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Stress-induced peak (but not resting) metabolism correlates with mating display intensity in male guppies

Biro, Peter, Fanson, Kerry and Santostefano, Francesca 2016, Stress-induced peak (but not resting) metabolism correlates with mating display intensity in male guppies, Ecology and evolution, vol. 6, no. 18, pp. 6537-6545, doi: 10.1002/ece3.2373.

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Title Stress-induced peak (but not resting) metabolism correlates with mating display intensity in male guppies
Author(s) Biro, PeterORCID iD for Biro, Peter orcid.org/0000-0002-3565-240X
Fanson, KerryORCID iD for Fanson, Kerry orcid.org/0000-0001-9372-2018
Santostefano, Francesca
Journal name Ecology and evolution
Volume number 6
Issue number 18
Start page 6537
End page 6545
Total pages 9
Publisher Wiley
Place of publication Chichester, Eng.
Publication date 2016-09-01
ISSN 2045-7758
Keyword(s) Consistent individual differences
fish
habituation
metabolism
personality
Summary Recent empirical and conceptual papers have highlighted the potential for metabolism to act as a proximate mechanism for behavior that could explain animal personality (consistency over time). Under this hypothesis, individuals with consistently high levels of behavioral activity should also have high resting metabolic rate (RMR) as it can reflect capacity to process food and generate energy. We tested for the predicted positive covariance between RMR and three behaviors that differ in energy demands in 30 male guppies, using multivariate mixed models; we repeatedly measured their activity (10 times each), courtship displays (nine times), voracity (10 times), and metabolism (four-times). Resting metabolic rate (measured overnight in respirometry trials) did not consistently differ among males, whereas initial peak metabolism measured during those same trials (R = 0.42), and all behaviors were repeatable (R = 0.33–0.51). RMR declined over time suggesting habituation to the protocol, whereas peak metabolism did not. Initial peak metabolism was negatively correlated with courtship display intensity, and voracity was positively correlated with activity, but all other among-individual correlations were not significant. We conclude that RMR does not provide a proximate explanation for consistent individual differences in behavior in male guppies, and therefore the potential for independent evolution of these physiological and behavioral traits seems possible. Finally, we identify peak metabolism as a potential measure of the stress response to confinement, which highlights the value of considering various aspects of metabolic rates recording during respirometry trials.
Language eng
DOI 10.1002/ece3.2373
Field of Research 060801 Animal Behaviour
060805 Animal Neurobiology
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086962

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Wed, 02 Nov 2016, 14:33:14 EST

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