Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2
The average pH of surface oceans has decreased by 0.1 unit since industrialization and is expected to decrease by another 0.3–0.7 units before the year 2300 due to the absorption of anthropogenic CO2. This human-caused pH change is posing serious threats and challenges to the Pacific oyster (Crassos...
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ftpubmed:oai:pubmedcentral.nih.gov:3665819 2023-05-15T15:58:19+02:00 Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 Ginger, Ko W. K. Vera, Chan B. S. R, Dineshram Dennis, Choi K. S. Adela, Li J. Yu, Ziniu Thiyagarajan, Vengatesen 2013-05-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665819 http://www.ncbi.nlm.nih.gov/pubmed/23724027 https://doi.org/10.1371/journal.pone.0064147 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665819 http://www.ncbi.nlm.nih.gov/pubmed/23724027 http://dx.doi.org/10.1371/journal.pone.0064147 This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2013 ftpubmed https://doi.org/10.1371/journal.pone.0064147 2013-09-05T00:19:51Z The average pH of surface oceans has decreased by 0.1 unit since industrialization and is expected to decrease by another 0.3–0.7 units before the year 2300 due to the absorption of anthropogenic CO2. This human-caused pH change is posing serious threats and challenges to the Pacific oyster (Crassostrea gigas), especially to their larval stages. Our knowledge of the effect of reduced pH on C. gigas larvae presently relies presumptively on four short-term (<4 days) survival and growth studies. Using multiple physiological measurements and life stages, the effects of long-term (40 days) exposure to pH 8.1, 7.7 and 7.4 on larval shell growth, metamorphosis, respiration and filtration rates at the time of metamorphosis, along with the juvenile shell growth and structure of the C. gigas, were examined in this study. The mean survival and growth rates were not affected by pH. The metabolic, feeding and metamorphosis rates of pediveliger larvae were similar, between pH 8.1 and 7.7. The pediveligers at pH 7.4 showed reduced weight-specific metabolic and filtration rates, yet were able to sustain a more rapid post-settlement growth rate. However, no evidence suggested that low pH treatments resulted in alterations to the shell ultrastructures (SEM images) or elemental compositions (i.e., Mg/Ca and Sr/Ca ratios). Thus, larval and post-larval forms of the C. gigas in the Yellow Sea are probably resistant to elevated CO2 and decreased near-future pH scenarios. The pre-adapted ability to resist a wide range of decreased pH may provide C. gigas with the necessary tolerance to withstand rapid pH changes over the coming century. Text Crassostrea gigas Pacific oyster PubMed Central (PMC) Pacific PLoS ONE 8 5 e64147 |
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Research Article Ginger, Ko W. K. Vera, Chan B. S. R, Dineshram Dennis, Choi K. S. Adela, Li J. Yu, Ziniu Thiyagarajan, Vengatesen Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
topic_facet |
Research Article |
description |
The average pH of surface oceans has decreased by 0.1 unit since industrialization and is expected to decrease by another 0.3–0.7 units before the year 2300 due to the absorption of anthropogenic CO2. This human-caused pH change is posing serious threats and challenges to the Pacific oyster (Crassostrea gigas), especially to their larval stages. Our knowledge of the effect of reduced pH on C. gigas larvae presently relies presumptively on four short-term (<4 days) survival and growth studies. Using multiple physiological measurements and life stages, the effects of long-term (40 days) exposure to pH 8.1, 7.7 and 7.4 on larval shell growth, metamorphosis, respiration and filtration rates at the time of metamorphosis, along with the juvenile shell growth and structure of the C. gigas, were examined in this study. The mean survival and growth rates were not affected by pH. The metabolic, feeding and metamorphosis rates of pediveliger larvae were similar, between pH 8.1 and 7.7. The pediveligers at pH 7.4 showed reduced weight-specific metabolic and filtration rates, yet were able to sustain a more rapid post-settlement growth rate. However, no evidence suggested that low pH treatments resulted in alterations to the shell ultrastructures (SEM images) or elemental compositions (i.e., Mg/Ca and Sr/Ca ratios). Thus, larval and post-larval forms of the C. gigas in the Yellow Sea are probably resistant to elevated CO2 and decreased near-future pH scenarios. The pre-adapted ability to resist a wide range of decreased pH may provide C. gigas with the necessary tolerance to withstand rapid pH changes over the coming century. |
format |
Text |
author |
Ginger, Ko W. K. Vera, Chan B. S. R, Dineshram Dennis, Choi K. S. Adela, Li J. Yu, Ziniu Thiyagarajan, Vengatesen |
author_facet |
Ginger, Ko W. K. Vera, Chan B. S. R, Dineshram Dennis, Choi K. S. Adela, Li J. Yu, Ziniu Thiyagarajan, Vengatesen |
author_sort |
Ginger, Ko W. K. |
title |
Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
title_short |
Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
title_full |
Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
title_fullStr |
Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
title_full_unstemmed |
Larval and Post-Larval Stages of Pacific Oyster (Crassostrea gigas) Are Resistant to Elevated CO2 |
title_sort |
larval and post-larval stages of pacific oyster (crassostrea gigas) are resistant to elevated co2 |
publisher |
Public Library of Science |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665819 http://www.ncbi.nlm.nih.gov/pubmed/23724027 https://doi.org/10.1371/journal.pone.0064147 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665819 http://www.ncbi.nlm.nih.gov/pubmed/23724027 http://dx.doi.org/10.1371/journal.pone.0064147 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0064147 |
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PLoS ONE |
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8 |
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5 |
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e64147 |
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