Journal
BIOLOGY LETTERS
Volume 1, Issue 2, Pages 151-154Publisher
ROYAL SOC
DOI: 10.1098/rsbl.2004.0280
Keywords
cardiac scope; climate change; critical swimming speed; metabolism; plasticity
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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.
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