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Werner, Iris; Auel, Holger; Kiko, Rainer (2004): Gut content, fatty acid composition and metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.855272, Supplement to: Werner, I et al. (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

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Abstract:
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.
Project(s):
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas (SPP1158)
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Latitude: 76.294900 * Longitude: 23.365800
Date/Time Start: 2003-03-23T00:00:00 * Date/Time End: 2003-03-23T08:21:00
Event(s):
PS64/070-6 * Latitude: 76.294900 * Longitude: 23.365800 * Date/Time Start: 2003-03-23T08:21:00 * Date/Time End: 2003-03-23T00:00:00 * Elevation: -146.0 m * Location: Barents Sea * Campaign: ARK-XIX/1 (PS64) * Basis: Polarstern * Method/Device: Ice station (ICE)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Werner, I; Auel, H; Kiko, R (2004): (Table 1) Gut fullness and content of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6. https://doi.org/10.1594/PANGAEA.855266
  2. Werner, I; Auel, H; Kiko, R (2004): (Table 2) Dry mass, lipid content and fatty acid composition of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6. https://doi.org/10.1594/PANGAEA.855267
  3. Werner, I; Auel, H; Kiko, R (2004): (Table 3) Metabolic rates of the amphipod Anonyx sarsi during POLARSTERN cruise ARK-XIX/1, ice station PS64/070-6. https://doi.org/10.1594/PANGAEA.855268