Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas)
Ocean acidification, due to anthropogenic CO2 absorption by the ocean, may have profound impacts on marine biota. Calcareous organisms are expected to be particularly sensitive due to the decreasing availability of carbonate ions driven by decreasing pH levels. Recently, some studies focused on the...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/207841 2023-07-23T04:18:55+02:00 Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) Gazeau, F. Gattuso, J.-P. Greaves, M. Elderfield, H. Peene, J. Heip, C.H.R. Middelburg, J.J. 2011 image/pdf https://dspace.library.uu.nl/handle/1874/207841 en eng 1932-6203 https://dspace.library.uu.nl/handle/1874/207841 info:eu-repo/semantics/OpenAccess Aardwetenschappen Article 2011 ftunivutrecht 2023-07-01T23:51:25Z Ocean acidification, due to anthropogenic CO2 absorption by the ocean, may have profound impacts on marine biota. Calcareous organisms are expected to be particularly sensitive due to the decreasing availability of carbonate ions driven by decreasing pH levels. Recently, some studies focused on the early life stages of mollusks that are supposedly more sensitive to environmental disturbances than adult stages. Although these studies have shown decreased growth rates and increased proportions of abnormal development under low pH conditions, they did not allow attribution to pH induced changes in physiology or changes due to a decrease in aragonite saturation state. This study aims to assess the impact of several carbonate-system perturbations on the growth of Pacific oyster (Crassostrea gigas) larvae during the first 3 days of development (until shelled D-veliger larvae). Seawater with five different chemistries was obtained by separately manipulating pH, total alkalinity and aragonite saturation state (calcium addition). Results showed that the developmental success and growth rates were not directly affected by changes in pH or aragonite saturation state but were highly correlated with the availability of carbonate ions. In contrast to previous studies, both developmental success into viable Dshaped larvae and growth rates were not significantly altered as long as carbonate ion concentrations were above aragonite saturation levels, but they strongly decreased below saturation levels. These results suggest that the mechanisms used by these organisms to regulate calcification rates are not efficient enough to compensate for the low availability of carbonate ions under corrosive conditions. Article in Journal/Newspaper Crassostrea gigas Ocean acidification Pacific oyster Utrecht University Repository Pacific |
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Utrecht University Repository |
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ftunivutrecht |
language |
English |
topic |
Aardwetenschappen |
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Aardwetenschappen Gazeau, F. Gattuso, J.-P. Greaves, M. Elderfield, H. Peene, J. Heip, C.H.R. Middelburg, J.J. Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
topic_facet |
Aardwetenschappen |
description |
Ocean acidification, due to anthropogenic CO2 absorption by the ocean, may have profound impacts on marine biota. Calcareous organisms are expected to be particularly sensitive due to the decreasing availability of carbonate ions driven by decreasing pH levels. Recently, some studies focused on the early life stages of mollusks that are supposedly more sensitive to environmental disturbances than adult stages. Although these studies have shown decreased growth rates and increased proportions of abnormal development under low pH conditions, they did not allow attribution to pH induced changes in physiology or changes due to a decrease in aragonite saturation state. This study aims to assess the impact of several carbonate-system perturbations on the growth of Pacific oyster (Crassostrea gigas) larvae during the first 3 days of development (until shelled D-veliger larvae). Seawater with five different chemistries was obtained by separately manipulating pH, total alkalinity and aragonite saturation state (calcium addition). Results showed that the developmental success and growth rates were not directly affected by changes in pH or aragonite saturation state but were highly correlated with the availability of carbonate ions. In contrast to previous studies, both developmental success into viable Dshaped larvae and growth rates were not significantly altered as long as carbonate ion concentrations were above aragonite saturation levels, but they strongly decreased below saturation levels. These results suggest that the mechanisms used by these organisms to regulate calcification rates are not efficient enough to compensate for the low availability of carbonate ions under corrosive conditions. |
format |
Article in Journal/Newspaper |
author |
Gazeau, F. Gattuso, J.-P. Greaves, M. Elderfield, H. Peene, J. Heip, C.H.R. Middelburg, J.J. |
author_facet |
Gazeau, F. Gattuso, J.-P. Greaves, M. Elderfield, H. Peene, J. Heip, C.H.R. Middelburg, J.J. |
author_sort |
Gazeau, F. |
title |
Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
title_short |
Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
title_full |
Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
title_fullStr |
Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
title_full_unstemmed |
Effect of carbonate chemistry alteration on the early embryonic development of the Pacific oyster (Crassostrea gigas) |
title_sort |
effect of carbonate chemistry alteration on the early embryonic development of the pacific oyster (crassostrea gigas) |
publishDate |
2011 |
url |
https://dspace.library.uu.nl/handle/1874/207841 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Ocean acidification Pacific oyster |
genre_facet |
Crassostrea gigas Ocean acidification Pacific oyster |
op_relation |
1932-6203 https://dspace.library.uu.nl/handle/1874/207841 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772181617053270016 |