Adult Antarctic krill feeding at abyssal depths
Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within the Southern Ocean [1], and a key species in the Antarctic food web [2]. The Discovery Investigations in the early 20(th) century, coupled with subsequent work with both nets and echosounders, indicated that the bul...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/11423/ |
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ftnerc:oai:nora.nerc.ac.uk:11423 2023-05-15T13:45:10+02:00 Adult Antarctic krill feeding at abyssal depths Clarke, Andrew Tyler, Paul A. 2008 http://nora.nerc.ac.uk/id/eprint/11423/ unknown Cell Press Clarke, Andrew orcid:0000-0002-7582-3074 Tyler, Paul A. 2008 Adult Antarctic krill feeding at abyssal depths. Current Biology, 18 (4). 282-285. https://doi.org/10.1016/j.cub.2008.01.059 <https://doi.org/10.1016/j.cub.2008.01.059> Marine Sciences Zoology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.1016/j.cub.2008.01.059 2023-02-04T19:27:21Z Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within the Southern Ocean [1], and a key species in the Antarctic food web [2]. The Discovery Investigations in the early 20(th) century, coupled with subsequent work with both nets and echosounders, indicated that the bulk of the population of postlarval krill is typically confined to the top 150 m of the water column [1, 3, 4]. Here, we report for the first time the existence of significant numbers of Antarctic krill feeding actively at abyssal depths in the Southern Ocean. Biological observations from the deep-water remotely operated vehicle Isis in the austral summer of 2006/07 have revealed the presence of adult krill (Euphausia superba Dana), including gravid females, at unprecedented depths in Marguerite Bay, western Antarctic Peninsula. Adult krill were found close to the seabed at all depths but were absent from fjords close inshore. At all locations where krill were detected they were seen to be actively feeding, and at many locations there were exuviae (cast molts). These observations revise significantly our understanding of the depth distribution and ecology of Antarctic krill, a central organism in the Southern Ocean ecosystem. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Austral Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Southern Ocean The Antarctic Current Biology 18 4 282 285 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Marine Sciences Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Zoology Ecology and Environment Clarke, Andrew Tyler, Paul A. Adult Antarctic krill feeding at abyssal depths |
topic_facet |
Marine Sciences Zoology Ecology and Environment |
description |
Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within the Southern Ocean [1], and a key species in the Antarctic food web [2]. The Discovery Investigations in the early 20(th) century, coupled with subsequent work with both nets and echosounders, indicated that the bulk of the population of postlarval krill is typically confined to the top 150 m of the water column [1, 3, 4]. Here, we report for the first time the existence of significant numbers of Antarctic krill feeding actively at abyssal depths in the Southern Ocean. Biological observations from the deep-water remotely operated vehicle Isis in the austral summer of 2006/07 have revealed the presence of adult krill (Euphausia superba Dana), including gravid females, at unprecedented depths in Marguerite Bay, western Antarctic Peninsula. Adult krill were found close to the seabed at all depths but were absent from fjords close inshore. At all locations where krill were detected they were seen to be actively feeding, and at many locations there were exuviae (cast molts). These observations revise significantly our understanding of the depth distribution and ecology of Antarctic krill, a central organism in the Southern Ocean ecosystem. |
format |
Article in Journal/Newspaper |
author |
Clarke, Andrew Tyler, Paul A. |
author_facet |
Clarke, Andrew Tyler, Paul A. |
author_sort |
Clarke, Andrew |
title |
Adult Antarctic krill feeding at abyssal depths |
title_short |
Adult Antarctic krill feeding at abyssal depths |
title_full |
Adult Antarctic krill feeding at abyssal depths |
title_fullStr |
Adult Antarctic krill feeding at abyssal depths |
title_full_unstemmed |
Adult Antarctic krill feeding at abyssal depths |
title_sort |
adult antarctic krill feeding at abyssal depths |
publisher |
Cell Press |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11423/ |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Austral Marguerite Marguerite Bay Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Southern Ocean |
op_relation |
Clarke, Andrew orcid:0000-0002-7582-3074 Tyler, Paul A. 2008 Adult Antarctic krill feeding at abyssal depths. Current Biology, 18 (4). 282-285. https://doi.org/10.1016/j.cub.2008.01.059 <https://doi.org/10.1016/j.cub.2008.01.059> |
op_doi |
https://doi.org/10.1016/j.cub.2008.01.059 |
container_title |
Current Biology |
container_volume |
18 |
container_issue |
4 |
container_start_page |
282 |
op_container_end_page |
285 |
_version_ |
1766214552959057920 |