Shark teeth can resist ocean acidification
First published: 13 January 2022 Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects organisms that have body parts made of calcium phosp...
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/134260 2024-05-19T07:46:26+00:00 Shark teeth can resist ocean acidification Leung, J.Y.S. Nagelkerken, I. Pistevos, J.C.A. Xie, Z. Zhang, S. Connell, S.D. 2022 https://hdl.handle.net/2440/134260 https://doi.org/10.1111/gcb.16052 en eng Wiley http://purl.org/au-research/grants/arc/FT0991953 http://purl.org/au-research/grants/arc/FT120100183 http://purl.org/au-research/grants/arc/DP200103152 Global Change Biology, 2022; 28(7):2286-2295 1354-1013 1365-2486 https://hdl.handle.net/2440/134260 doi:10.1111/gcb.16052 Leung, J.Y.S. [0000-0001-5846-3401] Nagelkerken, I. [0000-0003-4499-3940] Pistevos, J.C.A. [0000-0001-8081-7069] Connell, S.D. [0000-0002-5350-6852] © 2022 John Wiley & Sons Ltd. http://dx.doi.org/10.1111/gcb.16052 Adaptation biomineralization climate change elevated CO₂ plasticity shark teeth warming Journal article 2022 ftunivadelaidedl https://doi.org/10.1111/gcb.16052 2024-05-01T00:02:04Z First published: 13 January 2022 Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects organisms that have body parts made of calcium phosphate minerals (e.g. shark teeth), which may also be impacted by the ‘corrosive’ effect of acidified seawater. Thus, we examined the effect of ocean acidification and warming on the mechanical properties of shark teeth (Port Jackson shark, Heterodontus portusjacksoni), and assessed whether their mineralogical properties can be modified in response to predicted near-future seawater pH (–0.3 units) and temperature (+3°C) changes. We found that warming resulted in the production of more brittle teeth (higher elastic modulus and lower mechanical resilience) that were more vulnerable to physical damage. Yet, when combined with ocean acidification, the durability of teeth increased (i.e. less prone to physical damage due to the production of more elastic teeth) so that they did not differ from those raised under ambient conditions. The teeth were chiefly made of fluorapatite (Ca₅(PO₄)₃F), with increased fluoride content under ocean acidification that was associated with increased crystallinity. The increased precipitation of this highly insoluble mineral under ocean acidification suggests that the sharks could modulate and enhance biomineralization to produce teeth which are more resistant to corrosion. This adaptive mineralogical adjustment could allow some shark species to maintain durability and functionality of their teeth, which underpins a fundamental component of predation and sustenance of the trophic dynamics of future oceans. Jonathan Y.S. Leung, Ivan Nagelkerken, Jennifer C.A. Pistevos, Zonghan Xie, Sam Zhang, Sean D. Connell Article in Journal/Newspaper Ocean acidification The University of Adelaide: Digital Library Global Change Biology 28 7 2286 2295 |
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Open Polar |
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The University of Adelaide: Digital Library |
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ftunivadelaidedl |
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English |
topic |
Adaptation biomineralization climate change elevated CO₂ plasticity shark teeth warming |
spellingShingle |
Adaptation biomineralization climate change elevated CO₂ plasticity shark teeth warming Leung, J.Y.S. Nagelkerken, I. Pistevos, J.C.A. Xie, Z. Zhang, S. Connell, S.D. Shark teeth can resist ocean acidification |
topic_facet |
Adaptation biomineralization climate change elevated CO₂ plasticity shark teeth warming |
description |
First published: 13 January 2022 Ocean acidification can cause dissolution of calcium carbonate minerals in biological structures of many marine organisms, which can be exacerbated by warming. However, it is still unclear whether this also affects organisms that have body parts made of calcium phosphate minerals (e.g. shark teeth), which may also be impacted by the ‘corrosive’ effect of acidified seawater. Thus, we examined the effect of ocean acidification and warming on the mechanical properties of shark teeth (Port Jackson shark, Heterodontus portusjacksoni), and assessed whether their mineralogical properties can be modified in response to predicted near-future seawater pH (–0.3 units) and temperature (+3°C) changes. We found that warming resulted in the production of more brittle teeth (higher elastic modulus and lower mechanical resilience) that were more vulnerable to physical damage. Yet, when combined with ocean acidification, the durability of teeth increased (i.e. less prone to physical damage due to the production of more elastic teeth) so that they did not differ from those raised under ambient conditions. The teeth were chiefly made of fluorapatite (Ca₅(PO₄)₃F), with increased fluoride content under ocean acidification that was associated with increased crystallinity. The increased precipitation of this highly insoluble mineral under ocean acidification suggests that the sharks could modulate and enhance biomineralization to produce teeth which are more resistant to corrosion. This adaptive mineralogical adjustment could allow some shark species to maintain durability and functionality of their teeth, which underpins a fundamental component of predation and sustenance of the trophic dynamics of future oceans. Jonathan Y.S. Leung, Ivan Nagelkerken, Jennifer C.A. Pistevos, Zonghan Xie, Sam Zhang, Sean D. Connell |
format |
Article in Journal/Newspaper |
author |
Leung, J.Y.S. Nagelkerken, I. Pistevos, J.C.A. Xie, Z. Zhang, S. Connell, S.D. |
author_facet |
Leung, J.Y.S. Nagelkerken, I. Pistevos, J.C.A. Xie, Z. Zhang, S. Connell, S.D. |
author_sort |
Leung, J.Y.S. |
title |
Shark teeth can resist ocean acidification |
title_short |
Shark teeth can resist ocean acidification |
title_full |
Shark teeth can resist ocean acidification |
title_fullStr |
Shark teeth can resist ocean acidification |
title_full_unstemmed |
Shark teeth can resist ocean acidification |
title_sort |
shark teeth can resist ocean acidification |
publisher |
Wiley |
publishDate |
2022 |
url |
https://hdl.handle.net/2440/134260 https://doi.org/10.1111/gcb.16052 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
http://dx.doi.org/10.1111/gcb.16052 |
op_relation |
http://purl.org/au-research/grants/arc/FT0991953 http://purl.org/au-research/grants/arc/FT120100183 http://purl.org/au-research/grants/arc/DP200103152 Global Change Biology, 2022; 28(7):2286-2295 1354-1013 1365-2486 https://hdl.handle.net/2440/134260 doi:10.1111/gcb.16052 Leung, J.Y.S. [0000-0001-5846-3401] Nagelkerken, I. [0000-0003-4499-3940] Pistevos, J.C.A. [0000-0001-8081-7069] Connell, S.D. [0000-0002-5350-6852] |
op_rights |
© 2022 John Wiley & Sons Ltd. |
op_doi |
https://doi.org/10.1111/gcb.16052 |
container_title |
Global Change Biology |
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28 |
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7 |
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2286 |
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2295 |
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