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energy expenditure

  • RESEARCH ARTICLE
    Heat dissipation capacity influences reproductive performance in an aerial insectivore
    Simon Tapper, Joseph J. Nocera, Gary Burness
    Journal of Experimental Biology 2020 223: jeb222232 doi: 10.1242/jeb.222232 Published 22 May 2020

    Editors' Choice: Empirical evidence that the ability to dissipate body heat constrains offspring feeding behaviour in a breeding bird, the tree swallow.

  • RESEARCH ARTICLE
    Skeletal muscle thermogenesis induction by exposure to predator odor
    Erin Gorrell, Ashley Shemery, Jesse Kowalski, Miranda Bodziony, Nhlalala Mavundza, Amber R. Titus, Mark Yoder, Sarah Mull, Lydia A. Heemstra, Jacob G. Wagner, Megan Gibson, Olivia Carey, Diamond Daniel, Nicholas Harvey, Meredith Zendlo, Megan Rich, Scott Everett, Chaitanya K. Gavini, Tariq I. Almundarij, Diane Lorton, Colleen M. Novak
    Journal of Experimental Biology 2020 223: jeb218479 doi: 10.1242/jeb.218479 Published 16 April 2020

    Summary: Exposure to the odor of a predator (ferret) markedly increases rat skeletal muscle temperature; this persists when physical activity is controlled. This is primarily modulated by sympathetic neural connections.

  • RESEARCH ARTICLE
    Slowing down the metabolic engine: impact of early-life corticosterone exposure on adult metabolism in house sparrows (Passer domesticus)
    Sophie M. Dupont, Jacquelyn K. Grace, Olivier Lourdais, François Brischoux, Frédéric Angelier
    Journal of Experimental Biology 2019 222: jeb211771 doi: 10.1242/jeb.211771 Published 25 November 2019

    Highlighted Article: Developmental corticosterone exposure can orient the phenotype towards an energy-saving strategy in adult sparrows and there are both benefits and costs that could be associated with this reduced metabolism.

  • RESEARCH ARTICLE
    How humans initiate energy optimization and converge on their optimal gaits
    Jessica C. Selinger, Jeremy D. Wong, Surabhi N. Simha, J. Maxwell Donelan
    Journal of Experimental Biology 2019 222: jeb198234 doi: 10.1242/jeb.198234 Published 8 October 2019

    Summary: Combining human experiments with computational reinforcement learning models reveals how the nervous system discovers energy optimal gaits.

  • RESEARCH ARTICLE
    Subtle short-term physiological costs of an experimental augmentation of fleas in wild Columbian ground squirrels
    Jeffrey D. Roth, F. Stephen Dobson, François Criscuolo, Pierre Uhlrich, Alexandre Zahariev, Audrey Bergouignan, Vincent A. Viblanc
    Journal of Experimental Biology 2019 222: jeb203588 doi: 10.1242/jeb.203588 Published 17 June 2019

    Summary: Short-term physiological influences of parasite–host interactions in a wild population of Columbian ground squirrels were minimal, suggesting evolutionary cost minimization in both parasites and hosts.

  • RESEARCH ARTICLES
    Regression dilution in energy management patterns
    Lewis G. Halsey, Andrea Perna
    Journal of Experimental Biology 2019 222: jeb197434 doi: 10.1242/jeb.197434 Published 27 March 2019

    Summary: Patterns of energy management in animals inferred from slope estimates from linear regressions of energy expenditure can be affected by regression dilution unless r2 is very high, influencing the accuracy and interpretation of these estimates.

  • SHORT COMMUNICATION
    Glucocorticoid–temperature association is shaped by foraging costs in individual zebra finches
    Blanca Jimeno, Michaela Hau, Simon Verhulst
    Journal of Experimental Biology 2018 221: jeb187880 doi: 10.1242/jeb.187880 Published 27 November 2018

    Summary: The association between baseline corticosterone and temperature was steeper in zebra finches living in a high- versus low-foraging-costs environment, which supports the metabolic explanation of glucocorticoid variation.

  • SHORT COMMUNICATION
    In vivo aerobic metabolism of the rainbow trout gut and the effects of an acute temperature increase and stress event
    Jeroen Brijs, Albin Gräns, Per Hjelmstedt, Erik Sandblom, Nicole van Nuland, Charlotte Berg, Michael Axelsson
    Journal of Experimental Biology 2018 221: jeb180703 doi: 10.1242/jeb.180703 Published 16 July 2018

    Summary: In vivo recordings of gut oxygen uptake in a teleost fish demonstrate a high metabolic sensitivity to an acute temperature increase, as well as the metabolic responses to stress.

  • RESEARCH ARTICLE
    Melatonin attenuates phenotypic flexibility of energy metabolism in a photoresponsive mammal, the Siberian hamster
    Jan S. Boratyński, Małgorzata Jefimow, Michał S. Wojciechowski
    Journal of Experimental Biology 2017 220: 3154-3161; doi: 10.1242/jeb.159517

    Summary: Perception of stress in photoresponsive mammals exposed to short days is reduced, and although they secrete more stress hormones in the cold, their flexibility of energy metabolism is attenuated.

  • SHORT COMMUNICATION
    A different angle: comparative analyses of whole-animal transport costs when running uphill
    Lewis G. Halsey, Craig R. White
    Journal of Experimental Biology 2017 220: 161-166; doi: 10.1242/jeb.142927

    Summary: Across-species analysis of the energy costs to run uphill highlights the importance of considering relative, proportional and absolute measures, and of interpretation within an ecological context, for example, in terms of the energy landscape.

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