South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation

Autores
Vila, Alejandro R.; Campagna, Claudio; Iñiguez, Miguel; Falabella, Valeria
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
South American sea lions (Otaria flavescens) are predictably preyed on by killer whales (Orcinus orca) at their breeding colonies in Peninsula Valdés, Argentina. Captures occur in shallow waters along the coastline. Killer whales strand in the surf where sea lion pups practice their swimming skills. Being slow and apparently unaware of danger (nonvigilant), pups are the most vulnerable prey (87% of captures). Adult sea lions escaped most attacks by increasing their swimming speed, changing directions swiftly, grouping, and hauling out of the water. In our observations, predator avoidance behaviours were contextual and based on the presence of killer whales and the degree of risk in the areas used by sea lions during their movements between rookeries. Swimming speed increased in sites where the risk of predation was highest and when killer whales were present. Vigilance and escape manoeuvres were recorded at these dangerous sites, characterized by deeper water and a sloping beach, which allowed the killer whales to strand or approach the coast safely. Predictability of the killer whales in space and time facilitates the South American sea lions in developing a reliable antipredation behaviour. Killer whales become more proficient at being predators, and adult sea lions become better at avoiding being preyed upon as they accumulate experience. The inexperience of the sea lion pups is the currency that sustains the killer whale's high rate of take.
Fil: Vila, Alejandro R.. Wildlife Conservation Society; Argentina
Fil: Campagna, Claudio. Wildlife Conservation Society; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Iñiguez, Miguel. Fundación Cethus; Argentina
Fil: Falabella, Valeria. Wildlife Conservation Society; Argentina
Materia
ANTIPREDATION
ARGENTINA
FEEDING STRATEGIES
KILLER WHALE
ORCINUS ORCA ORCA
OTARIA FLAVESCENS FLAVESCENS
PATAGONIA
PREDATOR AVOIDANCE
SOUTH AMERICAN SEA LION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/100398
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/100398
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predationVila, Alejandro R.Campagna, ClaudioIñiguez, MiguelFalabella, ValeriaANTIPREDATIONARGENTINAFEEDING STRATEGIESKILLER WHALEORCINUS ORCA ORCAOTARIA FLAVESCENS FLAVESCENSPATAGONIAPREDATOR AVOIDANCESOUTH AMERICAN SEA LIONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1South American sea lions (Otaria flavescens) are predictably preyed on by killer whales (Orcinus orca) at their breeding colonies in Peninsula Valdés, Argentina. Captures occur in shallow waters along the coastline. Killer whales strand in the surf where sea lion pups practice their swimming skills. Being slow and apparently unaware of danger (nonvigilant), pups are the most vulnerable prey (87% of captures). Adult sea lions escaped most attacks by increasing their swimming speed, changing directions swiftly, grouping, and hauling out of the water. In our observations, predator avoidance behaviours were contextual and based on the presence of killer whales and the degree of risk in the areas used by sea lions during their movements between rookeries. Swimming speed increased in sites where the risk of predation was highest and when killer whales were present. Vigilance and escape manoeuvres were recorded at these dangerous sites, characterized by deeper water and a sloping beach, which allowed the killer whales to strand or approach the coast safely. Predictability of the killer whales in space and time facilitates the South American sea lions in developing a reliable antipredation behaviour. Killer whales become more proficient at being predators, and adult sea lions become better at avoiding being preyed upon as they accumulate experience. The inexperience of the sea lion pups is the currency that sustains the killer whale's high rate of take.Fil: Vila, Alejandro R.. Wildlife Conservation Society; ArgentinaFil: Campagna, Claudio. Wildlife Conservation Society; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Iñiguez, Miguel. Fundación Cethus; ArgentinaFil: Falabella, Valeria. Wildlife Conservation Society; ArgentinaEuropean Association for Aquatic Mammals2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100398Vila, Alejandro R.; Campagna, Claudio; Iñiguez, Miguel; Falabella, Valeria; South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation; European Association for Aquatic Mammals; Aquatic Mammals; 34; 3; 12-2008; 317-3300167-5427CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1578/AM.34.3.2008.317info:eu-repo/semantics/altIdentifier/url/https://www.aquaticmammalsjournal.org/index.php?option=com_content&view=article&id=369:south-american-sea-lions-otaria-flavescens-avoid-killer-whale-orcinus-orca-predation-&catid=30:volume-34-issue-3&Itemid=98info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:14Zoai:ri.conicet.gov.ar:11336/100398instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:48:14.883CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
title South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
spellingShingle South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
Vila, Alejandro R.
ANTIPREDATION
ARGENTINA
FEEDING STRATEGIES
KILLER WHALE
ORCINUS ORCA ORCA
OTARIA FLAVESCENS FLAVESCENS
PATAGONIA
PREDATOR AVOIDANCE
SOUTH AMERICAN SEA LION
title_short South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
title_full South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
title_fullStr South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
title_full_unstemmed South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
title_sort South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation
dc.creator.none.fl_str_mv Vila, Alejandro R.
Campagna, Claudio
Iñiguez, Miguel
Falabella, Valeria
author Vila, Alejandro R.
author_facet Vila, Alejandro R.
Campagna, Claudio
Iñiguez, Miguel
Falabella, Valeria
author_role author
author2 Campagna, Claudio
Iñiguez, Miguel
Falabella, Valeria
author2_role author
author
author
dc.subject.none.fl_str_mv ANTIPREDATION
ARGENTINA
FEEDING STRATEGIES
KILLER WHALE
ORCINUS ORCA ORCA
OTARIA FLAVESCENS FLAVESCENS
PATAGONIA
PREDATOR AVOIDANCE
SOUTH AMERICAN SEA LION
topic ANTIPREDATION
ARGENTINA
FEEDING STRATEGIES
KILLER WHALE
ORCINUS ORCA ORCA
OTARIA FLAVESCENS FLAVESCENS
PATAGONIA
PREDATOR AVOIDANCE
SOUTH AMERICAN SEA LION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv South American sea lions (Otaria flavescens) are predictably preyed on by killer whales (Orcinus orca) at their breeding colonies in Peninsula Valdés, Argentina. Captures occur in shallow waters along the coastline. Killer whales strand in the surf where sea lion pups practice their swimming skills. Being slow and apparently unaware of danger (nonvigilant), pups are the most vulnerable prey (87% of captures). Adult sea lions escaped most attacks by increasing their swimming speed, changing directions swiftly, grouping, and hauling out of the water. In our observations, predator avoidance behaviours were contextual and based on the presence of killer whales and the degree of risk in the areas used by sea lions during their movements between rookeries. Swimming speed increased in sites where the risk of predation was highest and when killer whales were present. Vigilance and escape manoeuvres were recorded at these dangerous sites, characterized by deeper water and a sloping beach, which allowed the killer whales to strand or approach the coast safely. Predictability of the killer whales in space and time facilitates the South American sea lions in developing a reliable antipredation behaviour. Killer whales become more proficient at being predators, and adult sea lions become better at avoiding being preyed upon as they accumulate experience. The inexperience of the sea lion pups is the currency that sustains the killer whale's high rate of take.
Fil: Vila, Alejandro R.. Wildlife Conservation Society; Argentina
Fil: Campagna, Claudio. Wildlife Conservation Society; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Iñiguez, Miguel. Fundación Cethus; Argentina
Fil: Falabella, Valeria. Wildlife Conservation Society; Argentina
description South American sea lions (Otaria flavescens) are predictably preyed on by killer whales (Orcinus orca) at their breeding colonies in Peninsula Valdés, Argentina. Captures occur in shallow waters along the coastline. Killer whales strand in the surf where sea lion pups practice their swimming skills. Being slow and apparently unaware of danger (nonvigilant), pups are the most vulnerable prey (87% of captures). Adult sea lions escaped most attacks by increasing their swimming speed, changing directions swiftly, grouping, and hauling out of the water. In our observations, predator avoidance behaviours were contextual and based on the presence of killer whales and the degree of risk in the areas used by sea lions during their movements between rookeries. Swimming speed increased in sites where the risk of predation was highest and when killer whales were present. Vigilance and escape manoeuvres were recorded at these dangerous sites, characterized by deeper water and a sloping beach, which allowed the killer whales to strand or approach the coast safely. Predictability of the killer whales in space and time facilitates the South American sea lions in developing a reliable antipredation behaviour. Killer whales become more proficient at being predators, and adult sea lions become better at avoiding being preyed upon as they accumulate experience. The inexperience of the sea lion pups is the currency that sustains the killer whale's high rate of take.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/100398
Vila, Alejandro R.; Campagna, Claudio; Iñiguez, Miguel; Falabella, Valeria; South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation; European Association for Aquatic Mammals; Aquatic Mammals; 34; 3; 12-2008; 317-330
0167-5427
CONICET Digital
CONICET
url http://hdl.handle.net/11336/100398
identifier_str_mv Vila, Alejandro R.; Campagna, Claudio; Iñiguez, Miguel; Falabella, Valeria; South American sea lions (Otaria flavescens) avoid killer whale (Orcinus orca) predation; European Association for Aquatic Mammals; Aquatic Mammals; 34; 3; 12-2008; 317-330
0167-5427
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1578/AM.34.3.2008.317
info:eu-repo/semantics/altIdentifier/url/https://www.aquaticmammalsjournal.org/index.php?option=com_content&view=article&id=369:south-american-sea-lions-otaria-flavescens-avoid-killer-whale-orcinus-orca-predation-&catid=30:volume-34-issue-3&Itemid=98
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv European Association for Aquatic Mammals
publisher.none.fl_str_mv European Association for Aquatic Mammals
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842268912266248192
score 13.13397

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