Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis
Several experiments have shown a decrease of growth and calcification of organisms at decreased pH levels. There is a growing interest to focus on early life stages that are believed to be more sensitive to environmental disturbances such as hypercapnia. Here, we present experimental data, acquired...
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ftcopernicus:oai:publications.copernicus.org:bg7272 2023-05-15T17:52:07+02:00 Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis Gazeau, F. Gattuso, J.-P. Dawber, C. Pronker, A. E. Peene, F. Peene, J. Heip, C. H. R. Middelburg, J. J. 2018-09-27 info:eu-repo/semantics/application/pdf https://doi.org/10.5194/bg-7-2051-2010 https://www.biogeosciences.net/7/2051/2010/ eng eng info:eu-repo/grantAgreement/EC/FP7/211384 doi:10.5194/bg-7-2051-2010 https://www.biogeosciences.net/7/2051/2010/ info:eu-repo/semantics/openAccess eISSN: 1726-4189 info:eu-repo/semantics/Text 2018 ftcopernicus https://doi.org/10.5194/bg-7-2051-2010 2019-12-24T09:57:20Z Several experiments have shown a decrease of growth and calcification of organisms at decreased pH levels. There is a growing interest to focus on early life stages that are believed to be more sensitive to environmental disturbances such as hypercapnia. Here, we present experimental data, acquired in a commercial hatchery, demonstrating that the growth of planktonic mussel ( Mytilus edulis ) larvae is significantly affected by a decrease of pH to a level expected for the end of the century. Even though there was no significant effect of a 0.25–0.34 pH unit decrease on hatching and mortality rates during the first 2 days of development nor during the following 13-day period prior to settlement, final shells were respectively 4.5±1.3 and 6.0±2.3% smaller at pH NBS ~7.8 ( p CO 2 ~1100–1200 μatm) than at a control pH NBS of ~8.1 ( p CO 2 ~460–640 μatm). Moreover, a decrease of 12.0±5.4% of shell thickness was observed after 15d of development. More severe impacts were found with a decrease of ~0.5 pH NBS unit during the first 2 days of development which could be attributed to a decrease of calcification due to a slight undersaturation of seawater with respect to aragonite. Indeed, important effects on both hatching and D-veliger shell growth were found. Hatching rates were 24±4% lower while D-veliger shells were 12.7±0.9% smaller at pH NBS ~7.6 ( p CO 2 ~1900 μatm) than at a control pH NBS of ~8.1 ( p CO 2 ~540 μatm). Although these results show that blue mussel larvae are still able to develop a shell in seawater undersaturated with respect to aragonite, the observed decreases of hatching rates and shell growth could lead to a significant decrease of the settlement success. As the environmental conditions considered in this study do not necessarily reflect the natural conditions experienced by this species at the time of spawning, future studies will need to consider the whole larval cycle (from fertilization to settlement) under environmentally relevant conditions in order to investigate the potential ecological and economical losses of a decrease of this species fitness in the field. Other/Unknown Material Ocean acidification Copernicus Publications: E-Journals Biogeosciences 7 7 2051 2060 |
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Copernicus Publications: E-Journals |
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English |
description |
Several experiments have shown a decrease of growth and calcification of organisms at decreased pH levels. There is a growing interest to focus on early life stages that are believed to be more sensitive to environmental disturbances such as hypercapnia. Here, we present experimental data, acquired in a commercial hatchery, demonstrating that the growth of planktonic mussel ( Mytilus edulis ) larvae is significantly affected by a decrease of pH to a level expected for the end of the century. Even though there was no significant effect of a 0.25–0.34 pH unit decrease on hatching and mortality rates during the first 2 days of development nor during the following 13-day period prior to settlement, final shells were respectively 4.5±1.3 and 6.0±2.3% smaller at pH NBS ~7.8 ( p CO 2 ~1100–1200 μatm) than at a control pH NBS of ~8.1 ( p CO 2 ~460–640 μatm). Moreover, a decrease of 12.0±5.4% of shell thickness was observed after 15d of development. More severe impacts were found with a decrease of ~0.5 pH NBS unit during the first 2 days of development which could be attributed to a decrease of calcification due to a slight undersaturation of seawater with respect to aragonite. Indeed, important effects on both hatching and D-veliger shell growth were found. Hatching rates were 24±4% lower while D-veliger shells were 12.7±0.9% smaller at pH NBS ~7.6 ( p CO 2 ~1900 μatm) than at a control pH NBS of ~8.1 ( p CO 2 ~540 μatm). Although these results show that blue mussel larvae are still able to develop a shell in seawater undersaturated with respect to aragonite, the observed decreases of hatching rates and shell growth could lead to a significant decrease of the settlement success. As the environmental conditions considered in this study do not necessarily reflect the natural conditions experienced by this species at the time of spawning, future studies will need to consider the whole larval cycle (from fertilization to settlement) under environmentally relevant conditions in order to investigate the potential ecological and economical losses of a decrease of this species fitness in the field. |
format |
Other/Unknown Material |
author |
Gazeau, F. Gattuso, J.-P. Dawber, C. Pronker, A. E. Peene, F. Peene, J. Heip, C. H. R. Middelburg, J. J. |
spellingShingle |
Gazeau, F. Gattuso, J.-P. Dawber, C. Pronker, A. E. Peene, F. Peene, J. Heip, C. H. R. Middelburg, J. J. Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
author_facet |
Gazeau, F. Gattuso, J.-P. Dawber, C. Pronker, A. E. Peene, F. Peene, J. Heip, C. H. R. Middelburg, J. J. |
author_sort |
Gazeau, F. |
title |
Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
title_short |
Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
title_full |
Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
title_fullStr |
Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
title_full_unstemmed |
Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis |
title_sort |
effect of ocean acidification on the early life stages of the blue mussel mytilus edulis |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-7-2051-2010 https://www.biogeosciences.net/7/2051/2010/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
eISSN: 1726-4189 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/211384 doi:10.5194/bg-7-2051-2010 https://www.biogeosciences.net/7/2051/2010/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-7-2051-2010 |
container_title |
Biogeosciences |
container_volume |
7 |
container_issue |
7 |
container_start_page |
2051 |
op_container_end_page |
2060 |
_version_ |
1766159453205299200 |