Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding
- Autores
- Raya Rey, Andrea Nélida; Pütz, Klemens; Scioscia, Gabriela; Lthi, Benno; Schiavini, Adrian Carlos Miguel
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Understanding the foraging behaviour of seabirds and its plasticity is vital to establish their role in marine food webs and their use as indicators of change in the availability of prey. The foraging behaviour of penguins is known to differ with locality, sex, stage of breeding and between years. We studied the diving behaviour of breeding Magellanic Penguins (Spheniscus magellanicus), using time-depth recorders, during incubation and brooding in the 200304 and 200405 breeding seasons at Isla Martillo, Tierra del Fuego, Argentina. Foraging trips during the incubation period were longer than those during the brooding period for both sexes in both years of the study. Sex-related differences in foraging behaviour were observed during the incubation stage. During the incubation stage females performed longer foraging trips than males, foraging effort was lower, and did not dive as deep as males in both years. Foraging success was lower for females than males during incubation only in 2003. Our results suggest that sexual differences, expressed as differences in the foraging parameters of males and females, only develop when Fuegian Sprat (Sprattus fuegensis), the main prey in this locality, is not abundant close to the colony. Females may be extending the volume of water they can exploit by extending the duration of trips (horizontal distance), whereas males do so by diving deeper (vertical distance). Our results show the fundamental differences in foraging strategies between the sexes in Magellanic Penguin are a consequence of environmental conditions not morphological differences between sexes.
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Pütz, Klemens. Antarctic Research Trust; Alemania
Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Lthi, Benno. Antarctic Research Trust; Alemania
Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina - Materia
-
BEAGLE CHANNEL
DIVING BEHAVIOUR
FORAGING ECOLOGY
FORAGING STRATEGIES
SEABIRDS
SEXUAL DIMORPHISM
TIERRA DEL FUEGO - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/94845
Ver los metadatos del registro completo
id |
CONICETDig_68dc6702a18c6b3fd90391a2f4671d62 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/94845 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breedingRaya Rey, Andrea NélidaPütz, KlemensScioscia, GabrielaLthi, BennoSchiavini, Adrian Carlos MiguelBEAGLE CHANNELDIVING BEHAVIOURFORAGING ECOLOGYFORAGING STRATEGIESSEABIRDSSEXUAL DIMORPHISMTIERRA DEL FUEGOhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Understanding the foraging behaviour of seabirds and its plasticity is vital to establish their role in marine food webs and their use as indicators of change in the availability of prey. The foraging behaviour of penguins is known to differ with locality, sex, stage of breeding and between years. We studied the diving behaviour of breeding Magellanic Penguins (Spheniscus magellanicus), using time-depth recorders, during incubation and brooding in the 200304 and 200405 breeding seasons at Isla Martillo, Tierra del Fuego, Argentina. Foraging trips during the incubation period were longer than those during the brooding period for both sexes in both years of the study. Sex-related differences in foraging behaviour were observed during the incubation stage. During the incubation stage females performed longer foraging trips than males, foraging effort was lower, and did not dive as deep as males in both years. Foraging success was lower for females than males during incubation only in 2003. Our results suggest that sexual differences, expressed as differences in the foraging parameters of males and females, only develop when Fuegian Sprat (Sprattus fuegensis), the main prey in this locality, is not abundant close to the colony. Females may be extending the volume of water they can exploit by extending the duration of trips (horizontal distance), whereas males do so by diving deeper (vertical distance). Our results show the fundamental differences in foraging strategies between the sexes in Magellanic Penguin are a consequence of environmental conditions not morphological differences between sexes.Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Pütz, Klemens. Antarctic Research Trust; AlemaniaFil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Lthi, Benno. Antarctic Research Trust; AlemaniaFil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaCsiro Publishing2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/94845Raya Rey, Andrea Nélida; Pütz, Klemens; Scioscia, Gabriela; Lthi, Benno; Schiavini, Adrian Carlos Miguel; Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding; Csiro Publishing; Emu; 112; 2; 5-2012; 90-960158-4197CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1071/MU11065info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU11065info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:01:02Zoai:ri.conicet.gov.ar:11336/94845instacron: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 10:01:02.307CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
title |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
spellingShingle |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding Raya Rey, Andrea Nélida BEAGLE CHANNEL DIVING BEHAVIOUR FORAGING ECOLOGY FORAGING STRATEGIES SEABIRDS SEXUAL DIMORPHISM TIERRA DEL FUEGO |
title_short |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
title_full |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
title_fullStr |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
title_full_unstemmed |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
title_sort |
Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding |
dc.creator.none.fl_str_mv |
Raya Rey, Andrea Nélida Pütz, Klemens Scioscia, Gabriela Lthi, Benno Schiavini, Adrian Carlos Miguel |
author |
Raya Rey, Andrea Nélida |
author_facet |
Raya Rey, Andrea Nélida Pütz, Klemens Scioscia, Gabriela Lthi, Benno Schiavini, Adrian Carlos Miguel |
author_role |
author |
author2 |
Pütz, Klemens Scioscia, Gabriela Lthi, Benno Schiavini, Adrian Carlos Miguel |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
BEAGLE CHANNEL DIVING BEHAVIOUR FORAGING ECOLOGY FORAGING STRATEGIES SEABIRDS SEXUAL DIMORPHISM TIERRA DEL FUEGO |
topic |
BEAGLE CHANNEL DIVING BEHAVIOUR FORAGING ECOLOGY FORAGING STRATEGIES SEABIRDS SEXUAL DIMORPHISM TIERRA DEL FUEGO |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Understanding the foraging behaviour of seabirds and its plasticity is vital to establish their role in marine food webs and their use as indicators of change in the availability of prey. The foraging behaviour of penguins is known to differ with locality, sex, stage of breeding and between years. We studied the diving behaviour of breeding Magellanic Penguins (Spheniscus magellanicus), using time-depth recorders, during incubation and brooding in the 200304 and 200405 breeding seasons at Isla Martillo, Tierra del Fuego, Argentina. Foraging trips during the incubation period were longer than those during the brooding period for both sexes in both years of the study. Sex-related differences in foraging behaviour were observed during the incubation stage. During the incubation stage females performed longer foraging trips than males, foraging effort was lower, and did not dive as deep as males in both years. Foraging success was lower for females than males during incubation only in 2003. Our results suggest that sexual differences, expressed as differences in the foraging parameters of males and females, only develop when Fuegian Sprat (Sprattus fuegensis), the main prey in this locality, is not abundant close to the colony. Females may be extending the volume of water they can exploit by extending the duration of trips (horizontal distance), whereas males do so by diving deeper (vertical distance). Our results show the fundamental differences in foraging strategies between the sexes in Magellanic Penguin are a consequence of environmental conditions not morphological differences between sexes. Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Pütz, Klemens. Antarctic Research Trust; Alemania Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Lthi, Benno. Antarctic Research Trust; Alemania Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina |
description |
Understanding the foraging behaviour of seabirds and its plasticity is vital to establish their role in marine food webs and their use as indicators of change in the availability of prey. The foraging behaviour of penguins is known to differ with locality, sex, stage of breeding and between years. We studied the diving behaviour of breeding Magellanic Penguins (Spheniscus magellanicus), using time-depth recorders, during incubation and brooding in the 200304 and 200405 breeding seasons at Isla Martillo, Tierra del Fuego, Argentina. Foraging trips during the incubation period were longer than those during the brooding period for both sexes in both years of the study. Sex-related differences in foraging behaviour were observed during the incubation stage. During the incubation stage females performed longer foraging trips than males, foraging effort was lower, and did not dive as deep as males in both years. Foraging success was lower for females than males during incubation only in 2003. Our results suggest that sexual differences, expressed as differences in the foraging parameters of males and females, only develop when Fuegian Sprat (Sprattus fuegensis), the main prey in this locality, is not abundant close to the colony. Females may be extending the volume of water they can exploit by extending the duration of trips (horizontal distance), whereas males do so by diving deeper (vertical distance). Our results show the fundamental differences in foraging strategies between the sexes in Magellanic Penguin are a consequence of environmental conditions not morphological differences between sexes. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-05 |
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/11336/94845 Raya Rey, Andrea Nélida; Pütz, Klemens; Scioscia, Gabriela; Lthi, Benno; Schiavini, Adrian Carlos Miguel; Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding; Csiro Publishing; Emu; 112; 2; 5-2012; 90-96 0158-4197 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/94845 |
identifier_str_mv |
Raya Rey, Andrea Nélida; Pütz, Klemens; Scioscia, Gabriela; Lthi, Benno; Schiavini, Adrian Carlos Miguel; Sexual differences in the foraging behaviour of Magellanic Penguins related to stage of breeding; Csiro Publishing; Emu; 112; 2; 5-2012; 90-96 0158-4197 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1071/MU11065 info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/abs/10.1071/MU11065 |
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 |
Csiro Publishing |
publisher.none.fl_str_mv |
Csiro Publishing |
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_ |
1842269672062320640 |
score |
13.13397 |