Mesothermic fishes face high fuel demands and overheating risk in warming oceans

• 成果类型: Article
• 署名作者: Payne, Nicholas L.; Snelling, Edward P.; Peralta-Maraver, Ignacio; Cade, David E.; Chapple, Taylor K.; McInturf, Alexandra G.; Watanabe, Yuuki Y.; Sims, David W.; Queiroz, Nuno; da Costa, Ivo; Sousa, Lara L.; Goldbogen, Jeremy A.; Dolton, Haley R.; Jackson, Andrew L.
• 署名单位: Trinity College Dublin; University of Pretoria; University of Pretoria; University of Granada; University of Granada; Stanford University; Oregon State University; Graduate University for Advanced Studies - Japan; Marine Biological Association United Kingdom; University of Southampton; NERC National Oceanography Centre; Universidade do Porto
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adt2981
• 发表日期: 2026-04-16
• 页码: 301-305
• 关键词: ATLANTIC BLUEFIN TUNA; THUNNUS-THYNNUS; temperature; sharks; endothermy; EVOLUTION; size; energetics; habitat; rates

摘要

Body size and temperature set metabolic rates and the pace of life, yet our understanding of the energetics of large fishes is uncertain, especially of warm-bodied mesotherms, which can heavily influence marine food webs. We developed an approach to estimate metabolic heat production in fishes, revealing how routine energy expenditure scales with size and temperature from 1-milligram larvae up to 3-tonne megaplanktivorous sharks. We found that mesotherms use approximately four times more energy than ectotherms use and identified a scaling mismatch in which rates of heat production increase faster than heat loss as body size increases, with larger fish becoming increasingly warm bodied. This scaling imbalance creates an overheating predicament for large mesotherms, helping to explain their cooler biogeographies. Contemporary mesotherms face high fuel demands and overheating risks, which is a concern given their disproportionate demise during prior climate shifts.