Reptiles
Christopher L. Rowe and Sarah A. Funck "Respiration Rates of Larval Cope's Gray Tree Frogs ( Hyla chrysoscelis) Across a Range in Temperatures," Journal of Herpetology 51(1), 130-133, (12 January 2017).
Accepted: 1 May 2016; Published: 12 January 2017

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