Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.

Thecosome pteropods (pelagic mollusks) can play a key role in the food web of various marine ecosystems. They are a food source for zooplankton or higher predators such as fishes, whales and birds that is particularly important in high latitude areas. Since they harbor a highly soluble aragonitic sh...

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Autores principales:	Steeve Comeau, Ross Jeffree, Jean-Louis Teyssié, Jean-Pierre Gattuso
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2010
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/29e53e253581400eab723473760c6934
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spelling	oai:doaj.org-article:29e53e253581400eab723473760c69342021-12-02T20:20:26ZResponse of the Arctic pteropod Limacina helicina to projected future environmental conditions.1932-620310.1371/journal.pone.0011362https://doaj.org/article/29e53e253581400eab723473760c69342010-06-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20613868/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Thecosome pteropods (pelagic mollusks) can play a key role in the food web of various marine ecosystems. They are a food source for zooplankton or higher predators such as fishes, whales and birds that is particularly important in high latitude areas. Since they harbor a highly soluble aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO(2) emissions. The effect of changes in the seawater chemistry was investigated on Limacina helicina, a key species of Arctic pelagic ecosystems. Individuals were kept in the laboratory under controlled pCO(2) levels of 280, 380, 550, 760 and 1020 microatm and at control (0 degrees C) and elevated (4 degrees C) temperatures. The respiration rate was unaffected by pCO(2) at control temperature, but significantly increased as a function of the pCO(2) level at elevated temperature. pCO(2) had no effect on the gut clearance rate at either temperature. Precipitation of CaCO(3), measured as the incorporation of (45)Ca, significantly declined as a function of pCO(2) at both temperatures. The decrease in calcium carbonate precipitation was highly correlated to the aragonite saturation state. Even though this study demonstrates that pteropods are able to precipitate calcium carbonate at low aragonite saturation state, the results support the current concern for the future of Arctic pteropods, as the production of their shell appears to be very sensitive to decreased pH. A decline of pteropod populations would likely cause dramatic changes to various pelagic ecosystems.Steeve ComeauRoss JeffreeJean-Louis TeyssiéJean-Pierre GattusoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 5, Iss 6, p e11362 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Steeve Comeau Ross Jeffree Jean-Louis Teyssié Jean-Pierre Gattuso Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
description	Thecosome pteropods (pelagic mollusks) can play a key role in the food web of various marine ecosystems. They are a food source for zooplankton or higher predators such as fishes, whales and birds that is particularly important in high latitude areas. Since they harbor a highly soluble aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO(2) emissions. The effect of changes in the seawater chemistry was investigated on Limacina helicina, a key species of Arctic pelagic ecosystems. Individuals were kept in the laboratory under controlled pCO(2) levels of 280, 380, 550, 760 and 1020 microatm and at control (0 degrees C) and elevated (4 degrees C) temperatures. The respiration rate was unaffected by pCO(2) at control temperature, but significantly increased as a function of the pCO(2) level at elevated temperature. pCO(2) had no effect on the gut clearance rate at either temperature. Precipitation of CaCO(3), measured as the incorporation of (45)Ca, significantly declined as a function of pCO(2) at both temperatures. The decrease in calcium carbonate precipitation was highly correlated to the aragonite saturation state. Even though this study demonstrates that pteropods are able to precipitate calcium carbonate at low aragonite saturation state, the results support the current concern for the future of Arctic pteropods, as the production of their shell appears to be very sensitive to decreased pH. A decline of pteropod populations would likely cause dramatic changes to various pelagic ecosystems.
format	article
author	Steeve Comeau Ross Jeffree Jean-Louis Teyssié Jean-Pierre Gattuso
author_facet	Steeve Comeau Ross Jeffree Jean-Louis Teyssié Jean-Pierre Gattuso
author_sort	Steeve Comeau
title	Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
title_short	Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
title_full	Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
title_fullStr	Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
title_full_unstemmed	Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.
title_sort	response of the arctic pteropod limacina helicina to projected future environmental conditions.
publisher	Public Library of Science (PLoS)
publishDate	2010
url	https://doaj.org/article/29e53e253581400eab723473760c6934
work_keys_str_mv	AT steevecomeau responseofthearcticpteropodlimacinahelicinatoprojectedfutureenvironmentalconditions AT rossjeffree responseofthearcticpteropodlimacinahelicinatoprojectedfutureenvironmentalconditions AT jeanlouisteyssie responseofthearcticpteropodlimacinahelicinatoprojectedfutureenvironmentalconditions AT jeanpierregattuso responseofthearcticpteropodlimacinahelicinatoprojectedfutureenvironmentalconditions
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Response of the Arctic pteropod Limacina helicina to projected future environmental conditions.

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