INVESTIGADORES
GOMEZ LAICH Agustina Marta
artículos
Título:
The relationship between oxygen consumption and body acceleration in a range of species
Autor/es:
HALSEY, L.; SHEPARD, E.L.C.; QUINTANA, F.; GÓMEZ LAICH, A.; GREEN, J.A.; WILSON, R.P.
Revista:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
Editorial:
Elsevier
Referencias:
Lugar: Vancouver; Año: 2009 vol. 152 p. 197 - 202
ISSN:
1095-6433
Resumen:
The ability to measure the energy expenditure of free-ranging animals is of great importance but the
techniques available each have their limitations. Recently, as an alternative to more established techniques,
an integrated measure of body acceleration termed overall dynamic body acceleration (ODBA) has been used
as a calibrated proxy for rate of oxygen consumption (V̇O2) and hence metabolic rate. The present study tested
the potential of this technique, firstly by expanding the range of species for which the V̇
O2?ODBA relationship has been de fi ned and secondly by undertaking a validation exercise to explore the accuracy of predictions
made using ODBA. V̇O2?ODBA relationships during terrestrial locomotion were established for several bipedal
and quadrupedal endotherms and compiled with similar relationships previously determined in other
species. A model incorporating all of these species showed that ODBA is an excellent predictor of V̇O 2
but there is variation in the V̇O 2?ODBA relationship between species, and further variation within some species.
Including measurements such as body mass and structural size in prediction equations might further
improve the predictive power of the ?ODBA technique? and eliminate species-specific differences. In the
validation exercise, estimate errors were calculated for the species-specific predictive equations. The use of
ODBA to estimate V̇O 2 was valid across all species examined and may show a greater potential for estimating
energy expenditure for individual animals than other techniques.