Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia
Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where c...
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Online Access: | http://hdl.handle.net/11336/123402 |
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ftconicet:oai:ri.conicet.gov.ar:11336/123402 2023-10-09T21:45:45+02:00 Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia Campagna, Julieta Lewis, Mirtha Noemi González Carman, Victoria Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodríguez, Diego Hernán Hindell, Mark A. application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document http://hdl.handle.net/11336/123402 eng eng Wiley Blackwell Publishing, Inc info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/mms.12770 info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12770 http://hdl.handle.net/11336/123402 Campagna, Julieta; Lewis, Mirtha Noemi; González Carman, Victoria; Campagna, Claudio; Guinet, Christophe; et al.; Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia; Wiley Blackwell Publishing, Inc; Marine Mammal Science; 36; 12-12-2020; 1-39 0824-0469 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ELEPHANT SEALS MIROUNGA LEONINA NICHE PARTITIONING ONTOGENY PENÍNSULA VALDÉS SOUTH ATLANTIC OCEAN 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/10.1111/mms.12770 2023-09-24T18:54:50Z Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where colonies are surrounded by narrow shelves that deepen abruptly. In contrast, seals from Península Valdés (Argentina), in the northernmost extent of the breeding range, face an extended, shallow, temperate, and productive continental shelf. We integrated tracking data from 98 animals (juveniles and adults, males and females) gathered over more than two decades, and found that although all available habitats were used, individuals segregated by age and sex. Juvenile males favored shelf habitats, whereas subadult and adult males also used the shelf break. Juvenile females preferred the shelf and the more distant Argentine Basin used by postbreeding and postmolt adult females. Males showed the highest proportion of area-restricted search locations, suggesting more spatially concentrated feeding activity, and likely reflecting a preference for foraging habitat and prey. Our results are consistent with those from other populations, implying that elephant seals show remarkable similarities in habitat use by age and sex classes, despite broad differences in the offshore habitats between sub-Antarctic and temperate ecosystems. Fil: Campagna, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: González Carman, Victoria. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico ... Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Patagonia Argentina Argentine Julieta ENVELOPE(-61.358,-61.358,-64.397,-64.397) Marine Mammal Science 37 2 631 651 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ELEPHANT SEALS MIROUNGA LEONINA NICHE PARTITIONING ONTOGENY PENÍNSULA VALDÉS SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ELEPHANT SEALS MIROUNGA LEONINA NICHE PARTITIONING ONTOGENY PENÍNSULA VALDÉS SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Campagna, Julieta Lewis, Mirtha Noemi González Carman, Victoria Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodríguez, Diego Hernán Hindell, Mark A. Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
topic_facet |
ELEPHANT SEALS MIROUNGA LEONINA NICHE PARTITIONING ONTOGENY PENÍNSULA VALDÉS SOUTH ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where colonies are surrounded by narrow shelves that deepen abruptly. In contrast, seals from Península Valdés (Argentina), in the northernmost extent of the breeding range, face an extended, shallow, temperate, and productive continental shelf. We integrated tracking data from 98 animals (juveniles and adults, males and females) gathered over more than two decades, and found that although all available habitats were used, individuals segregated by age and sex. Juvenile males favored shelf habitats, whereas subadult and adult males also used the shelf break. Juvenile females preferred the shelf and the more distant Argentine Basin used by postbreeding and postmolt adult females. Males showed the highest proportion of area-restricted search locations, suggesting more spatially concentrated feeding activity, and likely reflecting a preference for foraging habitat and prey. Our results are consistent with those from other populations, implying that elephant seals show remarkable similarities in habitat use by age and sex classes, despite broad differences in the offshore habitats between sub-Antarctic and temperate ecosystems. Fil: Campagna, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Centro para el Estudio de Sistemas Marinos; Argentina Fil: González Carman, Victoria. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico ... |
format |
Article in Journal/Newspaper |
author |
Campagna, Julieta Lewis, Mirtha Noemi González Carman, Victoria Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodríguez, Diego Hernán Hindell, Mark A. |
author_facet |
Campagna, Julieta Lewis, Mirtha Noemi González Carman, Victoria Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodríguez, Diego Hernán Hindell, Mark A. |
author_sort |
Campagna, Julieta |
title |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_short |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_full |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_fullStr |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_full_unstemmed |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_sort |
ontogenetic niche partitioning in southern elephant seals from argentine patagonia |
publisher |
Wiley Blackwell Publishing, Inc |
url |
http://hdl.handle.net/11336/123402 |
long_lat |
ENVELOPE(-61.358,-61.358,-64.397,-64.397) |
geographic |
Antarctic Patagonia Argentina Argentine Julieta |
geographic_facet |
Antarctic Patagonia Argentina Argentine Julieta |
genre |
Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/mms.12770 info:eu-repo/semantics/altIdentifier/doi/10.1111/mms.12770 http://hdl.handle.net/11336/123402 Campagna, Julieta; Lewis, Mirtha Noemi; González Carman, Victoria; Campagna, Claudio; Guinet, Christophe; et al.; Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia; Wiley Blackwell Publishing, Inc; Marine Mammal Science; 36; 12-12-2020; 1-39 0824-0469 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/10.1111/mms.12770 |
container_title |
Marine Mammal Science |
container_volume |
37 |
container_issue |
2 |
container_start_page |
631 |
op_container_end_page |
651 |
_version_ |
1779321406343872512 |