Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign
The composition and distribution of squid and fish collected by Rectangular Midwater Trawls in the upper 200 m were investigated during the BROKE-West (Baseline Research on Oceanography, Krill and the Environment-West) survey (January-March 2006) in CCAMLR Subdivision 58.4.2 of the Southern Ocean. A...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2010
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Online Access: | https://hdl.handle.net/11370/f99b7dff-b758-47b3-936e-43be19ddff0b https://research.rug.nl/en/publications/f99b7dff-b758-47b3-936e-43be19ddff0b https://doi.org/10.1016/j.dsr2.2008.02.015 |
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ftunigroningenpu:oai:pure.rug.nl:publications/f99b7dff-b758-47b3-936e-43be19ddff0b 2024-09-09T19:02:10+00:00 Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign Van de Putte, Anton P. Jackson, George D. Pakhomov, Evgeny Flores, Hauke Volckaert, Filip A. M. 2010-05 https://hdl.handle.net/11370/f99b7dff-b758-47b3-936e-43be19ddff0b https://research.rug.nl/en/publications/f99b7dff-b758-47b3-936e-43be19ddff0b https://doi.org/10.1016/j.dsr2.2008.02.015 eng eng https://research.rug.nl/en/publications/f99b7dff-b758-47b3-936e-43be19ddff0b info:eu-repo/semantics/closedAccess Van de Putte , A P , Jackson , G D , Pakhomov , E , Flores , H & Volckaert , F A M 2010 , ' Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign ' , Deep-Sea research part ii-Topical studies in oceanography , vol. 57 , no. 9-10 , pp. 956-967 . https://doi.org/10.1016/j.dsr2.2008.02.015 ANTARCTIC MESOPELAGIC FISHES SILVERFISH PLEURAGRAMMA-ANTARCTICUM MIDWATER FOOD WEB SOUTHERN-OCEAN EAST ANTARCTICA WEDDELL SEA MACROZOOPLANKTON COMMUNITY GALITEUTHIS-GLACIALIS PENINSULA MYCTOPHIDAE article 2010 ftunigroningenpu https://doi.org/10.1016/j.dsr2.2008.02.015 2024-06-17T15:54:38Z The composition and distribution of squid and fish collected by Rectangular Midwater Trawls in the upper 200 m were investigated during the BROKE-West (Baseline Research on Oceanography, Krill and the Environment-West) survey (January-March 2006) in CCAMLR Subdivision 58.4.2 of the Southern Ocean. A total of 332 individuals were collected, with the most abundant fish species being Pleuragramma antarcticum (34%), Notolepis coatsi (27%) and Electrona antarctica (26%); and the most abundant squid being Galiteuthis glacialis (64%). Abundances of all species were among the lowest recorded using this type of gear. Cluster analysis revealed two distinct communities: a notothenioid-dominated coastal community and an oceanic community dominated by mesopelagic fish and squid. Environmental factors related to this segregation were explored using Redundancy Analysis (RDA). The notothenioid P. antarcticum was associated with shallow areas with high chlorophyll a concentrations. Larval stages of E. antarctica, N. coatsi and G. glacialis were found over deeper water and were positively correlated with higher temperatures and a deeper-reaching mixed layer. Postmetamorphic stages of E. antarctica were caught mostly after sunset and were negatively correlated with solar elevation. The observation of higher densities in the eastern part of the sampling area reflects a temporal rather than a geographical effect. Samples of the three most abundant fishes, E. antarctica, P. antarcticum and N. coatsi, were analysed for gut content. All species fed on a variety of mesozooplankton including copepods, amphipods and euphausiids, which is consistent with previous reports on similar life stages. Mean body energy density was highest for E. antarctica (27 kJ g(-1)), while it was similar for P. antarcticum and N. coatsi (22 kJ g(-1)). The high energy content emphasizing the importance as a food resource for top predators in the Southern Ocean. (C) 2009 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctica Cosmonaut sea E. Antarctica East Antarctica Prydz Bay Southern Ocean Weddell Sea Copepods University of Groningen research database Antarctic Southern Ocean Weddell Sea East Antarctica Prydz Bay Weddell Deep Sea Research Part II: Topical Studies in Oceanography 57 9-10 956 967 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
ANTARCTIC MESOPELAGIC FISHES SILVERFISH PLEURAGRAMMA-ANTARCTICUM MIDWATER FOOD WEB SOUTHERN-OCEAN EAST ANTARCTICA WEDDELL SEA MACROZOOPLANKTON COMMUNITY GALITEUTHIS-GLACIALIS PENINSULA MYCTOPHIDAE |
spellingShingle |
ANTARCTIC MESOPELAGIC FISHES SILVERFISH PLEURAGRAMMA-ANTARCTICUM MIDWATER FOOD WEB SOUTHERN-OCEAN EAST ANTARCTICA WEDDELL SEA MACROZOOPLANKTON COMMUNITY GALITEUTHIS-GLACIALIS PENINSULA MYCTOPHIDAE Van de Putte, Anton P. Jackson, George D. Pakhomov, Evgeny Flores, Hauke Volckaert, Filip A. M. Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
topic_facet |
ANTARCTIC MESOPELAGIC FISHES SILVERFISH PLEURAGRAMMA-ANTARCTICUM MIDWATER FOOD WEB SOUTHERN-OCEAN EAST ANTARCTICA WEDDELL SEA MACROZOOPLANKTON COMMUNITY GALITEUTHIS-GLACIALIS PENINSULA MYCTOPHIDAE |
description |
The composition and distribution of squid and fish collected by Rectangular Midwater Trawls in the upper 200 m were investigated during the BROKE-West (Baseline Research on Oceanography, Krill and the Environment-West) survey (January-March 2006) in CCAMLR Subdivision 58.4.2 of the Southern Ocean. A total of 332 individuals were collected, with the most abundant fish species being Pleuragramma antarcticum (34%), Notolepis coatsi (27%) and Electrona antarctica (26%); and the most abundant squid being Galiteuthis glacialis (64%). Abundances of all species were among the lowest recorded using this type of gear. Cluster analysis revealed two distinct communities: a notothenioid-dominated coastal community and an oceanic community dominated by mesopelagic fish and squid. Environmental factors related to this segregation were explored using Redundancy Analysis (RDA). The notothenioid P. antarcticum was associated with shallow areas with high chlorophyll a concentrations. Larval stages of E. antarctica, N. coatsi and G. glacialis were found over deeper water and were positively correlated with higher temperatures and a deeper-reaching mixed layer. Postmetamorphic stages of E. antarctica were caught mostly after sunset and were negatively correlated with solar elevation. The observation of higher densities in the eastern part of the sampling area reflects a temporal rather than a geographical effect. Samples of the three most abundant fishes, E. antarctica, P. antarcticum and N. coatsi, were analysed for gut content. All species fed on a variety of mesozooplankton including copepods, amphipods and euphausiids, which is consistent with previous reports on similar life stages. Mean body energy density was highest for E. antarctica (27 kJ g(-1)), while it was similar for P. antarcticum and N. coatsi (22 kJ g(-1)). The high energy content emphasizing the importance as a food resource for top predators in the Southern Ocean. (C) 2009 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Van de Putte, Anton P. Jackson, George D. Pakhomov, Evgeny Flores, Hauke Volckaert, Filip A. M. |
author_facet |
Van de Putte, Anton P. Jackson, George D. Pakhomov, Evgeny Flores, Hauke Volckaert, Filip A. M. |
author_sort |
Van de Putte, Anton P. |
title |
Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
title_short |
Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
title_full |
Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
title_fullStr |
Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
title_full_unstemmed |
Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign |
title_sort |
distribution of squid and fish in the pelagic zone of the cosmonaut sea and prydz bay region during the broke-west campaign |
publishDate |
2010 |
url |
https://hdl.handle.net/11370/f99b7dff-b758-47b3-936e-43be19ddff0b https://research.rug.nl/en/publications/f99b7dff-b758-47b3-936e-43be19ddff0b https://doi.org/10.1016/j.dsr2.2008.02.015 |
geographic |
Antarctic Southern Ocean Weddell Sea East Antarctica Prydz Bay Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea East Antarctica Prydz Bay Weddell |
genre |
Antarc* Antarctic Antarctica Cosmonaut sea E. Antarctica East Antarctica Prydz Bay Southern Ocean Weddell Sea Copepods |
genre_facet |
Antarc* Antarctic Antarctica Cosmonaut sea E. Antarctica East Antarctica Prydz Bay Southern Ocean Weddell Sea Copepods |
op_source |
Van de Putte , A P , Jackson , G D , Pakhomov , E , Flores , H & Volckaert , F A M 2010 , ' Distribution of squid and fish in the pelagic zone of the Cosmonaut Sea and Prydz Bay region during the BROKE-West campaign ' , Deep-Sea research part ii-Topical studies in oceanography , vol. 57 , no. 9-10 , pp. 956-967 . https://doi.org/10.1016/j.dsr2.2008.02.015 |
op_relation |
https://research.rug.nl/en/publications/f99b7dff-b758-47b3-936e-43be19ddff0b |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.dsr2.2008.02.015 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
57 |
container_issue |
9-10 |
container_start_page |
956 |
op_container_end_page |
967 |
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1809816383236603904 |