CO2 induced seawater acidification impacts survival and development of European eel embryos
Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO2) emissions or from excessive biological CO2 production in aquaculture systems. This study investigated CO2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that is...
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Online Access: | https://hdl.handle.net/11585/900886 https://doi.org/10.1371/journal.pone.0267228 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267228 |
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ftunibolognairis:oai:cris.unibo.it:11585/900886 2024-04-14T08:01:04+00:00 CO2 induced seawater acidification impacts survival and development of European eel embryos Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N 2022 ELETTRONICO https://hdl.handle.net/11585/900886 https://doi.org/10.1371/journal.pone.0267228 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267228 eng eng info:eu-repo/semantics/altIdentifier/pmid/35436318 info:eu-repo/semantics/altIdentifier/wos/WOS:000791258900030 volume:17 issue:4 firstpage:1 lastpage:20 numberofpages:20 journal:PLOS ONE https://hdl.handle.net/11585/900886 doi:10.1371/journal.pone.0267228 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85128455999 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267228 info:eu-repo/semantics/openAccess Animal Climate Change Hydrogen-Ion Concentration Seawater Anguilla Carbon Dioxide info:eu-repo/semantics/article 2022 ftunibolognairis https://doi.org/10.1371/journal.pone.0267228 2024-03-21T18:58:10Z Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO2) emissions or from excessive biological CO2 production in aquaculture systems. This study investigated CO2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that is considered at risk from climate change and that is targeted for hatchery production to sustain aquaculture of the species. Eel embryos were reared in three independent recirculation systems with different pH/CO2 levels representing "control" (pH 8.1, 300 mu atm CO2), end-of-century climate change ("intermediate", pH 7.6, 900 mu atm CO2) and "extreme" aquaculture conditions (pH 7.1, 3000 mu atm CO2). Sensitivity analyses were conducted at 4, 24, and 48 hours post-fertilization (hpf) by focusing on development, survival, and expression of genes related to acute stress response (crhr1, crfr2), stress/repair response (hsp70, hsp90), water and solute transport (aqp1, aqp3), acid-base regulation (nkcc1a, ncc, car15), and inhibitory neurotransmission (GABAA alpha 6b, Gabra1). Results revealed that embryos developing at intermediate pH showed similar survival rates to the control, but egg swelling was impaired, resulting in a reduction in egg size with decreasing pH. Embryos exposed to extreme pH had 0.6-fold decrease in survival at 24 hpf and a 0.3-fold change at 48 compared to the control. These observed effects of acidification were not reflected by changes in expression of any of the here studied genes. On the contrary, differential expression was observed along embryonic development independent of treatment, indicating that the underlying regulating systems are under development and that embryos are limited in their ability to regulate molecular responses to acidification. In conclusion, exposure to predicted end-of-century ocean pCO(2) conditions may affect normal development of this species in nature during sensitive early life history stages with limited physiological response capacities, while extreme acidification ... Article in Journal/Newspaper Anguilla anguilla European eel IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) PLOS ONE 17 4 e0267228 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Animal Climate Change Hydrogen-Ion Concentration Seawater Anguilla Carbon Dioxide |
spellingShingle |
Animal Climate Change Hydrogen-Ion Concentration Seawater Anguilla Carbon Dioxide Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N CO2 induced seawater acidification impacts survival and development of European eel embryos |
topic_facet |
Animal Climate Change Hydrogen-Ion Concentration Seawater Anguilla Carbon Dioxide |
description |
Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO2) emissions or from excessive biological CO2 production in aquaculture systems. This study investigated CO2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that is considered at risk from climate change and that is targeted for hatchery production to sustain aquaculture of the species. Eel embryos were reared in three independent recirculation systems with different pH/CO2 levels representing "control" (pH 8.1, 300 mu atm CO2), end-of-century climate change ("intermediate", pH 7.6, 900 mu atm CO2) and "extreme" aquaculture conditions (pH 7.1, 3000 mu atm CO2). Sensitivity analyses were conducted at 4, 24, and 48 hours post-fertilization (hpf) by focusing on development, survival, and expression of genes related to acute stress response (crhr1, crfr2), stress/repair response (hsp70, hsp90), water and solute transport (aqp1, aqp3), acid-base regulation (nkcc1a, ncc, car15), and inhibitory neurotransmission (GABAA alpha 6b, Gabra1). Results revealed that embryos developing at intermediate pH showed similar survival rates to the control, but egg swelling was impaired, resulting in a reduction in egg size with decreasing pH. Embryos exposed to extreme pH had 0.6-fold decrease in survival at 24 hpf and a 0.3-fold change at 48 compared to the control. These observed effects of acidification were not reflected by changes in expression of any of the here studied genes. On the contrary, differential expression was observed along embryonic development independent of treatment, indicating that the underlying regulating systems are under development and that embryos are limited in their ability to regulate molecular responses to acidification. In conclusion, exposure to predicted end-of-century ocean pCO(2) conditions may affect normal development of this species in nature during sensitive early life history stages with limited physiological response capacities, while extreme acidification ... |
author2 |
Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N |
format |
Article in Journal/Newspaper |
author |
Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N |
author_facet |
Sganga, Daniela E Dahlke, Flemming T Sørensen, Sune R Butts, Ian A E Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N |
author_sort |
Sganga, Daniela E |
title |
CO2 induced seawater acidification impacts survival and development of European eel embryos |
title_short |
CO2 induced seawater acidification impacts survival and development of European eel embryos |
title_full |
CO2 induced seawater acidification impacts survival and development of European eel embryos |
title_fullStr |
CO2 induced seawater acidification impacts survival and development of European eel embryos |
title_full_unstemmed |
CO2 induced seawater acidification impacts survival and development of European eel embryos |
title_sort |
co2 induced seawater acidification impacts survival and development of european eel embryos |
publishDate |
2022 |
url |
https://hdl.handle.net/11585/900886 https://doi.org/10.1371/journal.pone.0267228 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267228 |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/35436318 info:eu-repo/semantics/altIdentifier/wos/WOS:000791258900030 volume:17 issue:4 firstpage:1 lastpage:20 numberofpages:20 journal:PLOS ONE https://hdl.handle.net/11585/900886 doi:10.1371/journal.pone.0267228 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85128455999 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267228 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0267228 |
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PLOS ONE |
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17 |
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4 |
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e0267228 |
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