Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua
Abstract Thermal tolerance windows serve as a powerful tool for estimating the vulnerability of marine species and their life stages to increasing temperature means and extremes. However, it remains uncertain to which extent additional drivers, such as ocean acidification, modify organismal response...
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crwiley:10.1111/gcb.13527 2024-09-15T17:55:29+00:00 Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua Dahlke, Flemming T. Leo, Elettra Mark, Felix C. Pörtner, Hans‐Otto Bickmeyer, Ulf Frickenhaus, Stephan Storch, Daniela Bundesministerium für Bildung und Forschung Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research 2016 http://dx.doi.org/10.1111/gcb.13527 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.13527 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13527 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.13527 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 23, issue 4, page 1499-1510 ISSN 1354-1013 1365-2486 journal-article 2016 crwiley https://doi.org/10.1111/gcb.13527 2024-08-20T04:16:20Z Abstract Thermal tolerance windows serve as a powerful tool for estimating the vulnerability of marine species and their life stages to increasing temperature means and extremes. However, it remains uncertain to which extent additional drivers, such as ocean acidification, modify organismal responses to temperature. This study investigated the effects of CO 2 ‐driven ocean acidification on embryonic thermal sensitivity and performance in Atlantic cod, Gadus morhua , from the Kattegat. Fertilized eggs were exposed to factorial combinations of two P CO 2 conditions (400 μ atm vs. 1100 μ atm) and five temperature treatments (0, 3, 6, 9 and 12 °C), which allow identifying both lower and upper thermal tolerance thresholds. We quantified hatching success, oxygen consumption ( M O 2 ) and mitochondrial functioning of embryos as well as larval morphometrics at hatch and the abundance of acid–base‐relevant ionocytes on the yolk sac epithelium of newly hatched larvae. Hatching success was high under ambient spawning conditions (3–6 °C), but decreased towards both cold and warm temperature extremes. Elevated P CO 2 caused a significant decrease in hatching success, particularly at cold (3 and 0 °C) and warm (12 °C) temperatures. Warming imposed limitations to M O 2 and mitochondrial capacities. Elevated P CO 2 stimulated M O 2 at cold and intermediate temperatures, but exacerbated warming‐induced constraints on M O 2 , indicating a synergistic interaction with temperature. Mitochondrial functioning was not affected by P CO 2 . Increased M O 2 in response to elevated P CO 2 was paralleled by reduced larval size at hatch. Finally, ionocyte abundance decreased with increasing temperature, but did not differ between P CO 2 treatments. Our results demonstrate increased thermal sensitivity of cod embryos under future P CO 2 conditions and suggest that acclimation to elevated P CO 2 requires reallocation of limited resources at the expense of embryonic growth. We conclude that ocean acidification constrains the thermal ... Article in Journal/Newspaper atlantic cod Gadus morhua Ocean acidification Wiley Online Library Global Change Biology 23 4 1499 1510 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Thermal tolerance windows serve as a powerful tool for estimating the vulnerability of marine species and their life stages to increasing temperature means and extremes. However, it remains uncertain to which extent additional drivers, such as ocean acidification, modify organismal responses to temperature. This study investigated the effects of CO 2 ‐driven ocean acidification on embryonic thermal sensitivity and performance in Atlantic cod, Gadus morhua , from the Kattegat. Fertilized eggs were exposed to factorial combinations of two P CO 2 conditions (400 μ atm vs. 1100 μ atm) and five temperature treatments (0, 3, 6, 9 and 12 °C), which allow identifying both lower and upper thermal tolerance thresholds. We quantified hatching success, oxygen consumption ( M O 2 ) and mitochondrial functioning of embryos as well as larval morphometrics at hatch and the abundance of acid–base‐relevant ionocytes on the yolk sac epithelium of newly hatched larvae. Hatching success was high under ambient spawning conditions (3–6 °C), but decreased towards both cold and warm temperature extremes. Elevated P CO 2 caused a significant decrease in hatching success, particularly at cold (3 and 0 °C) and warm (12 °C) temperatures. Warming imposed limitations to M O 2 and mitochondrial capacities. Elevated P CO 2 stimulated M O 2 at cold and intermediate temperatures, but exacerbated warming‐induced constraints on M O 2 , indicating a synergistic interaction with temperature. Mitochondrial functioning was not affected by P CO 2 . Increased M O 2 in response to elevated P CO 2 was paralleled by reduced larval size at hatch. Finally, ionocyte abundance decreased with increasing temperature, but did not differ between P CO 2 treatments. Our results demonstrate increased thermal sensitivity of cod embryos under future P CO 2 conditions and suggest that acclimation to elevated P CO 2 requires reallocation of limited resources at the expense of embryonic growth. We conclude that ocean acidification constrains the thermal ... |
author2 |
Bundesministerium für Bildung und Forschung Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research |
format |
Article in Journal/Newspaper |
author |
Dahlke, Flemming T. Leo, Elettra Mark, Felix C. Pörtner, Hans‐Otto Bickmeyer, Ulf Frickenhaus, Stephan Storch, Daniela |
spellingShingle |
Dahlke, Flemming T. Leo, Elettra Mark, Felix C. Pörtner, Hans‐Otto Bickmeyer, Ulf Frickenhaus, Stephan Storch, Daniela Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
author_facet |
Dahlke, Flemming T. Leo, Elettra Mark, Felix C. Pörtner, Hans‐Otto Bickmeyer, Ulf Frickenhaus, Stephan Storch, Daniela |
author_sort |
Dahlke, Flemming T. |
title |
Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
title_short |
Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
title_full |
Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
title_fullStr |
Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
title_full_unstemmed |
Effects of ocean acidification increase embryonic sensitivity to thermal extremes in Atlantic cod, Gadus morhua |
title_sort |
effects of ocean acidification increase embryonic sensitivity to thermal extremes in atlantic cod, gadus morhua |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/gcb.13527 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.13527 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.13527 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.13527 |
genre |
atlantic cod Gadus morhua Ocean acidification |
genre_facet |
atlantic cod Gadus morhua Ocean acidification |
op_source |
Global Change Biology volume 23, issue 4, page 1499-1510 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.13527 |
container_title |
Global Change Biology |
container_volume |
23 |
container_issue |
4 |
container_start_page |
1499 |
op_container_end_page |
1510 |
_version_ |
1810431764741488640 |