Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification
Theoretical models predict that ocean acidification, caused by increased dissolved CO2, will reduce the maximum thermal limits of fishes, thereby increasing their vulnerability to rising ocean temperatures and transient heatwaves. Here, we test this prediction in three species of damselfishes on the...
Published in: | Journal of Experimental Biology |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Company Of Biologists Ltd
2017
|
Subjects: | |
Online Access: | https://eprints.utas.edu.au/26601/ https://eprints.utas.edu.au/26601/1/5392.pdf |
id |
ftunivtasmania:oai:eprints.utas.edu.au:26601 |
---|---|
record_format |
openpolar |
spelling |
ftunivtasmania:oai:eprints.utas.edu.au:26601 2023-05-15T17:49:59+02:00 Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification Clark, TD Roche, DG Binning, SA Speers-Roesch, B Sundin, J 2017 application/pdf https://eprints.utas.edu.au/26601/ https://eprints.utas.edu.au/26601/1/5392.pdf en eng Company Of Biologists Ltd https://eprints.utas.edu.au/26601/1/5392.pdf Clark, TD orcid:0000-0001-8738-3347 , Roche, DG, Binning, SA, Speers-Roesch, B and Sundin, J 2017 , 'Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification' , Journal of Experimental Biology, vol. 220, no. 19 , pp. 3519-3526 , doi:10.1242/jeb.162529 <http://dx.doi.org/10.1242/jeb.162529>. carbon dioxide CO2 critical thermal maximum CTmax Great Barrier Reef climate change climate warming thermal tolerance fish ontogeny Article PeerReviewed 2017 ftunivtasmania https://doi.org/10.1242/jeb.162529 2021-09-13T22:17:34Z Theoretical models predict that ocean acidification, caused by increased dissolved CO2, will reduce the maximum thermal limits of fishes, thereby increasing their vulnerability to rising ocean temperatures and transient heatwaves. Here, we test this prediction in three species of damselfishes on the Great Barrier Reef, Australia. Maximum thermal limits were quantified using critical thermal maxima (CTmax) tests following acclimation to either present-day or end-of-century levels of CO2 for coral reef environments (∼500 or ∼1,000 µatm, respectively). While species differed significantly in their thermal limits, whereby Dischistodus perspicillatus exhibited greater CTmax (37.88±0.03oC; N=47) than Dascyllus aruanus (37.68±0.02oC; N=85) and Acanthochromis polyacanthus (36.58±0.02oC; N=63), end-of-century CO2 had no effect (D. aruanus) or a slightly positive effect (increase in CTmax of 0.16oC in D. perspicillatus and 0.21oC in A. polyacanthus) on CTmax. Contrary to expectations, smaller individuals were equally as resilient to CO2 as larger conspecifics, and CTmax was higher at smaller body sizes in two species. These findings suggest that ocean acidification will not impair the maximum thermal limits of reef fishes, and they highlight the critical role of experimental biology in testing predictions of theoretical models forecasting the consequences of environmental change. Article in Journal/Newspaper Ocean acidification University of Tasmania: UTas ePrints Journal of Experimental Biology |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
carbon dioxide CO2 critical thermal maximum CTmax Great Barrier Reef climate change climate warming thermal tolerance fish ontogeny |
spellingShingle |
carbon dioxide CO2 critical thermal maximum CTmax Great Barrier Reef climate change climate warming thermal tolerance fish ontogeny Clark, TD Roche, DG Binning, SA Speers-Roesch, B Sundin, J Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
topic_facet |
carbon dioxide CO2 critical thermal maximum CTmax Great Barrier Reef climate change climate warming thermal tolerance fish ontogeny |
description |
Theoretical models predict that ocean acidification, caused by increased dissolved CO2, will reduce the maximum thermal limits of fishes, thereby increasing their vulnerability to rising ocean temperatures and transient heatwaves. Here, we test this prediction in three species of damselfishes on the Great Barrier Reef, Australia. Maximum thermal limits were quantified using critical thermal maxima (CTmax) tests following acclimation to either present-day or end-of-century levels of CO2 for coral reef environments (∼500 or ∼1,000 µatm, respectively). While species differed significantly in their thermal limits, whereby Dischistodus perspicillatus exhibited greater CTmax (37.88±0.03oC; N=47) than Dascyllus aruanus (37.68±0.02oC; N=85) and Acanthochromis polyacanthus (36.58±0.02oC; N=63), end-of-century CO2 had no effect (D. aruanus) or a slightly positive effect (increase in CTmax of 0.16oC in D. perspicillatus and 0.21oC in A. polyacanthus) on CTmax. Contrary to expectations, smaller individuals were equally as resilient to CO2 as larger conspecifics, and CTmax was higher at smaller body sizes in two species. These findings suggest that ocean acidification will not impair the maximum thermal limits of reef fishes, and they highlight the critical role of experimental biology in testing predictions of theoretical models forecasting the consequences of environmental change. |
format |
Article in Journal/Newspaper |
author |
Clark, TD Roche, DG Binning, SA Speers-Roesch, B Sundin, J |
author_facet |
Clark, TD Roche, DG Binning, SA Speers-Roesch, B Sundin, J |
author_sort |
Clark, TD |
title |
Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
title_short |
Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
title_full |
Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
title_fullStr |
Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
title_full_unstemmed |
Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
title_sort |
maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification |
publisher |
Company Of Biologists Ltd |
publishDate |
2017 |
url |
https://eprints.utas.edu.au/26601/ https://eprints.utas.edu.au/26601/1/5392.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://eprints.utas.edu.au/26601/1/5392.pdf Clark, TD orcid:0000-0001-8738-3347 , Roche, DG, Binning, SA, Speers-Roesch, B and Sundin, J 2017 , 'Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification' , Journal of Experimental Biology, vol. 220, no. 19 , pp. 3519-3526 , doi:10.1242/jeb.162529 <http://dx.doi.org/10.1242/jeb.162529>. |
op_doi |
https://doi.org/10.1242/jeb.162529 |
container_title |
Journal of Experimental Biology |
_version_ |
1766156544401997824 |