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dc.contributor.authorSánchez‐González, Jorge Rubén
dc.contributor.authorNicieza, Alfredo G.
dc.description.abstractBody shape and metabolic rate can be important determinants of animal performance, yet often their effects on influential traits are evaluated in a non-integrated way. This creates an important gap because the integration between shape and metabolism may be crucial to evaluate metabolic scaling theories. Here, we measured standard metabolic rate in 1- and 2-years old juvenile brown trout Salmo trutta, and used a geometric morphometrics approach to extricate the effects of ontogeny and size on the link between shape and metabolic scaling. We evidenced near-isometric ontogenetic scaling of metabolic rate with size, but also a biphasic pattern driven by a significant change in metabolic scaling, from positive to negative allometry. Moreover, the change in metabolic allometry parallels an ontogenetic change from elongate to deep-bodied shapes. This is consistent with the dynamic energy budget (DEB) and surface area (SA) theories, but not with the resource transport network theory which predicts increasing allometric exponents for trends towards more robust, three-dimensional bodies. In addition, we found a relationship between body shape and size independent metabolic rate, with a positive correlation between robustness and metabolic rate, which fits well within the view of Pace-of-Life Syndromes (POLS). Finally, our results align with previous studies that question the universality of metabolic scaling exponents and propose other mechanistic models explaining the diversity of metabolic scaling relationships or emphasizing the potential contribution of ecological factors.ca_ES
dc.description.sponsorshipThis work was supported by the Principality of Asturias (grant no. CN-07-164); the Spanish Government (grants no. MEC-CGL2004-03239/BOS and MMA/86-2003-1); and FICYT (predoctoral fellowship BP04-147 to J.R.S.G.)ca_ES
dc.publisherOxford university pressca_ES
dc.relation.isformatofReproducció del document publicat a
dc.relation.ispartofCurrent zoology, 2022, p. 1-10ca_ES
dc.rightscc-by-cn (c) Sánchez‐González et al., 2022ca_ES
dc.subjectBiphasic allometric scalingca_ES
dc.subjectOntogenetic allometryca_ES
dc.subjectMetabolic rateca_ES
dc.titleDeclining metabolic scaling parallels an ontogenetic change from elongate to deep-bodied shapes in juvenile Brown troutca_ES

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cc-by-cn (c)  Sánchez‐González et al., 2022
Except where otherwise noted, this item's license is described as cc-by-cn (c) Sánchez‐González et al., 2022