Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario
Sea urchins, ecologically important herbivores of shallow subtidal temperate reefs, are considered particularly threatened in a future ocean acidification scenario, since their carbonate structures (skeleton and grazing ap- paratus) are made up of the very soluble high-magnesium calcite, particularl...
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Online Access: | http://hdl.handle.net/11567/995164 https://doi.org/10.1016/j.marenvres.2018.12.002 |
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ftunivgenova:oai:iris.unige.it:11567/995164 2024-04-21T08:09:45+00:00 Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe 2019 ELETTRONICO http://hdl.handle.net/11567/995164 https://doi.org/10.1016/j.marenvres.2018.12.002 eng eng Elsevier info:eu-repo/semantics/altIdentifier/wos/WOS:000461523500007 volume:144 firstpage:56 lastpage:61 numberofpages:6 journal:MARINE ENVIRONMENTAL RESEARCH info:eu-repo/grantAgreement/EC/FP7/211384 http://hdl.handle.net/11567/995164 doi:10.1016/j.marenvres.2018.12.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85058931555 info:eu-repo/semantics/closedAccess info:eu-repo/semantics/article 2019 ftunivgenova https://doi.org/10.1016/j.marenvres.2018.12.002 2024-03-28T01:19:36Z Sea urchins, ecologically important herbivores of shallow subtidal temperate reefs, are considered particularly threatened in a future ocean acidification scenario, since their carbonate structures (skeleton and grazing ap- paratus) are made up of the very soluble high-magnesium calcite, particularly sensitive to a decrease in pH. The biomechanical properties of their skeletal structures are of great importance for their individual fitness, because the skeleton provides the means for locomotion, grazing and protection from predators. Sea urchin skeleton is composed of discrete calcite plates attached to each other at sutures by organic ligaments. The present study addressed the fate of the sea urchin Paracentrotus lividus (Lamarck, 1816) skeleton in acidified oceans, taking into account the combined effect of reduced pH and macroalgal diet, with potential cascading consequences at the ecosystem level. A breaking test on individual plates of juvenile specimens fed different macroalgal diets has been performed, teasing apart plate strength and stiffness from general robustness. Results showed no direct short-term effect of a decrease in seawater pH nor of the macroalgal diet on single plate mechanical properties. Nevertheless, results from apical plates, the ones presumably formed during the experimental period, provided an indication of a possible diet-mediated response, with sea urchins fed the more calcified macroalga sustaining higher forces before breakage than the one fed the non-calcified algae. This, on the long term, may produce bottom-up effects on sea urchins, leading to potential shifts in the ecosystem equilibrium under an ocean acidified scenario. Article in Journal/Newspaper Ocean acidification Università degli Studi di Genova: CINECA IRIS Marine Environmental Research 144 56 61 |
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Open Polar |
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Università degli Studi di Genova: CINECA IRIS |
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language |
English |
description |
Sea urchins, ecologically important herbivores of shallow subtidal temperate reefs, are considered particularly threatened in a future ocean acidification scenario, since their carbonate structures (skeleton and grazing ap- paratus) are made up of the very soluble high-magnesium calcite, particularly sensitive to a decrease in pH. The biomechanical properties of their skeletal structures are of great importance for their individual fitness, because the skeleton provides the means for locomotion, grazing and protection from predators. Sea urchin skeleton is composed of discrete calcite plates attached to each other at sutures by organic ligaments. The present study addressed the fate of the sea urchin Paracentrotus lividus (Lamarck, 1816) skeleton in acidified oceans, taking into account the combined effect of reduced pH and macroalgal diet, with potential cascading consequences at the ecosystem level. A breaking test on individual plates of juvenile specimens fed different macroalgal diets has been performed, teasing apart plate strength and stiffness from general robustness. Results showed no direct short-term effect of a decrease in seawater pH nor of the macroalgal diet on single plate mechanical properties. Nevertheless, results from apical plates, the ones presumably formed during the experimental period, provided an indication of a possible diet-mediated response, with sea urchins fed the more calcified macroalga sustaining higher forces before breakage than the one fed the non-calcified algae. This, on the long term, may produce bottom-up effects on sea urchins, leading to potential shifts in the ecosystem equilibrium under an ocean acidified scenario. |
author2 |
Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe |
format |
Article in Journal/Newspaper |
author |
Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe |
spellingShingle |
Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
author_facet |
Asnaghi, Valentina Collard, Marie Mangialajo, Luisa Gattuso, Jean-Pierre Dubois, Philippe |
author_sort |
Asnaghi, Valentina |
title |
Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
title_short |
Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
title_full |
Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
title_fullStr |
Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
title_full_unstemmed |
Bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin Paracentrotus lividus (Lamarck, 1816) in an acidified ocean scenario |
title_sort |
bottom-up effects on biomechanical properties of the skeletal plates of the sea urchin paracentrotus lividus (lamarck, 1816) in an acidified ocean scenario |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/11567/995164 https://doi.org/10.1016/j.marenvres.2018.12.002 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000461523500007 volume:144 firstpage:56 lastpage:61 numberofpages:6 journal:MARINE ENVIRONMENTAL RESEARCH info:eu-repo/grantAgreement/EC/FP7/211384 http://hdl.handle.net/11567/995164 doi:10.1016/j.marenvres.2018.12.002 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85058931555 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.marenvres.2018.12.002 |
container_title |
Marine Environmental Research |
container_volume |
144 |
container_start_page |
56 |
op_container_end_page |
61 |
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1796950960957816832 |