气候变化领域集成服务门户(CCPortal): Thermal bottlenecks in the life cycle define climate vulnerability of fish

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DOI	10.1126/science.aaz3658
	Thermal bottlenecks in the life cycle define climate vulnerability of fish
	Dahlke F.T.; Wohlrab S.; Butzin M.; Pörtner H.-O.
发表日期	2020
ISSN	0036-8075
起始页码	65
结束页码	70
卷号	369 期号:6499
英文摘要	Species' vulnerability to climate change depends on the most temperature-sensitive life stages, but for major animal groups such as fish, life cycle bottlenecks are often not clearly defined. We used observational, experimental, and phylogenetic data to assess stage-specific thermal tolerance metrics for 694 marine and freshwater fish species from all climate zones. Our analysis shows that spawning adults and embryos consistently have narrower tolerance ranges than larvae and nonreproductive adults and are most vulnerable to climate warming. The sequence of stage-specific thermal tolerance corresponds with the oxygen-limitation hypothesis, suggesting a mechanistic link between ontogenetic changes in cardiorespiratory (aerobic) capacity and tolerance to temperature extremes. A logarithmic inverse correlation between the temperature dependence of physiological rates (development and oxygen consumption) and thermal tolerance range is proposed to reflect a fundamental, energetic trade-off in thermal adaptation. Scenario-based climate projections considering the most critical life stages (spawners and embryos) clearly identify the temperature requirements for reproduction as a critical bottleneck in the life cycle of fish. By 2100, depending on the Shared Socioeconomic Pathway (SSP) scenario followed, the percentages of species potentially affected by water temperatures exceeding their tolerance limit for reproduction range from ~10% (SSP 1-1.9) to ~60% (SSP 5-8.5). Efforts to meet ambitious climate targets (SSP 1-1.9) could therefore benefit many fish species and people who depend on healthy fish stocks. © 2020 American Association for the Advancement of Science. All rights reserved.
英文关键词	oxygen; extreme event; hypothesis testing; life cycle; ontogeny; physiological response; spawning; spawning population; trade-off; vulnerability; adult; aerobic capacity; Article; climate; climate warming; development; embryo; environmental temperature; freshwater fish; heat tolerance; life cycle; nonhuman; oxygen consumption; phylogeny; priority journal; spawning; temperature acclimatization; water temperature; acclimatization; animal; classification; climate change; fish; growth, development and aging; heat; life cycle stage; metabolism; Animalia; Acclimatization; Animals; Climate Change; Fishes; Hot Temperature; Life Cycle Stages; Oxygen; Oxygen Consumption; Phylogeny
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243451
作者单位	Helmholtz Centre for Polar and Marine Research, Alfred Wegener Institute, Bremerhaven, 27570, Germany; Helmholtz Institute for Functional Marine Biodiversity, Oldenburg, 26129, Germany; University of Bremen, Bremen, 28359, Germany
推荐引用方式 GB/T 7714	Dahlke F.T.,Wohlrab S.,Butzin M.,et al. Thermal bottlenecks in the life cycle define climate vulnerability of fish[J],2020,369(6499).
APA	Dahlke F.T.,Wohlrab S.,Butzin M.,&Pörtner H.-O..(2020).Thermal bottlenecks in the life cycle define climate vulnerability of fish.Science,369(6499).
MLA	Dahlke F.T.,et al."Thermal bottlenecks in the life cycle define climate vulnerability of fish".Science 369.6499(2020).