CO 2 induced seawater acidification impacts survival and development of European eel embryos
Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO 2 ) emissions or from excessive biological CO 2 production in aquaculture systems. This study investigated CO 2 effects on embryos of the European eel (Anguilla anguilla), a catadromous fish that...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2022
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/dd767e87-ad3e-45e9-a81f-198d37116b34 https://doi.org/10.1371/journal.pone.0267228 https://backend.orbit.dtu.dk/ws/files/274384935/journal.pone.0267228.pdf |
id |
ftdtupubl:oai:pure.atira.dk:publications/dd767e87-ad3e-45e9-a81f-198d37116b34 |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/dd767e87-ad3e-45e9-a81f-198d37116b34 2024-09-09T19:00:45+00:00 CO 2 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. 2022 application/pdf https://orbit.dtu.dk/en/publications/dd767e87-ad3e-45e9-a81f-198d37116b34 https://doi.org/10.1371/journal.pone.0267228 https://backend.orbit.dtu.dk/ws/files/274384935/journal.pone.0267228.pdf eng eng https://orbit.dtu.dk/en/publications/dd767e87-ad3e-45e9-a81f-198d37116b34 info:eu-repo/semantics/openAccess Sganga , D E , Dahlke , F T , Sørensen , S R , Butts , I A E , Tomkiewicz , J , Mazurais , D , Servili , A , Bertolini , F & Politis , S N 2022 , ' CO 2 induced seawater acidification impacts survival and development of European eel embryos ' , PLOS ONE , vol. 17 , no. 4 , e0267228 . https://doi.org/10.1371/journal.pone.0267228 /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2022 ftdtupubl https://doi.org/10.1371/journal.pone.0267228 2024-07-29T23:50:18Z Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO 2 ) emissions or from excessive biological CO 2 production in aquaculture systems. This study investigated CO 2 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/CO 2 levels representing "control" (pH 8.1, 300 μatm CO2), end-of-century climate change ("intermediate", pH 7.6, 900 μatm CO 2 ) and "extreme" aquaculture conditions (pH 7.1, 3000 μatm CO 2 ). 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 ( GABAAα6b, 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 ... Article in Journal/Newspaper Anguilla anguilla European eel Technical University of Denmark: DTU Orbit PLOS ONE 17 4 e0267228 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Sganga, Daniela E. Dahlke, Flemming T. Sørensen, Sune R. Butts, Ian A. E. Tomkiewicz, Jonna Mazurais, David Servili, Arianna Bertolini, Francesca Politis, Sebastian N. CO 2 induced seawater acidification impacts survival and development of European eel embryos |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Fish embryos may be vulnerable to seawater acidification resulting from anthropogenic carbon dioxide (CO 2 ) emissions or from excessive biological CO 2 production in aquaculture systems. This study investigated CO 2 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/CO 2 levels representing "control" (pH 8.1, 300 μatm CO2), end-of-century climate change ("intermediate", pH 7.6, 900 μatm CO 2 ) and "extreme" aquaculture conditions (pH 7.1, 3000 μatm CO 2 ). 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 ( GABAAα6b, 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 ... |
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 |
CO 2 induced seawater acidification impacts survival and development of European eel embryos |
title_short |
CO 2 induced seawater acidification impacts survival and development of European eel embryos |
title_full |
CO 2 induced seawater acidification impacts survival and development of European eel embryos |
title_fullStr |
CO 2 induced seawater acidification impacts survival and development of European eel embryos |
title_full_unstemmed |
CO 2 induced seawater acidification impacts survival and development of European eel embryos |
title_sort |
co 2 induced seawater acidification impacts survival and development of european eel embryos |
publishDate |
2022 |
url |
https://orbit.dtu.dk/en/publications/dd767e87-ad3e-45e9-a81f-198d37116b34 https://doi.org/10.1371/journal.pone.0267228 https://backend.orbit.dtu.dk/ws/files/274384935/journal.pone.0267228.pdf |
genre |
Anguilla anguilla European eel |
genre_facet |
Anguilla anguilla European eel |
op_source |
Sganga , D E , Dahlke , F T , Sørensen , S R , Butts , I A E , Tomkiewicz , J , Mazurais , D , Servili , A , Bertolini , F & Politis , S N 2022 , ' CO 2 induced seawater acidification impacts survival and development of European eel embryos ' , PLOS ONE , vol. 17 , no. 4 , e0267228 . https://doi.org/10.1371/journal.pone.0267228 |
op_relation |
https://orbit.dtu.dk/en/publications/dd767e87-ad3e-45e9-a81f-198d37116b34 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0267228 |
container_title |
PLOS ONE |
container_volume |
17 |
container_issue |
4 |
container_start_page |
e0267228 |
_version_ |
1809941828547379200 |