Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification
Anthropogenic emissions of carbon dioxide (CO2) from fossil fuel combustion and deforestation are rapidly increasing the atmospheric concentration of CO2 and reducing the pH of the oceans. This study shows that predicted near-future levels of ocean acidification have significant negative effects on...
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2009
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ftnerc:oai:nora.nerc.ac.uk:10723 2023-05-15T17:50:57+02:00 Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification Watson, Sue-Ann Southgate, Paul C. Tyler, Paul. A Peck, Lloyd S. 2009 http://nora.nerc.ac.uk/id/eprint/10723/ unknown National Shellfisheries Association Watson, Sue-Ann; Southgate, Paul C.; Tyler, Paul. A; Peck, Lloyd S. orcid:0000-0003-3479-6791 . 2009 Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification. Journal of Shellfish Research, 28 (3). 431-437. https://doi.org/10.2983/035.028.0302 <https://doi.org/10.2983/035.028.0302> Marine Sciences Meteorology and Climatology Biology and Microbiology Ecology and Environment Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.2983/035.028.0302 2023-02-04T19:26:54Z Anthropogenic emissions of carbon dioxide (CO2) from fossil fuel combustion and deforestation are rapidly increasing the atmospheric concentration of CO2 and reducing the pH of the oceans. This study shows that predicted near-future levels of ocean acidification have significant negative effects on early larval development of the Sydney rock oyster Saccostrea glomerata (Gould, 1850). CO2 was added to seawater to produce pH levels set at 8.1 (control), 7.8, and 7.6 (actual pH values were 8.11, 7.81, and 7.64, respectively). These treatments represent present-day surface ocean pH, as well as upper (Delta pH approximate to -0.3) and lower (Delta pH approximate to -0.5) pH predictions for the surface oceans in 2100. With decreasing pH, survival of S. glomerata larvae decreased, and growth and development were retarded. Larval survival decreased by 43% at pH 7.8 and by 72% at pH 7.6. Antero-posterior measurement (APM) was reduced by 6.3% at pH 7.8 and 8.7% at pH 7.6 and dorso-ventral measurement (DVM) was reduced by 5.1% at pH 7.8 and 7.5% at pH 7.6. The percentage of empty shells remaining from dead larvae decreased by 16% at pH 7.8 and by 90% at pH 7.6 indicating that the majority of empty shells dissolved within 7 days at pH 7.6. Scanning election microscope images of 8-day-old larvae show abnormalities on the shell surface at low pH suggesting (1) problems with shell deposition, (2) retarded periostracum formation, and/or (3) increased shell dissolution. Larval life-history stages are considered particularly susceptible to climate change, and this study shows that S. glomerata larvae are sensitive to a high-CO2 world and are, specifically, negatively affected by exposure to pH conditions predicted for the world's oceans for the year 2010. Article in Journal/Newspaper Ocean acidification Natural Environment Research Council: NERC Open Research Archive Journal of Shellfish Research 28 3 431 437 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Meteorology and Climatology Biology and Microbiology Ecology and Environment |
spellingShingle |
Marine Sciences Meteorology and Climatology Biology and Microbiology Ecology and Environment Watson, Sue-Ann Southgate, Paul C. Tyler, Paul. A Peck, Lloyd S. Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
topic_facet |
Marine Sciences Meteorology and Climatology Biology and Microbiology Ecology and Environment |
description |
Anthropogenic emissions of carbon dioxide (CO2) from fossil fuel combustion and deforestation are rapidly increasing the atmospheric concentration of CO2 and reducing the pH of the oceans. This study shows that predicted near-future levels of ocean acidification have significant negative effects on early larval development of the Sydney rock oyster Saccostrea glomerata (Gould, 1850). CO2 was added to seawater to produce pH levels set at 8.1 (control), 7.8, and 7.6 (actual pH values were 8.11, 7.81, and 7.64, respectively). These treatments represent present-day surface ocean pH, as well as upper (Delta pH approximate to -0.3) and lower (Delta pH approximate to -0.5) pH predictions for the surface oceans in 2100. With decreasing pH, survival of S. glomerata larvae decreased, and growth and development were retarded. Larval survival decreased by 43% at pH 7.8 and by 72% at pH 7.6. Antero-posterior measurement (APM) was reduced by 6.3% at pH 7.8 and 8.7% at pH 7.6 and dorso-ventral measurement (DVM) was reduced by 5.1% at pH 7.8 and 7.5% at pH 7.6. The percentage of empty shells remaining from dead larvae decreased by 16% at pH 7.8 and by 90% at pH 7.6 indicating that the majority of empty shells dissolved within 7 days at pH 7.6. Scanning election microscope images of 8-day-old larvae show abnormalities on the shell surface at low pH suggesting (1) problems with shell deposition, (2) retarded periostracum formation, and/or (3) increased shell dissolution. Larval life-history stages are considered particularly susceptible to climate change, and this study shows that S. glomerata larvae are sensitive to a high-CO2 world and are, specifically, negatively affected by exposure to pH conditions predicted for the world's oceans for the year 2010. |
format |
Article in Journal/Newspaper |
author |
Watson, Sue-Ann Southgate, Paul C. Tyler, Paul. A Peck, Lloyd S. |
author_facet |
Watson, Sue-Ann Southgate, Paul C. Tyler, Paul. A Peck, Lloyd S. |
author_sort |
Watson, Sue-Ann |
title |
Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
title_short |
Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
title_full |
Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
title_fullStr |
Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
title_full_unstemmed |
Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification |
title_sort |
early larval development of the sydney rock oyster saccostrea glomerata under near-future predictions of co2-driven ocean acidification |
publisher |
National Shellfisheries Association |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/10723/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Watson, Sue-Ann; Southgate, Paul C.; Tyler, Paul. A; Peck, Lloyd S. orcid:0000-0003-3479-6791 . 2009 Early larval development of the Sydney rock oyster Saccostrea glomerata under near-future predictions of CO2-driven ocean acidification. Journal of Shellfish Research, 28 (3). 431-437. https://doi.org/10.2983/035.028.0302 <https://doi.org/10.2983/035.028.0302> |
op_doi |
https://doi.org/10.2983/035.028.0302 |
container_title |
Journal of Shellfish Research |
container_volume |
28 |
container_issue |
3 |
container_start_page |
431 |
op_container_end_page |
437 |
_version_ |
1766157890980151296 |