Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter
Results of analyses of stomach and intestinal contents from hooded (Cystophora cristata) and harp (Phoca groenlandica) seals captured in the pack ice belt of the Greenland Sea in summer (July-August) in 2000 and winter (February-March) in 2001 revealed that the diet of both species were comprised of...
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Norwegian Polar Institute
2004
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Online Access: | https://polarresearch.net/index.php/polar/article/view/2071 https://doi.org/10.3402/polar.v23i1.6264 |
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ftjpolarres:oai:journals.openacademia.net:article/2071 2024-09-09T19:34:23+00:00 Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter Haug, Tore Nilssen, Kjell T. Lindblom, Lotta 2004-06-01 application/pdf https://polarresearch.net/index.php/polar/article/view/2071 https://doi.org/10.3402/polar.v23i1.6264 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/2071/5322 https://polarresearch.net/index.php/polar/article/view/2071 doi:10.3402/polar.v23i1.6264 Polar Research; Vol. 23 No. 1 (2004); 35-42 1751-8369 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2004 ftjpolarres https://doi.org/10.3402/polar.v23i1.6264 2024-06-28T03:10:15Z Results of analyses of stomach and intestinal contents from hooded (Cystophora cristata) and harp (Phoca groenlandica) seals captured in the pack ice belt of the Greenland Sea in summer (July-August) in 2000 and winter (February-March) in 2001 revealed that the diet of both species were comprised of relatively few prey taxa. Pelagic amphipods of the genus Parathemisto, the squid Gonatus fabricii, polar cod (Boreogadus saida) and capelin (Mallotus villosus) constituted 63-99% of the observed diet biomass in both seal species, irrespective of sampling period, but their relative contribution to the diet varied both with species and sampling period/area. For hooded seals, G. fabricii and capelin were the dominant food items in winter 2001, but the summer 2000 diet comprised a mixture of this squid and polar cod. Parathemisto was most important for the harp seals during summer 2000; in winter 2001 the contribution from krill and capelin were comparable to that of Parathemisto. Multivariate analyses revealed differences in the intestinal contents of hooded and harp seals in areas where the two species’ occurrence spatially overlapped. Different foraging depths of the two species may have contributed to the observed differences in diets. Article in Journal/Newspaper Boreogadus saida Cystophora cristata Greenland Greenland Sea Phoca groenlandica polar cod Polar Research Polar Research Greenland Polar Research 23 1 35 42 |
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Open Polar |
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Polar Research |
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ftjpolarres |
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English |
description |
Results of analyses of stomach and intestinal contents from hooded (Cystophora cristata) and harp (Phoca groenlandica) seals captured in the pack ice belt of the Greenland Sea in summer (July-August) in 2000 and winter (February-March) in 2001 revealed that the diet of both species were comprised of relatively few prey taxa. Pelagic amphipods of the genus Parathemisto, the squid Gonatus fabricii, polar cod (Boreogadus saida) and capelin (Mallotus villosus) constituted 63-99% of the observed diet biomass in both seal species, irrespective of sampling period, but their relative contribution to the diet varied both with species and sampling period/area. For hooded seals, G. fabricii and capelin were the dominant food items in winter 2001, but the summer 2000 diet comprised a mixture of this squid and polar cod. Parathemisto was most important for the harp seals during summer 2000; in winter 2001 the contribution from krill and capelin were comparable to that of Parathemisto. Multivariate analyses revealed differences in the intestinal contents of hooded and harp seals in areas where the two species’ occurrence spatially overlapped. Different foraging depths of the two species may have contributed to the observed differences in diets. |
format |
Article in Journal/Newspaper |
author |
Haug, Tore Nilssen, Kjell T. Lindblom, Lotta |
spellingShingle |
Haug, Tore Nilssen, Kjell T. Lindblom, Lotta Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
author_facet |
Haug, Tore Nilssen, Kjell T. Lindblom, Lotta |
author_sort |
Haug, Tore |
title |
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
title_short |
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
title_full |
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
title_fullStr |
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
title_full_unstemmed |
Feeding habits of harp and hooded seals in drift ice waters along the east coast of Greenland in summer and winter |
title_sort |
feeding habits of harp and hooded seals in drift ice waters along the east coast of greenland in summer and winter |
publisher |
Norwegian Polar Institute |
publishDate |
2004 |
url |
https://polarresearch.net/index.php/polar/article/view/2071 https://doi.org/10.3402/polar.v23i1.6264 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Boreogadus saida Cystophora cristata Greenland Greenland Sea Phoca groenlandica polar cod Polar Research |
genre_facet |
Boreogadus saida Cystophora cristata Greenland Greenland Sea Phoca groenlandica polar cod Polar Research |
op_source |
Polar Research; Vol. 23 No. 1 (2004); 35-42 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/2071/5322 https://polarresearch.net/index.php/polar/article/view/2071 doi:10.3402/polar.v23i1.6264 |
op_doi |
https://doi.org/10.3402/polar.v23i1.6264 |
container_title |
Polar Research |
container_volume |
23 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
42 |
_version_ |
1809903890320064512 |