热适应性范式的证伪：南极鱼类对升高温度的补偿
A falsification of the thermal specialization paradigm: compensation for elevated temperatures in Antarctic fishes.
作者信息
Seebacher Frank, Davison William, Lowe Cara J, Franklin Craig E
机构信息
Integrative Physiology, School of Biological Sciences, University of Sydney, NSW, Australia.
出版信息
Biol Lett. 2005 Jun 22;1(2):151-4. doi: 10.1098/rsbl.2004.0280.
Abstract
Specialization to a particular environment is one of the main factors used to explain species distributions. Antarctic fishes are often cited as a classic example to illustrate the specialization process and are regarded as the archetypal stenotherms. Here we show that the Antarctic fish Pagothenia borchgrevinki has retained the capacity to compensate for chronic temperature change. By displaying astounding plasticity in cardiovascular response and metabolic control, the fishes maintained locomotory performance at elevated temperatures. Our falsification of the specialization paradigm indicates that the effect of climate change on species distribution and extinction may be overestimated by current models of global warming.
摘要
对特定环境的特化是用于解释物种分布的主要因素之一。南极鱼类常被引为说明特化过程的经典例子，并被视为典型的狭温动物。我们在此表明，南极鱼类博氏南冰䲢保留了补偿长期温度变化的能力。通过在心血管反应和代谢控制方面表现出惊人的可塑性，这些鱼类在温度升高时维持了运动性能。我们对特化范式的证伪表明，气候变化对物种分布和灭绝的影响可能被当前的全球变暖模型高估了。
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