Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula
Carnivorous zooplankton is a key element to the energy transfer through the arctic food web, linking lipid rich herbivores to the top predators. We investigated the growth and lipid dynamic of the Arctic pelagic amphipod Themisto libellula in Kongsfjorden (Svalbard, 79 degrees N) from May to October...
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ftinsu:oai:HAL:hal-03502032v1 2024-02-11T10:00:52+01:00 Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula Noyon, Margaux Narcy, Fanny Gasparini, Stephane Mayzaud, Patrick Ocean Sciences & Marine Food Security Port Elizabeth, South Africa Nelson Mandela University Port Elizabeth Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2011 https://hal.science/hal-03502032 https://doi.org/10.1007/s00227-010-1615-1 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-010-1615-1 hal-03502032 https://hal.science/hal-03502032 doi:10.1007/s00227-010-1615-1 PUBMEDCENTRAL: PMC3873011 ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-03502032 Marine Biology, 2011, 158 (4), pp.883-892. ⟨10.1007/s00227-010-1615-1⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2011 ftinsu https://doi.org/10.1007/s00227-010-1615-1 2024-01-24T17:30:27Z Carnivorous zooplankton is a key element to the energy transfer through the arctic food web, linking lipid rich herbivores to the top predators. We investigated the growth and lipid dynamic of the Arctic pelagic amphipod Themisto libellula in Kongsfjorden (Svalbard, 79 degrees N) from May to October 2007. Additional samplings were performed in spring and summer 2006 and further north in Rijpfjorden (80 degrees N), in September 2006 and 2007. In Kongsfjorden, the first free-swimming stages (3 mm) appeared early May and reached their adult length (25 mm), in October. During their first year, they grew according to a Von Bertalanffy model and most probably constituted a single cohort. Juveniles had the highest growth rate (0.19 mm day(-1)) and revealed relatively low total lipid (TL) content (about 2.5% wet weight (WW)) with phospholipids as the major lipid class. Sub-adults showed a distinct decrease of growth rates which coincided with the increase of neutral lipid storage, reflecting a switch in energy allocation, from somatic growth to lipid storage. Indeed wax esters (WE) increased up to 48.5% TL on average in adults in 2006 while triacylglycerols (TAG) remained almost constant below 25.2% TL. The absence of lipid accumulation (in disproportion of the weight) in 2007 could be explained by a higher metabolism of T. libellula or preys of lower quality. In Rijpfjorden, adults in their second year continued accumulating lipid (up to 10% WW) with high and similar proportions of both lipid classes, WE and TAG. We highlighted that T. libellula exhibited a variable lipid metabolism along its life cycle depending on its physiological needs and environmental conditions. Article in Journal/Newspaper Arctic Kongsfjord* Kongsfjorden Rijpfjord* Svalbard Themisto Themisto libellula Zooplankton Institut national des sciences de l'Univers: HAL-INSU Arctic Rijpfjorden ENVELOPE(22.188,22.188,80.165,80.165) Svalbard Marine Biology 158 4 883 892 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Noyon, Margaux Narcy, Fanny Gasparini, Stephane Mayzaud, Patrick Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Carnivorous zooplankton is a key element to the energy transfer through the arctic food web, linking lipid rich herbivores to the top predators. We investigated the growth and lipid dynamic of the Arctic pelagic amphipod Themisto libellula in Kongsfjorden (Svalbard, 79 degrees N) from May to October 2007. Additional samplings were performed in spring and summer 2006 and further north in Rijpfjorden (80 degrees N), in September 2006 and 2007. In Kongsfjorden, the first free-swimming stages (3 mm) appeared early May and reached their adult length (25 mm), in October. During their first year, they grew according to a Von Bertalanffy model and most probably constituted a single cohort. Juveniles had the highest growth rate (0.19 mm day(-1)) and revealed relatively low total lipid (TL) content (about 2.5% wet weight (WW)) with phospholipids as the major lipid class. Sub-adults showed a distinct decrease of growth rates which coincided with the increase of neutral lipid storage, reflecting a switch in energy allocation, from somatic growth to lipid storage. Indeed wax esters (WE) increased up to 48.5% TL on average in adults in 2006 while triacylglycerols (TAG) remained almost constant below 25.2% TL. The absence of lipid accumulation (in disproportion of the weight) in 2007 could be explained by a higher metabolism of T. libellula or preys of lower quality. In Rijpfjorden, adults in their second year continued accumulating lipid (up to 10% WW) with high and similar proportions of both lipid classes, WE and TAG. We highlighted that T. libellula exhibited a variable lipid metabolism along its life cycle depending on its physiological needs and environmental conditions. |
author2 |
Ocean Sciences & Marine Food Security Port Elizabeth, South Africa Nelson Mandela University Port Elizabeth Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Noyon, Margaux Narcy, Fanny Gasparini, Stephane Mayzaud, Patrick |
author_facet |
Noyon, Margaux Narcy, Fanny Gasparini, Stephane Mayzaud, Patrick |
author_sort |
Noyon, Margaux |
title |
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
title_short |
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
title_full |
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
title_fullStr |
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
title_full_unstemmed |
Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
title_sort |
growth and lipid class composition of the arctic pelagic amphipod themisto libellula |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-03502032 https://doi.org/10.1007/s00227-010-1615-1 |
long_lat |
ENVELOPE(22.188,22.188,80.165,80.165) |
geographic |
Arctic Rijpfjorden Svalbard |
geographic_facet |
Arctic Rijpfjorden Svalbard |
genre |
Arctic Kongsfjord* Kongsfjorden Rijpfjord* Svalbard Themisto Themisto libellula Zooplankton |
genre_facet |
Arctic Kongsfjord* Kongsfjorden Rijpfjord* Svalbard Themisto Themisto libellula Zooplankton |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.science/hal-03502032 Marine Biology, 2011, 158 (4), pp.883-892. ⟨10.1007/s00227-010-1615-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-010-1615-1 hal-03502032 https://hal.science/hal-03502032 doi:10.1007/s00227-010-1615-1 PUBMEDCENTRAL: PMC3873011 |
op_doi |
https://doi.org/10.1007/s00227-010-1615-1 |
container_title |
Marine Biology |
container_volume |
158 |
container_issue |
4 |
container_start_page |
883 |
op_container_end_page |
892 |
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1790596585280765952 |