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Resumen del producto
Luongo, S.M., N.C., Wegner, Z.R., Skelton, S., Ortega-García, R., Rodríguez-Sánchez, H., Fenix, M., Lake, J.B., O'Sullivan, S., Furukawa & Y.P., Papastamatiou
(2025).
Vertical energy seascapes and diving behaviour modulate metabolic scope ina pelagic predator .
Proceedings of the Royal Society B-Biological Sciences.
292(2045): 20250200.
DOI: 10.1098/rspb.2025.0200.
Vertical energy seascapes and diving behaviour modulate metabolic scope ina pelagic predator
Sarah M. Luongo 1, Nicholas C. Wegner 2, Zachary R. Skelton 3, Sofía Ortega-García 4, Rubén Rodríguez-Sánchez 4, Heather Fenix 5, Meghan Lake 5, John B. O'Sullivan 5, Seishiro Furukawa 6 y Yannis P. Papastamatiou 7
1 Institute of Environment, Florida International University
2 Fisheries Resources Division
3 Ocean Associates Inc
4 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Pesquerías y Biología Marina
5 Monterey Bay Aquarium
6 Japan Fisheries Research and Education Agency
7 Institute for East China Sea Research
Pelagic fishes must obtain resources in prey-sparse habitats and may beconsidered energy speculators with maximization, gambling high energycosts (e.g. metabolism) for a high rate of return (prey capture). Assuch, they may have to carefully use their energy seascape to obtainthe resources necessary for high growth rates. For diving animals, theirenergy seascape will also have a vertical component in addition toa horizontal one, which is rarely considered. Dolphinfish, Coryphaenahippurus, embody the maximization strategy as they have high metabolicrates and fast growth rates. We coupled biologging on wild individualswith lab-based respirometry to estimate dolphinfish swimming metabolicrates and vertical energy seascapes. Dolphinfish performed continuousyo-yo dives with deeper dives at night but higher activity during theday. Dive descents were approximately 27% less costly than the ascents.Fish modulated their behaviour so that metabolic costs during the descent/ascent phases of deeper dives were less than those for shallow dives. Whiletemperature is likely the primary limit of dive depth, the vertical energyseascape may be secondary and limit maximum dive depths. Studies ofpelagic animal energy seascapes should consider the vertical component
that will help determine their ability to access and utilize prey.
Palabras clave: energetics; accelerometry; respirometry; Dolphinfish; metabolic rate
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