Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events
Possible effects of ‘El Niño’ Southern Oscillation (ENSO) components ‘El Niño’ and ‘La Niña’ on populations of southern elephant seals, Mirounga leonina , were analysed. Changes in the cephalopod diet composition of moulting females at King George Island, Antarctic Peninsula were considered. The die...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Cambridge University Press (CUP)
2002
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Online Access: | http://dx.doi.org/10.1017/s0025315402006343 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315402006343 |
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crcambridgeupr:10.1017/s0025315402006343 2024-03-03T08:38:12+00:00 Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events Piatkowski, Uwe Vergani, Daniel F. Stanganelli, Zulma B. 2002 http://dx.doi.org/10.1017/s0025315402006343 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315402006343 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 82, issue 5, page 913-916 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2002 crcambridgeupr https://doi.org/10.1017/s0025315402006343 2024-02-08T08:43:27Z Possible effects of ‘El Niño’ Southern Oscillation (ENSO) components ‘El Niño’ and ‘La Niña’ on populations of southern elephant seals, Mirounga leonina , were analysed. Changes in the cephalopod diet composition of moulting females at King George Island, Antarctic Peninsula were considered. The diet of female elephant seals sampled in 1991–1992 and 1992–1993 (El Niño years) were compared with those taken in 1995–1996 (La Niña year) at the same site and employing the same methodology. The squid Psychroteuthis glacialis constituted the main cephalopod prey of the seals. A reduction in the ‘Index of Biomass Ingested’ by female elephant seals (IBIF) of this prey species was observed in ‘El Niño’ years (1992, 1993) compared with the ‘La Niña’ year (1996). This reduction in biomass applied to all squid species in the seals' prey with the exception of Galiteuthis glacialis , which occurred in low numbers, but was more abundant during El Niño years than in the La Niña year. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals King George Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals Cambridge University Press Antarctic Antarctic Peninsula King George Island Journal of the Marine Biological Association of the United Kingdom 82 5 913 916 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Piatkowski, Uwe Vergani, Daniel F. Stanganelli, Zulma B. Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
topic_facet |
Aquatic Science |
description |
Possible effects of ‘El Niño’ Southern Oscillation (ENSO) components ‘El Niño’ and ‘La Niña’ on populations of southern elephant seals, Mirounga leonina , were analysed. Changes in the cephalopod diet composition of moulting females at King George Island, Antarctic Peninsula were considered. The diet of female elephant seals sampled in 1991–1992 and 1992–1993 (El Niño years) were compared with those taken in 1995–1996 (La Niña year) at the same site and employing the same methodology. The squid Psychroteuthis glacialis constituted the main cephalopod prey of the seals. A reduction in the ‘Index of Biomass Ingested’ by female elephant seals (IBIF) of this prey species was observed in ‘El Niño’ years (1992, 1993) compared with the ‘La Niña’ year (1996). This reduction in biomass applied to all squid species in the seals' prey with the exception of Galiteuthis glacialis , which occurred in low numbers, but was more abundant during El Niño years than in the La Niña year. |
format |
Article in Journal/Newspaper |
author |
Piatkowski, Uwe Vergani, Daniel F. Stanganelli, Zulma B. |
author_facet |
Piatkowski, Uwe Vergani, Daniel F. Stanganelli, Zulma B. |
author_sort |
Piatkowski, Uwe |
title |
Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
title_short |
Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
title_full |
Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
title_fullStr |
Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
title_full_unstemmed |
Changes in the cephalopod diet of southern elephant seal females at King George Island, during El Niño-La Niña events |
title_sort |
changes in the cephalopod diet of southern elephant seal females at king george island, during el niño-la niña events |
publisher |
Cambridge University Press (CUP) |
publishDate |
2002 |
url |
http://dx.doi.org/10.1017/s0025315402006343 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315402006343 |
geographic |
Antarctic Antarctic Peninsula King George Island |
geographic_facet |
Antarctic Antarctic Peninsula King George Island |
genre |
Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals King George Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals King George Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 82, issue 5, page 913-916 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315402006343 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
82 |
container_issue |
5 |
container_start_page |
913 |
op_container_end_page |
916 |
_version_ |
1792505564804153344 |