Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis
Reduction in sea-ice thickness and cover is expected to lead to earlier underwater light penetration and thus earlier onset of the spring bloom and a longer open water production in the Arctic. The goal of this study was to understand how these climate-induced changes in light and food regimes may i...
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Online Access: | https://hal.science/hal-02558579 https://doi.org/10.1007/s00300-013-1417-2 |
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ftinsu:oai:HAL:hal-02558579v1 2024-02-11T09:59:52+01:00 Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis Morata, Nathalie Soreide, Janne E. Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) The University Centre in Svalbard (UNIS) ANR-11-PDOC-0018,ECOTAB,Effet des changements climatiques sur le benthos en Arctique(2011) 2015 https://hal.science/hal-02558579 https://doi.org/10.1007/s00300-013-1417-2 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-013-1417-2 hal-02558579 https://hal.science/hal-02558579 doi:10.1007/s00300-013-1417-2 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-02558579 Polar Biology, 2015, 38 (1), pp.67-73. ⟨10.1007/s00300-013-1417-2⟩ ACL chlorophyll-a Climate change Respiration variability sea-ice Zooplankton adaptations barents sea beaufort sea Diapause Feeding experiment finmarchicus storage Svalbard [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.1007/s00300-013-1417-2 2024-01-24T17:34:27Z Reduction in sea-ice thickness and cover is expected to lead to earlier underwater light penetration and thus earlier onset of the spring bloom and a longer open water production in the Arctic. The goal of this study was to understand how these climate-induced changes in light and food regimes may impact the key zooplankton grazer Calanus glacialis CV. We studied this copepod's metabolic response to starvation (filtered sea water; FSW) and algal food (Food) under two different light regimes (light vs. dark) when it was in dormancy (diapause) in winter (November) and active in summer (July). Respiration was measured as indicator of metabolism and was measured for 9 days for copepods exposed to: Dark+FSW, Dark+Food, Light+FSW and Light+Food. The in situ respiration in winter was three times lower than in summer. In winter, light was the main factor to increase the copepod's metabolism to a level comparable with that of active copepods in summer, but respiration only remained high if food was present. In summer, it was the combined effect of light and Food that increased the respiration, although Food seemed more important than light with time. Copepods reduced their metabolism with time when food was absent, regardless of the light regime, probably preparing for diapause. These results suggest that C. glacialis can quickly adapt to a changing light and food regime in the Arctic, being able to wake up from diapause if light and thus food appear and postpone its diapause if the food availability is still favorable. Article in Journal/Newspaper Arctic copepod Arctic Barents Sea Beaufort Sea Calanus glacialis Climate change Polar Biology Sea ice Svalbard Zooplankton Copepods Institut national des sciences de l'Univers: HAL-INSU Arctic Barents Sea Svalbard Polar Biology 38 1 67 73 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
ACL chlorophyll-a Climate change Respiration variability sea-ice Zooplankton adaptations barents sea beaufort sea Diapause Feeding experiment finmarchicus storage Svalbard [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
ACL chlorophyll-a Climate change Respiration variability sea-ice Zooplankton adaptations barents sea beaufort sea Diapause Feeding experiment finmarchicus storage Svalbard [SDE.BE]Environmental Sciences/Biodiversity and Ecology Morata, Nathalie Soreide, Janne E. Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
topic_facet |
ACL chlorophyll-a Climate change Respiration variability sea-ice Zooplankton adaptations barents sea beaufort sea Diapause Feeding experiment finmarchicus storage Svalbard [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
Reduction in sea-ice thickness and cover is expected to lead to earlier underwater light penetration and thus earlier onset of the spring bloom and a longer open water production in the Arctic. The goal of this study was to understand how these climate-induced changes in light and food regimes may impact the key zooplankton grazer Calanus glacialis CV. We studied this copepod's metabolic response to starvation (filtered sea water; FSW) and algal food (Food) under two different light regimes (light vs. dark) when it was in dormancy (diapause) in winter (November) and active in summer (July). Respiration was measured as indicator of metabolism and was measured for 9 days for copepods exposed to: Dark+FSW, Dark+Food, Light+FSW and Light+Food. The in situ respiration in winter was three times lower than in summer. In winter, light was the main factor to increase the copepod's metabolism to a level comparable with that of active copepods in summer, but respiration only remained high if food was present. In summer, it was the combined effect of light and Food that increased the respiration, although Food seemed more important than light with time. Copepods reduced their metabolism with time when food was absent, regardless of the light regime, probably preparing for diapause. These results suggest that C. glacialis can quickly adapt to a changing light and food regime in the Arctic, being able to wake up from diapause if light and thus food appear and postpone its diapause if the food availability is still favorable. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) The University Centre in Svalbard (UNIS) ANR-11-PDOC-0018,ECOTAB,Effet des changements climatiques sur le benthos en Arctique(2011) |
format |
Article in Journal/Newspaper |
author |
Morata, Nathalie Soreide, Janne E. |
author_facet |
Morata, Nathalie Soreide, Janne E. |
author_sort |
Morata, Nathalie |
title |
Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
title_short |
Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
title_full |
Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
title_fullStr |
Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
title_full_unstemmed |
Effect of light and food on the metabolism of the Arctic copepod Calanus glacialis |
title_sort |
effect of light and food on the metabolism of the arctic copepod calanus glacialis |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-02558579 https://doi.org/10.1007/s00300-013-1417-2 |
geographic |
Arctic Barents Sea Svalbard |
geographic_facet |
Arctic Barents Sea Svalbard |
genre |
Arctic copepod Arctic Barents Sea Beaufort Sea Calanus glacialis Climate change Polar Biology Sea ice Svalbard Zooplankton Copepods |
genre_facet |
Arctic copepod Arctic Barents Sea Beaufort Sea Calanus glacialis Climate change Polar Biology Sea ice Svalbard Zooplankton Copepods |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.science/hal-02558579 Polar Biology, 2015, 38 (1), pp.67-73. ⟨10.1007/s00300-013-1417-2⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-013-1417-2 hal-02558579 https://hal.science/hal-02558579 doi:10.1007/s00300-013-1417-2 |
op_doi |
https://doi.org/10.1007/s00300-013-1417-2 |
container_title |
Polar Biology |
container_volume |
38 |
container_issue |
1 |
container_start_page |
67 |
op_container_end_page |
73 |
_version_ |
1790595598794096640 |