Thermal limits and adaptation in marine Antarctic ectotherms: an integrative view

A cause and effect understanding of thermal limitation and adaptation at various levels of biological organization is crucial in the elaboration of how the Antarctic climate has shaped the functional properties of extant Antarctic fauna. At the same time, this understanding requires an integrative v...

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Bibliographic Details
Published in:Philosophical transactions of the Royal Society of London. Series B. Biological sciences 2007-12, Vol.362 (1488), p.2233-2258
Main Authors: Pörtner, Hans O, Peck, Lloyd, Somero, George
Format: Article
Language:English
Subjects:
Adaptation, Physiological
Animals
Antarctic
Antarctic Regions
Biological adaptation
Body Temperature Regulation - physiology
Climate models
Ecosystem
Enzymes
Evolution
Fishes - genetics
Fishes - physiology
Gene Expression Regulation
Genomics
Global Warming
Greenhouse Effect
Heat tolerance
Life History Evolution
Marine
Marine fishes
Marine Invertebrates
Metabolism
Notothenioid Fishes
Oceans and Seas
Oxygen
Species
Thermal Adaptation
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Summary:A cause and effect understanding of thermal limitation and adaptation at various levels of biological organization is crucial in the elaboration of how the Antarctic climate has shaped the functional properties of extant Antarctic fauna. At the same time, this understanding requires an integrative view of how the various levels of biological organization may be intertwined. At all levels analysed, the functional specialization to permanently low temperatures implies reduced tolerance of high temperatures, as a trade-off. Maintenance of membrane fluidity, enzyme kinetic properties (
ISSN:0962-8436
1471-2970
DOI:10.1098/rstb.2006.1947