Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer
The study of the feeding habits of Weddell seals, Leptonychotes weddellii, in the area of west Antarctic Peninsula is essential to understand the role they play in the marine food webs, especially considering that this is one of the regions most affected by climate change. With the aim of detecting...
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ftconicet:oai:ri.conicet.gov.ar:11336/93207 2023-10-09T21:44:58+02:00 Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer Daneri, Gustavo Adolfo Negri, Agustina Coria, Néstor Rubén Negrete, Javier Libertelli, Marcela Mónica Corbalán, A. application/pdf http://hdl.handle.net/11336/93207 eng eng Springer info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00300-018-2255-z info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2255-z http://hdl.handle.net/11336/93207 Daneri, Gustavo Adolfo; Negri, Agustina; Coria, Néstor Rubén; Negrete, Javier; Libertelli, Marcela Mónica; et al.; Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer; Springer; Polar Biology; 41; 5; 5-2018; 1027-1031 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTIC PENINSULA DIET ENSO FISH LEPTONYCHOTES PLEURAGRAMMA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-018-2255-z 2023-09-24T18:58:41Z The study of the feeding habits of Weddell seals, Leptonychotes weddellii, in the area of west Antarctic Peninsula is essential to understand the role they play in the marine food webs, especially considering that this is one of the regions most affected by climate change. With the aim of detecting temporal changes in the fish predation pattern of seals, a total of 217 scats were collected at Hope Bay, during three consecutive summers (2003, 2004 and 2005). The family Nototheniidae comprised over 80% in numbers of fish preyed by seals. The Antarctic silverfish, Pleuragramma antarctica, was, by far, the most frequent and abundant prey species with a mean percentage frequency of occurrence of 48.7% and representing in average 52.1% in numbers of the fish consumed by seals. Other fish species of lesser importance were the nototheniids Trematomus newnesi, Lepidonotothen larseni, Gobionotothen gibberifrons and the channichthyid Chionodraco rastrospinosus. Temporal variation was observed not only in the relative proportions of the different fish prey taxa but also in the sizes of the dominant prey, P. antarctica. Given the high trophic vulnerability of this species to changes in abiotic factors and food web structure and dynamics, a possible influence of El Niño Southern Oscillation events of 2002–2003 and 2004–2005 should not be discarded. Moreover, special attention should be addressed to its population status, distribution and spatial/temporal availability as prey resource of upper trophic level consumers such as L. weddellii which largely depend on P. antarctica. Fil: Daneri, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Negri, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Ministerio de ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic silverfish Antarctica Polar Biology Weddell Seals CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Gustavo ENVELOPE(-62.917,-62.917,-64.833,-64.833) Hope Bay ENVELOPE(-57.038,-57.038,-63.403,-63.403) Polar Biology 41 5 1027 1031 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTIC PENINSULA DIET ENSO FISH LEPTONYCHOTES PLEURAGRAMMA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTIC PENINSULA DIET ENSO FISH LEPTONYCHOTES PLEURAGRAMMA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Daneri, Gustavo Adolfo Negri, Agustina Coria, Néstor Rubén Negrete, Javier Libertelli, Marcela Mónica Corbalán, A. Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
topic_facet |
ANTARCTIC PENINSULA DIET ENSO FISH LEPTONYCHOTES PLEURAGRAMMA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
The study of the feeding habits of Weddell seals, Leptonychotes weddellii, in the area of west Antarctic Peninsula is essential to understand the role they play in the marine food webs, especially considering that this is one of the regions most affected by climate change. With the aim of detecting temporal changes in the fish predation pattern of seals, a total of 217 scats were collected at Hope Bay, during three consecutive summers (2003, 2004 and 2005). The family Nototheniidae comprised over 80% in numbers of fish preyed by seals. The Antarctic silverfish, Pleuragramma antarctica, was, by far, the most frequent and abundant prey species with a mean percentage frequency of occurrence of 48.7% and representing in average 52.1% in numbers of the fish consumed by seals. Other fish species of lesser importance were the nototheniids Trematomus newnesi, Lepidonotothen larseni, Gobionotothen gibberifrons and the channichthyid Chionodraco rastrospinosus. Temporal variation was observed not only in the relative proportions of the different fish prey taxa but also in the sizes of the dominant prey, P. antarctica. Given the high trophic vulnerability of this species to changes in abiotic factors and food web structure and dynamics, a possible influence of El Niño Southern Oscillation events of 2002–2003 and 2004–2005 should not be discarded. Moreover, special attention should be addressed to its population status, distribution and spatial/temporal availability as prey resource of upper trophic level consumers such as L. weddellii which largely depend on P. antarctica. Fil: Daneri, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina Fil: Negri, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; Argentina. Ministerio de ... |
format |
Article in Journal/Newspaper |
author |
Daneri, Gustavo Adolfo Negri, Agustina Coria, Néstor Rubén Negrete, Javier Libertelli, Marcela Mónica Corbalán, A. |
author_facet |
Daneri, Gustavo Adolfo Negri, Agustina Coria, Néstor Rubén Negrete, Javier Libertelli, Marcela Mónica Corbalán, A. |
author_sort |
Daneri, Gustavo Adolfo |
title |
Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
title_short |
Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
title_full |
Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
title_fullStr |
Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
title_full_unstemmed |
Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer |
title_sort |
fish prey of weddell seals, leptonychotes weddellii, at hope bay, antarctic peninsula, during the late summer |
publisher |
Springer |
url |
http://hdl.handle.net/11336/93207 |
long_lat |
ENVELOPE(-62.917,-62.917,-64.833,-64.833) ENVELOPE(-57.038,-57.038,-63.403,-63.403) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Gustavo Hope Bay |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Argentino Weddell Argentina Gustavo Hope Bay |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic silverfish Antarctica Polar Biology Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic silverfish Antarctica Polar Biology Weddell Seals |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s00300-018-2255-z info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2255-z http://hdl.handle.net/11336/93207 Daneri, Gustavo Adolfo; Negri, Agustina; Coria, Néstor Rubén; Negrete, Javier; Libertelli, Marcela Mónica; et al.; Fish prey of Weddell seals, Leptonychotes weddellii, at Hope Bay, Antarctic Peninsula, during the late summer; Springer; Polar Biology; 41; 5; 5-2018; 1027-1031 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-018-2255-z |
container_title |
Polar Biology |
container_volume |
41 |
container_issue |
5 |
container_start_page |
1027 |
op_container_end_page |
1031 |
_version_ |
1779315026561073152 |