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	10959203
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. Copyright © 2020, American Association for the Advancement of Science.
关键词	oxygen acclimatization animal classification climate change fish growth, development and aging heat life cycle stage metabolism oxygen consumption phylogeny Acclimatization Animals Climate Change Fishes Hot Temperature Life Cycle Stages Oxygen Oxygen Consumption Phylogeny
语种	英语
来源机构	Science (New York, N.Y.)
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133381
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]. Science (New York, N.Y.),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.,369(6499).
MLA	Dahlke F.T.,et al."Thermal bottlenecks in the life cycle define climate vulnerability of fish".369.6499(2020).