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Tolerance limit for fish growth exceeded by warming waters


Neuheimer, AB and Thresher, RE and Lyle, JM and Semmens, JM, Tolerance limit for fish growth exceeded by warming waters, Nature Climate Change, 1, (2) pp. 110-113. ISSN 1758-678X (2011) [Refereed Article]

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Copyright © 2011 Nature Publishing Group

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DOI: doi:10.1038/NCLIMATE1084


Climate change can affect organisms both directly, by affecting their physiology, growth, and behaviour1, and indirectly, for example through effects on ecosystem structure and function1,2.For ectotherms, or ‘cold-blooded’ animals, warming will directly affect their metabolism, with growth rates in temperate species predicted to increase initially as temperatures rise, but then decline as individuals struggle to maintain cardiac function and respiration in the face of increased metabolic demands3,4. We provide evidence consistent with this prediction for a marine fish (Cheilodactylus spectabilis) in the Tasman Sea; one of the most rapidly warming regions of the Southern Hemisphere ocean5. We estimated changes in the species’growth rate over a 90-year period using otoliths—bony structures that fish use for orientation and detection of movement—and compared these changes to temperature trends across the species’ distribution. Increasing temperatures coincide with increased growth for populations in the middle of the species range, but with reduced growth for those at the warm northern edge of the species’ distribution, indicating that temperatures may have already reached levels associated with increased metabolic costs. If warming continues, the direct metabolic effects of increasing temperatures on this species may lead to declining productivity and range contraction.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fish physiology and genetics
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Wild caught fin fish (excl. tuna)
UTAS Author:Lyle, JM (Associate Professor Jeremy Lyle)
UTAS Author:Semmens, JM (Professor Jayson Semmens)
ID Code:70531
Year Published:2011
Web of Science® Times Cited:171
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2011-06-27
Last Modified:2012-04-04
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