Examinando por Autor "Cortes, Pablo A."

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    Editorial: Ecological and evolutionary relevance of phenotypic plasticity in a changing world
    (Frontiers Media S.A., 2023-02) Ivimey-Cook, Edward R.; Cortes, Pablo A.; Carter, Mauricio J.
    Understanding the ecological and evolutionary consequences of phenotypic plasticity, the ability of an individual genotype to produce different phenotypes in response to environmental variability, is crucial to consider in light of the rapid change in global environmental conditions that we are now experiencing (Kingsolver and Buckley, 2017). Whilst the evolutionary potential to respond to these novel environments is still debatable, increasing our knowledge of such a process gives us indispensable information into the mechanisms that will underpin the changes to an organism's distributional range and local extinction probability (Merilä and Hendry, 2014). This Research Topic aimed to bring together a wealth of different eco-physiological disciplines, from evolution to physiology, to better understand the mechanisms that allow organisms both at the individual and at the population level, to maximize fitness and survival in response to changing environments.
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    Temperature variability and metabolic adaptation in terrestrial and aquatic ectotherms
    (Elsevier, 2023-07) Carter, Mauricio J.; Cortes, Pablo A.; Rezende, Enrico L.
    Thermodynamics is a major factor determining rates of energy expenditure, rates of biochemical dynamics, and ultimately the biological and ecological processes linked with resilience to global warming in ectothermic organisms. Nonetheless, whether ectothermic organisms exhibit general adaptive metabolic responses to cope with worldwide variation in thermal conditions has remained as an open question. Here we combine a model comparison approach with a global dataset of standard metabolic rates (SMR), including 1,160 measurements across 788 species of aquatic invertebrates, insects, fishes, amphibians and reptiles, to investigate the association between metabolic rates and environmental temperatures in their respective habitats. Our analyses suggest that variation in SMR after removing allometric and thermodynamic effects is best explained by the temperature range encountered across seasons, which always provided a better fit than the average temperature for the hottest and coldest month and mean annual temperatures. This pattern was consistent across taxonomic groups and robust to sensitivity analyses. Nonetheless, aquatic and terrestrial lineages responded differently to seasonality, with SMR declining – 6.8% °C−1 of thermal range across seasons in aquatic organisms and increasing 2.8% °C−1 in terrestrial organisms. These responses may reflect alternative strategies to mitigate the impact of increments in warmer temperatures on energy expenditure, either by means of metabolic reduction in thermally homogeneous water bodies or effective behavioral thermoregulation to exploit temperature heterogeneity on land. © 2023 Elsevier Ltd