| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Variation in the link between oxygen consumption and ATP production, and its relevance for animal performance
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| Autores: |
Salin, Karine
Auer, Sonya K.
Rey, Benjamin
Selman, Colin
Metcalfe, Neil B.
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| Data: |
2015-08
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| Ano: |
2015
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| Palavras-chave: |
Mitochondrial coupling efficiency
Life history
Oxidative stress
Reactive oxygen species
Trade-off
Uncoupling
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| Resumo: |
It is often assumed that an animal's metabolic rate can be estimated through measuring the whole-organism oxygen consumption rate. However, oxygen consumption alone is unlikely to be a sufficient marker of energy metabolism in many situations. This is due to the inherent variability in the link between oxidation and phosphorylation; that is, the amount of adenosine triphosphate (ATP) generated per molecule of oxygen consumed by mitochondria (P/O ratio). In this article, we describe how the P/O ratio can vary within and among individuals, and in response to a number of environmental parameters, including diet and temperature. As the P/O ratio affects the efficiency of cellular energy production, its variability may have significant consequences for animal performance, such as growth rate and reproductive output. We explore the adaptive significance of such variability and hypothesize that while a reduction in the P/O ratio is energetically costly, it may be associated with advantages in terms of somatic maintenance through reduced production of reactive oxygen species. Finally, we discuss how considering variation in mitochondrial efficiency, together with whole-organism oxygen consumption, can permit a better understanding of the relationship between energy metabolism and life history for studies in evolutionary ecology.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00414/52509/53322.pdf
DOI:10.1098/rspb.2015.1028
https://archimer.ifremer.fr/doc/00414/52509/
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| Editor: |
Royal Soc
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| Formato: |
application/pdf
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| Fonte: |
Proceedings Of The Royal Society B-biological Sciences (0962-8452) (Royal Soc), 2015-08 , Vol. 282 , N. 1812 , P. 14-22
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| Direitos: |
2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
info:eu-repo/semantics/openAccess
restricted use
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