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°N) from May to October 2007. A...
Published in: | Marine Biology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Verlag
2011
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/4012 https://doi.org/10.1007/s00227-010-1615-1 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/4012 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/4012 2023-05-15T14:55:50+02:00 Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula Noyon, Margaux Narcy, Fanny Gasparini, S. Mayzaud, P. 2011 https://hdl.handle.net/10037/4012 https://doi.org/10.1007/s00227-010-1615-1 eng eng Springer Verlag Marine Biology 158(2011) nr. 4 s. 883-892 FRIDAID 835735 doi:10.1007/s00227-010-1615-1 0025-3162 https://hdl.handle.net/10037/4012 URN:NBN:no-uit_munin_3733 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Journal article Tidsskriftartikkel Peer reviewed 2011 ftunivtroemsoe https://doi.org/10.1007/s00227-010-1615-1 2021-06-25T17:53:15Z 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°N) from May to October 2007. Additional samplings were performed in spring and summer 2006 and further north in Rijpfjorden (80°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 University of Tromsø: Munin Open Research Archive Arctic Rijpfjorden ENVELOPE(22.188,22.188,80.165,80.165) Svalbard Marine Biology 158 4 883 892 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Noyon, Margaux Narcy, Fanny Gasparini, S. Mayzaud, P. Growth and lipid class composition of the Arctic pelagic amphipod Themisto libellula |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
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°N) from May to October 2007. Additional samplings were performed in spring and summer 2006 and further north in Rijpfjorden (80°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. |
format |
Article in Journal/Newspaper |
author |
Noyon, Margaux Narcy, Fanny Gasparini, S. Mayzaud, P. |
author_facet |
Noyon, Margaux Narcy, Fanny Gasparini, S. Mayzaud, P. |
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 |
Springer Verlag |
publishDate |
2011 |
url |
https://hdl.handle.net/10037/4012 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_relation |
Marine Biology 158(2011) nr. 4 s. 883-892 FRIDAID 835735 doi:10.1007/s00227-010-1615-1 0025-3162 https://hdl.handle.net/10037/4012 URN:NBN:no-uit_munin_3733 |
op_rights |
openAccess |
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 |
_version_ |
1766327843888824320 |