Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses
The gut contents and fatty acid composition of 49 fish belonging to five Antarctic demersal families (Nototheniidae, Macrouridae, Channichtyidae, Bathydraconidae and Artedidraconidae)sampled at two stations at the Southern Ocean shelf and deep sea(600 and 215 0m)were analysed in order to identify th...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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ftawi:oai:epic.awi.de:30613 2023-05-15T13:46:52+02:00 Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses Würzberg, Laura Peters, Janna Flores, Hauke Brandt, Angelika 2011 https://epic.awi.de/id/eprint/30613/ https://doi.org/10.1016/j.dsr2.2011.05.012 https://hdl.handle.net/10013/epic.39725 unknown Würzberg, L. , Peters, J. , Flores, H. orcid:0000-0003-1617-5449 and Brandt, A. (2011) Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses , Deep Sea Research Part II: Topical Studies in Oceanography, 58 (19-20), pp. 2036-2042 . doi:10.1016/j.dsr2.2011.05.012 <https://doi.org/10.1016/j.dsr2.2011.05.012> , hdl:10013/epic.39725 EPIC3Deep Sea Research Part II: Topical Studies in Oceanography, 58(19-20), pp. 2036-2042, ISSN: 0967-0645 Article isiRev 2011 ftawi https://doi.org/10.1016/j.dsr2.2011.05.012 2021-12-24T15:37:46Z The gut contents and fatty acid composition of 49 fish belonging to five Antarctic demersal families (Nototheniidae, Macrouridae, Channichtyidae, Bathydraconidae and Artedidraconidae)sampled at two stations at the Southern Ocean shelf and deep sea(600 and 215 0m)were analysed in order to identify their main food resource by linking trophic biomarkers with the dietary items found in the fishguts. Main food items of most fish analysed were amphipod crustaceans(e.g.in 63% of Trematomus bernachii guts) and polychaetes(e.g.in 80% of Bathydraco sp.guts), but other food items including fish, other crustaceans and gastropods were also ingested.The most prominent fatty acids found were20:5(n-3),16:0, 22:6(n-3) and 18:1(n-9). The results of gut content and fatty acid analyses indicate that all fish except the Channichthyidae share similar food resources irrespective of their depth distribution,i.e.benthic amphipods and polychaetes.A difference of the dietary spectrum can be observed with ontogenetic phases rather than between species, as high values of typical calanoid copepod marker fatty acids as 22:1(n-11)indicate that younger(smaller)specimens include more zooplankton in their diet. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean The Antarctic Deep Sea Research Part II: Topical Studies in Oceanography 58 19-20 2036 2042 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The gut contents and fatty acid composition of 49 fish belonging to five Antarctic demersal families (Nototheniidae, Macrouridae, Channichtyidae, Bathydraconidae and Artedidraconidae)sampled at two stations at the Southern Ocean shelf and deep sea(600 and 215 0m)were analysed in order to identify their main food resource by linking trophic biomarkers with the dietary items found in the fishguts. Main food items of most fish analysed were amphipod crustaceans(e.g.in 63% of Trematomus bernachii guts) and polychaetes(e.g.in 80% of Bathydraco sp.guts), but other food items including fish, other crustaceans and gastropods were also ingested.The most prominent fatty acids found were20:5(n-3),16:0, 22:6(n-3) and 18:1(n-9). The results of gut content and fatty acid analyses indicate that all fish except the Channichthyidae share similar food resources irrespective of their depth distribution,i.e.benthic amphipods and polychaetes.A difference of the dietary spectrum can be observed with ontogenetic phases rather than between species, as high values of typical calanoid copepod marker fatty acids as 22:1(n-11)indicate that younger(smaller)specimens include more zooplankton in their diet. |
format |
Article in Journal/Newspaper |
author |
Würzberg, Laura Peters, Janna Flores, Hauke Brandt, Angelika |
spellingShingle |
Würzberg, Laura Peters, Janna Flores, Hauke Brandt, Angelika Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
author_facet |
Würzberg, Laura Peters, Janna Flores, Hauke Brandt, Angelika |
author_sort |
Würzberg, Laura |
title |
Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
title_short |
Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
title_full |
Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
title_fullStr |
Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
title_full_unstemmed |
Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
title_sort |
demersal fishes from the antarctic shelf and deep sea: a diet study based on fatty acid patterns and gut content analyses |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/30613/ https://doi.org/10.1016/j.dsr2.2011.05.012 https://hdl.handle.net/10013/epic.39725 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
EPIC3Deep Sea Research Part II: Topical Studies in Oceanography, 58(19-20), pp. 2036-2042, ISSN: 0967-0645 |
op_relation |
Würzberg, L. , Peters, J. , Flores, H. orcid:0000-0003-1617-5449 and Brandt, A. (2011) Demersal fishes from the Antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses , Deep Sea Research Part II: Topical Studies in Oceanography, 58 (19-20), pp. 2036-2042 . doi:10.1016/j.dsr2.2011.05.012 <https://doi.org/10.1016/j.dsr2.2011.05.012> , hdl:10013/epic.39725 |
op_doi |
https://doi.org/10.1016/j.dsr2.2011.05.012 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
58 |
container_issue |
19-20 |
container_start_page |
2036 |
op_container_end_page |
2042 |
_version_ |
1766245464993169408 |