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 2150 m) were analysed in order to identify...
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ftunivwagenin:oai:library.wur.nl:wurpubs/412652 2024-01-14T10:00:46+01:00 Demersal fishes from the antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses Wuerzberg, L. Peters, J. Florentino De Souza Silva, A.P. Brandt, A. 2011 application/pdf https://research.wur.nl/en/publications/demersal-fishes-from-the-antarctic-shelf-and-deep-sea-a-diet-stud https://doi.org/10.1016/j.dsr2.2011.05.012 en eng https://edepot.wur.nl/185803 https://research.wur.nl/en/publications/demersal-fishes-from-the-antarctic-shelf-and-deep-sea-a-diet-stud doi:10.1016/j.dsr2.2011.05.012 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Deep-Sea Research. Part II, tropical studies in oceanography 58 (2011) 19-20 ISSN: 0967-0645 calanoides-acutus calanus-propinquus eastern north pacific feeding-habits lipid compositions notothenioid fishes ross sea south shetland islands terra-nova bay trematomus-bernacchii info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2011 ftunivwagenin https://doi.org/10.1016/j.dsr2.2011.05.012 2023-12-20T23:18:52Z 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 2150 m) were analysed in order to identify their main food resource by linking trophic biomarkers with the dietary items found in the fish guts. 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 were 20:5(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 Ross Sea South Shetland Islands Southern Ocean Wageningen UR (University & Research Centre): Digital Library Antarctic Pacific Ross Sea South Shetland Islands Southern Ocean Terra Nova Bay The Antarctic Deep Sea Research Part II: Topical Studies in Oceanography 58 19-20 2036 2042 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
calanoides-acutus calanus-propinquus eastern north pacific feeding-habits lipid compositions notothenioid fishes ross sea south shetland islands terra-nova bay trematomus-bernacchii |
spellingShingle |
calanoides-acutus calanus-propinquus eastern north pacific feeding-habits lipid compositions notothenioid fishes ross sea south shetland islands terra-nova bay trematomus-bernacchii Wuerzberg, L. Peters, J. Florentino De Souza Silva, A.P. Brandt, A. Demersal fishes from the antarctic shelf and deep sea: A diet study based on fatty acid patterns and gut content analyses |
topic_facet |
calanoides-acutus calanus-propinquus eastern north pacific feeding-habits lipid compositions notothenioid fishes ross sea south shetland islands terra-nova bay trematomus-bernacchii |
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 2150 m) were analysed in order to identify their main food resource by linking trophic biomarkers with the dietary items found in the fish guts. 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 were 20:5(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 |
Wuerzberg, L. Peters, J. Florentino De Souza Silva, A.P. Brandt, A. |
author_facet |
Wuerzberg, L. Peters, J. Florentino De Souza Silva, A.P. Brandt, A. |
author_sort |
Wuerzberg, L. |
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://research.wur.nl/en/publications/demersal-fishes-from-the-antarctic-shelf-and-deep-sea-a-diet-stud https://doi.org/10.1016/j.dsr2.2011.05.012 |
geographic |
Antarctic Pacific Ross Sea South Shetland Islands Southern Ocean Terra Nova Bay The Antarctic |
geographic_facet |
Antarctic Pacific Ross Sea South Shetland Islands Southern Ocean Terra Nova Bay The Antarctic |
genre |
Antarc* Antarctic Ross Sea South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Ross Sea South Shetland Islands Southern Ocean |
op_source |
Deep-Sea Research. Part II, tropical studies in oceanography 58 (2011) 19-20 ISSN: 0967-0645 |
op_relation |
https://edepot.wur.nl/185803 https://research.wur.nl/en/publications/demersal-fishes-from-the-antarctic-shelf-and-deep-sea-a-diet-stud doi:10.1016/j.dsr2.2011.05.012 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
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 |
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1788066660291182592 |