Shark teeth can resist ocean acidification
Abstract 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. shar...
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crwiley:10.1111/gcb.16052 2024-09-15T18:27:33+00:00 Shark teeth can resist ocean acidification Leung, Jonathan Y. S. Nagelkerken, Ivan Pistevos, Jennifer C. A. Xie, Zonghan Zhang, Sam Connell, Sean D. Fundamental Research Funds for the Central Universities 2022 http://dx.doi.org/10.1111/gcb.16052 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16052 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16052 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 28, issue 7, page 2286-2295 ISSN 1354-1013 1365-2486 journal-article 2022 crwiley https://doi.org/10.1111/gcb.16052 2024-08-27T04:31:00Z Abstract 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 (Ca 5 (PO 4 ) 3 F), 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. Article in Journal/Newspaper Ocean acidification Wiley Online Library Global Change Biology 28 7 2286 2295 |
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English |
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Abstract 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 (Ca 5 (PO 4 ) 3 F), 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. |
author2 |
Fundamental Research Funds for the Central Universities |
format |
Article in Journal/Newspaper |
author |
Leung, Jonathan Y. S. Nagelkerken, Ivan Pistevos, Jennifer C. A. Xie, Zonghan Zhang, Sam Connell, Sean D. |
spellingShingle |
Leung, Jonathan Y. S. Nagelkerken, Ivan Pistevos, Jennifer C. A. Xie, Zonghan Zhang, Sam Connell, Sean D. Shark teeth can resist ocean acidification |
author_facet |
Leung, Jonathan Y. S. Nagelkerken, Ivan Pistevos, Jennifer C. A. Xie, Zonghan Zhang, Sam Connell, Sean D. |
author_sort |
Leung, Jonathan 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 |
http://dx.doi.org/10.1111/gcb.16052 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16052 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16052 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Global Change Biology volume 28, issue 7, page 2286-2295 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.16052 |
container_title |
Global Change Biology |
container_volume |
28 |
container_issue |
7 |
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2286 |
op_container_end_page |
2295 |
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1810468789122236416 |