Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait
International audience Calanoid copepods comprise around 90% of Arctic zooplankton biomass and are fundamental to the ecological and biogeochemical functioning of high-latitude pelagic ecosystems. They accumulate lipid reserves during the productive months and represent an energy-rich food source fo...
Published in: | Frontiers in Marine Science |
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Language: | English |
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Online Access: | https://hal.science/hal-04591345 https://hal.science/hal-04591345/document https://hal.science/hal-04591345/file/fmars-09-981461.pdf https://doi.org/10.3389/fmars.2022.981461 |
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ftinsu:oai:HAL:hal-04591345v1 2024-09-15T18:00:41+00:00 Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait Jenkins, Holly, E. Atherden, Florence Cook, Kathryn, B Anderson, Thomas, R Thornton, Barry Mitchell, Elaine Jacob, Elodie Mayor, Daniel, J National Oceanography Centre (NOC) University of Southampton The James Hutton Institute Scottish Association for Marine Science (SAMS) Institut Pythéas (OSU PYTHEAS) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2022 https://hal.science/hal-04591345 https://hal.science/hal-04591345/document https://hal.science/hal-04591345/file/fmars-09-981461.pdf https://doi.org/10.3389/fmars.2022.981461 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2022.981461 hal-04591345 https://hal.science/hal-04591345 https://hal.science/hal-04591345/document https://hal.science/hal-04591345/file/fmars-09-981461.pdf doi:10.3389/fmars.2022.981461 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04591345 Frontiers in Marine Science, 2022, 9, pp.981461. ⟨10.3389/fmars.2022.981461⟩ arctic copepods reproduction climate change life history zooplankton physiology [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.3389/fmars.2022.981461 2024-06-26T23:53:02Z International audience Calanoid copepods comprise around 90% of Arctic zooplankton biomass and are fundamental to the ecological and biogeochemical functioning of high-latitude pelagic ecosystems. They accumulate lipid reserves during the productive months and represent an energy-rich food source for higher trophic levels. Rapidly changing climate in the Arctic may alter the quantity and composition of the food environment for one of the key copepod species, Calanus finmarchicus , with as yet unquantified effects on its production. Here we present rates of feeding and egg production in female C. finmarchicus exposed to the range of feeding conditions encountered across the Fram Strait in May/June 2018. Carbon (C) budgets were constructed and used to examine the relationship between feeding and growth (= egg production) in these animals. C-specific ingestion rates (mean ± standard deviation) were highly variable, ranging from 0.015 ± 0.004 to 0.645 ± 0.017 day -1 (mean = 0.295 ± 0.223 day -1 ), and were positively correlated with food availability. C-specific egg production rates ranged from 0.00 to 0.049 day -1 (mean = 0.012 ± 0.011) and were not correlated with either food availability or ingestion rate. Calculated gross growth efficiencies (GGE: growth/ingestion) were low, 0.12 ± 0.13 (range = 0.01 to 0.39). The assembled C budgets indicate that the average fraction of ingested food that was surplus to the requirements for egg production, respiration and losses to faecal pellets was 0.17 ± 0.42. We suggest that this excess occurred, at least in part, because many of the incubated females were still undergoing the energetically (C-) expensive process of gonad maturation at the time of sampling, an assertion that is supported by the relatively high C:N (nitrogen) ratios of the incubated females, the typically low egg production rates, and gonad maturation status. Ontogenetic development may thus explain the large variability seen in the relationship between egg production and ingestion. The apparently ... Article in Journal/Newspaper Calanus finmarchicus Climate change Fram Strait Zooplankton Copepods Institut national des sciences de l'Univers: HAL-INSU Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
arctic copepods reproduction climate change life history zooplankton physiology [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
arctic copepods reproduction climate change life history zooplankton physiology [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Jenkins, Holly, E. Atherden, Florence Cook, Kathryn, B Anderson, Thomas, R Thornton, Barry Mitchell, Elaine Jacob, Elodie Mayor, Daniel, J Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
topic_facet |
arctic copepods reproduction climate change life history zooplankton physiology [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Calanoid copepods comprise around 90% of Arctic zooplankton biomass and are fundamental to the ecological and biogeochemical functioning of high-latitude pelagic ecosystems. They accumulate lipid reserves during the productive months and represent an energy-rich food source for higher trophic levels. Rapidly changing climate in the Arctic may alter the quantity and composition of the food environment for one of the key copepod species, Calanus finmarchicus , with as yet unquantified effects on its production. Here we present rates of feeding and egg production in female C. finmarchicus exposed to the range of feeding conditions encountered across the Fram Strait in May/June 2018. Carbon (C) budgets were constructed and used to examine the relationship between feeding and growth (= egg production) in these animals. C-specific ingestion rates (mean ± standard deviation) were highly variable, ranging from 0.015 ± 0.004 to 0.645 ± 0.017 day -1 (mean = 0.295 ± 0.223 day -1 ), and were positively correlated with food availability. C-specific egg production rates ranged from 0.00 to 0.049 day -1 (mean = 0.012 ± 0.011) and were not correlated with either food availability or ingestion rate. Calculated gross growth efficiencies (GGE: growth/ingestion) were low, 0.12 ± 0.13 (range = 0.01 to 0.39). The assembled C budgets indicate that the average fraction of ingested food that was surplus to the requirements for egg production, respiration and losses to faecal pellets was 0.17 ± 0.42. We suggest that this excess occurred, at least in part, because many of the incubated females were still undergoing the energetically (C-) expensive process of gonad maturation at the time of sampling, an assertion that is supported by the relatively high C:N (nitrogen) ratios of the incubated females, the typically low egg production rates, and gonad maturation status. Ontogenetic development may thus explain the large variability seen in the relationship between egg production and ingestion. The apparently ... |
author2 |
National Oceanography Centre (NOC) University of Southampton The James Hutton Institute Scottish Association for Marine Science (SAMS) Institut Pythéas (OSU PYTHEAS) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Jenkins, Holly, E. Atherden, Florence Cook, Kathryn, B Anderson, Thomas, R Thornton, Barry Mitchell, Elaine Jacob, Elodie Mayor, Daniel, J |
author_facet |
Jenkins, Holly, E. Atherden, Florence Cook, Kathryn, B Anderson, Thomas, R Thornton, Barry Mitchell, Elaine Jacob, Elodie Mayor, Daniel, J |
author_sort |
Jenkins, Holly, E. |
title |
Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
title_short |
Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
title_full |
Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
title_fullStr |
Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
title_full_unstemmed |
Grazing, egg production and carbon budgets for Calanus finmarchicus across the Fram Strait |
title_sort |
grazing, egg production and carbon budgets for calanus finmarchicus across the fram strait |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04591345 https://hal.science/hal-04591345/document https://hal.science/hal-04591345/file/fmars-09-981461.pdf https://doi.org/10.3389/fmars.2022.981461 |
genre |
Calanus finmarchicus Climate change Fram Strait Zooplankton Copepods |
genre_facet |
Calanus finmarchicus Climate change Fram Strait Zooplankton Copepods |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04591345 Frontiers in Marine Science, 2022, 9, pp.981461. ⟨10.3389/fmars.2022.981461⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2022.981461 hal-04591345 https://hal.science/hal-04591345 https://hal.science/hal-04591345/document https://hal.science/hal-04591345/file/fmars-09-981461.pdf doi:10.3389/fmars.2022.981461 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2022.981461 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
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1810437852707684352 |