Striped marsh frog (Limnodynastes peronii) tadpoles do not acclimate metabolic performance to thermal variability

Niehaus, Amanda C., Wilson, Robbie S., Seebacher, Frank and Franklin, Craig E. (2011) Striped marsh frog (Limnodynastes peronii) tadpoles do not acclimate metabolic performance to thermal variability. Journal of Experimental Biology, 214 11: 1965-1970. doi:10.1242/jeb.054478

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ246928_OA.pdf Full text (open access) application/pdf 395.66KB 0

Author Niehaus, Amanda C.
Wilson, Robbie S.
Seebacher, Frank
Franklin, Craig E.
Title Striped marsh frog (Limnodynastes peronii) tadpoles do not acclimate metabolic performance to thermal variability
Formatted title
Striped marsh frog (Limnodynastes peronii) tadpoles do not acclimate metabolic performance to thermal variability
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
1477-9145
Publication date 2011-06
Sub-type Article (original research)
DOI 10.1242/jeb.054478
Open Access Status File (Publisher version)
Volume 214
Issue 11
Start page 1965
End page 1970
Total pages 6
Place of publication Cambridge, U.K.
Publisher The Company of Biologists
Collection year 2012
Language eng
Formatted abstract
Human-induced climate change is predicted to affect not only the mean temperature of the environment but also the variability and frequency of extreme climatic events. Variability in an organism's developmental environment has the potential to markedly affect an individual's growth trajectory and physiological function, leading to impacts on individual fitness and population dynamics. Thus, it is important to consider the consequences of thermal variability on developing organisms and understand their capacity to respond to such increased variation. We investigated the capacity of larval striped marsh frogs (Limnodynastes peronii) to initiate a response to increases in the thermal variability of their developmental environment by reducing the sensitivity of their physiological rate functions to changes in temperature. In variable environments, we expected the thermal sensitivity of rate functions to decrease and their performance breadth to widen so as to buffer the effect of thermal variability. We raised larvae in stable (24°C), narrowly variable (22–26°C; mean 24°C) and widely variable (14–34°C; mean 24°C) thermal environments and measured the thermal sensitivity of their locomotor performance, heart rate, oxygen consumption and activities of two metabolic enzymes, lactate dehydrogenase and cytochrome c oxidase. We found that the temperature-dependent relationships of these physiological functions did not differ between tadpoles raised in stable or variable thermal conditions. Furthermore, the Q10 values of each response variable were virtually unaffected by treatment when measured over the entire thermal range. Our results reveal that larval amphibians exhibit little plasticity in metabolic traits to thermal variability. This lack of plasticity may have important implications for the growth and population dynamics of organisms in environments that are beginning to experience increased thermal variability.
Keyword Acclimation
Performance
Tadpole
Temperature
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 18 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 19 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 02 Sep 2011, 11:23:44 EST by Gail Walter on behalf of School of Biological Sciences