Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6
During a winter expedition to the western Barents Sea in March 2003, benthic amphipods of the species Anonyx sarsi were observed directly below pack ice. Only males and juveniles [16.0-37.0 mm long, 16.2-120.8 mg dry mass (DM)] were collected. Guts contained macroalgal fibres, fish eggs and flesh fr...
Main Authors: | , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2004
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.855272 https://doi.org/10.1594/PANGAEA.855272 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.855272 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.855272 2023-05-15T13:44:47+02:00 Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 Werner, Iris Auel, Holger Kiko, Rainer LATITUDE: 76.294900 * LONGITUDE: 23.365800 * DATE/TIME START: 2003-03-23T00:00:00 * DATE/TIME END: 2003-03-23T08:21:00 2004-11-25 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.855272 https://doi.org/10.1594/PANGAEA.855272 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.855272 https://doi.org/10.1594/PANGAEA.855272 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Werner, Iris; Auel, Holger; Kiko, Rainer (2004): Occurrence of Anonyx sarsi (Amphipoda: Lysianassoidea) below Arctic pack ice: an example for cryo-benthic coupling? Polar Biology, 27(8), 474-481, https://doi.org/10.1007/s00300-004-0616-2 ARK-XIX/1 Barents Sea ICE Ice station Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS64 PS64/070-6 SPP1158 Dataset 2004 ftpangaea https://doi.org/10.1594/PANGAEA.855272 https://doi.org/10.1007/s00300-004-0616-2 2023-01-20T07:33:37Z During a winter expedition to the western Barents Sea in March 2003, benthic amphipods of the species Anonyx sarsi were observed directly below pack ice. Only males and juveniles [16.0-37.0 mm long, 16.2-120.8 mg dry mass (DM)] were collected. Guts contained macroalgal fibres, fish eggs and flesh from large carrion. Amphipods had very low levels of total lipids (2.7-17.2% DM). Analysis of lipid biomarkers showed that some of the specimens had preyed on pelagic copepods. Individual respiration rates ranged over 0.4-1.7 ml O2/day (mean: 1.2 ml, SD: 0.5 ml). Individual ammonia excretion rates varied between 7.8 µg and 49.3 µg N/day (mean: 30.7 µg, SD: 15.2 µg). The atomic O:N ratio ranged over 35 to 71 (mean: 55, SD: 14), indicating lipid-dominated metabolism. Mass-specific respiration ranged over 9.8-16.6 ml O2/day/g DM (mean: 13.1 ml, SD: 2.2 ml). The metabolic rates of A. sarsi were twice as high as those of the truly sympagic amphipod Gammarus wilkitzkii, which is better adapted to the under-ice habitat by its energy-saving attached lifestyle. It is concluded that males and juveniles of A. sarsi were actively searching for food in the water column and at the ice underside, but that the nutritional status of the amphipods in late Arctic winter was generally very poor. Dataset Antarc* Antarctic Arctic Arctic Barents Sea Gammarus wilkitzkii Polar Biology Sea ice Copepods PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic Barents Sea ENVELOPE(23.365800,23.365800,76.294900,76.294900) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ARK-XIX/1 Barents Sea ICE Ice station Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS64 PS64/070-6 SPP1158 |
spellingShingle |
ARK-XIX/1 Barents Sea ICE Ice station Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS64 PS64/070-6 SPP1158 Werner, Iris Auel, Holger Kiko, Rainer Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
topic_facet |
ARK-XIX/1 Barents Sea ICE Ice station Polarstern Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas PS64 PS64/070-6 SPP1158 |
description |
During a winter expedition to the western Barents Sea in March 2003, benthic amphipods of the species Anonyx sarsi were observed directly below pack ice. Only males and juveniles [16.0-37.0 mm long, 16.2-120.8 mg dry mass (DM)] were collected. Guts contained macroalgal fibres, fish eggs and flesh from large carrion. Amphipods had very low levels of total lipids (2.7-17.2% DM). Analysis of lipid biomarkers showed that some of the specimens had preyed on pelagic copepods. Individual respiration rates ranged over 0.4-1.7 ml O2/day (mean: 1.2 ml, SD: 0.5 ml). Individual ammonia excretion rates varied between 7.8 µg and 49.3 µg N/day (mean: 30.7 µg, SD: 15.2 µg). The atomic O:N ratio ranged over 35 to 71 (mean: 55, SD: 14), indicating lipid-dominated metabolism. Mass-specific respiration ranged over 9.8-16.6 ml O2/day/g DM (mean: 13.1 ml, SD: 2.2 ml). The metabolic rates of A. sarsi were twice as high as those of the truly sympagic amphipod Gammarus wilkitzkii, which is better adapted to the under-ice habitat by its energy-saving attached lifestyle. It is concluded that males and juveniles of A. sarsi were actively searching for food in the water column and at the ice underside, but that the nutritional status of the amphipods in late Arctic winter was generally very poor. |
format |
Dataset |
author |
Werner, Iris Auel, Holger Kiko, Rainer |
author_facet |
Werner, Iris Auel, Holger Kiko, Rainer |
author_sort |
Werner, Iris |
title |
Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
title_short |
Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
title_full |
Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
title_fullStr |
Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
title_full_unstemmed |
Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 |
title_sort |
gut content, fatty acid composition and metabolic rates of the amphipod anonyx sarsi during polarstern cruise ark-xix/1, ice station ps64/070-6 |
publisher |
PANGAEA |
publishDate |
2004 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.855272 https://doi.org/10.1594/PANGAEA.855272 |
op_coverage |
LATITUDE: 76.294900 * LONGITUDE: 23.365800 * DATE/TIME START: 2003-03-23T00:00:00 * DATE/TIME END: 2003-03-23T08:21:00 |
long_lat |
ENVELOPE(23.365800,23.365800,76.294900,76.294900) |
geographic |
Antarctic Arctic Barents Sea |
geographic_facet |
Antarctic Arctic Barents Sea |
genre |
Antarc* Antarctic Arctic Arctic Barents Sea Gammarus wilkitzkii Polar Biology Sea ice Copepods |
genre_facet |
Antarc* Antarctic Arctic Arctic Barents Sea Gammarus wilkitzkii Polar Biology Sea ice Copepods |
op_source |
Supplement to: Werner, Iris; Auel, Holger; Kiko, Rainer (2004): Occurrence of Anonyx sarsi (Amphipoda: Lysianassoidea) below Arctic pack ice: an example for cryo-benthic coupling? Polar Biology, 27(8), 474-481, https://doi.org/10.1007/s00300-004-0616-2 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.855272 https://doi.org/10.1594/PANGAEA.855272 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.855272 https://doi.org/10.1007/s00300-004-0616-2 |
_version_ |
1766206375428358144 |