Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel

Autores
Scioscia, Gabriela; Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Florentin, Olga Viviana; Schiavini, Adrian Carlos Miguel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Knowledge of seabirds’ diet at each breeding site and its temporal variation is key to understanding and evaluating how changes in marine resources affect each seabird population. In this study, we determined the diet of Magellanic penguins (MP, Spheniscus magellanicus) at Martillo Island, accounting for sex, breeding stage and year. We analyzed a total of 144 stomach contents during three consecutive breeding seasons (2006–2007, 2007–2008 and 2008–2009) and stages (incubation, early and late chick-rearing). MP fed mainly on fuegian sprat (Sprattus fuegensis), which represented 75 % of the biomass consumed by birds during the entire study. The next important prey was squat lobster (Munida gregaria), followed by Patagonian squid (Loligo gahi). Both sexes consumed similar prey items. We observed variation in diet relative composition among breeding years and stages. Fuegian sprat consumption decreased throughout the years whereas squat lobster increased. Penguins consumed a higher proportion of squat lobster and Patagonian squid during the incubation stage than in the chick-rearing stages, whereas fuegian sprat was almost the only prey item consumed during the late chick-rearing stage. MPs show certain flexibility in the use of resources probably as a response to changes in prey populations. Variability in the diet among different reproductive stages could be related to changes in the distribution and abundance of their main prey near the colony during the breeding season together with changes in the energy requirements of seabirds.
Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Saenz Samaniego, Ricardo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Florentin, Olga Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
Diet Composition
Seabirds
Sub-Antartic
Temporal Fluctuation
Tierra del Fuego
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:11336/5457
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/5457
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle ChannelScioscia, GabrielaRaya Rey, Andrea NélidaSaenz Samaniego, Ricardo AndresFlorentin, Olga VivianaSchiavini, Adrian Carlos MiguelDiet CompositionSeabirdsSub-AntarticTemporal FluctuationTierra del Fuegohttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Knowledge of seabirds’ diet at each breeding site and its temporal variation is key to understanding and evaluating how changes in marine resources affect each seabird population. In this study, we determined the diet of Magellanic penguins (MP, Spheniscus magellanicus) at Martillo Island, accounting for sex, breeding stage and year. We analyzed a total of 144 stomach contents during three consecutive breeding seasons (2006–2007, 2007–2008 and 2008–2009) and stages (incubation, early and late chick-rearing). MP fed mainly on fuegian sprat (Sprattus fuegensis), which represented 75 % of the biomass consumed by birds during the entire study. The next important prey was squat lobster (Munida gregaria), followed by Patagonian squid (Loligo gahi). Both sexes consumed similar prey items. We observed variation in diet relative composition among breeding years and stages. Fuegian sprat consumption decreased throughout the years whereas squat lobster increased. Penguins consumed a higher proportion of squat lobster and Patagonian squid during the incubation stage than in the chick-rearing stages, whereas fuegian sprat was almost the only prey item consumed during the late chick-rearing stage. MPs show certain flexibility in the use of resources probably as a response to changes in prey populations. Variability in the diet among different reproductive stages could be related to changes in the distribution and abundance of their main prey near the colony during the breeding season together with changes in the energy requirements of seabirds.Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Saenz Samaniego, Ricardo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Florentin, Olga Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaSpringer2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5457Scioscia, Gabriela; Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Florentin, Olga Viviana; Schiavini, Adrian Carlos Miguel; Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel; Springer; Polar Biology; 37; 10; 7-2014; 1421-14330722-4060enginfo:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00300-014-1532-8info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-014-1532-8info:eu-repo/semantics/altIdentifier/wos/10.1007/s00300-014-1532-8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:26:43Zoai:ri.conicet.gov.ar:11336/5457instacron: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:34982025-10-22 11:26:43.917CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
title Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
spellingShingle Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
Scioscia, Gabriela
Diet Composition
Seabirds
Sub-Antartic
Temporal Fluctuation
Tierra del Fuego
title_short Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
title_full Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
title_fullStr Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
title_full_unstemmed Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
title_sort Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel
dc.creator.none.fl_str_mv Scioscia, Gabriela
Raya Rey, Andrea Nélida
Saenz Samaniego, Ricardo Andres
Florentin, Olga Viviana
Schiavini, Adrian Carlos Miguel
author Scioscia, Gabriela
author_facet Scioscia, Gabriela
Raya Rey, Andrea Nélida
Saenz Samaniego, Ricardo Andres
Florentin, Olga Viviana
Schiavini, Adrian Carlos Miguel
author_role author
author2 Raya Rey, Andrea Nélida
Saenz Samaniego, Ricardo Andres
Florentin, Olga Viviana
Schiavini, Adrian Carlos Miguel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Diet Composition
Seabirds
Sub-Antartic
Temporal Fluctuation
Tierra del Fuego
topic Diet Composition
Seabirds
Sub-Antartic
Temporal Fluctuation
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 Knowledge of seabirds’ diet at each breeding site and its temporal variation is key to understanding and evaluating how changes in marine resources affect each seabird population. In this study, we determined the diet of Magellanic penguins (MP, Spheniscus magellanicus) at Martillo Island, accounting for sex, breeding stage and year. We analyzed a total of 144 stomach contents during three consecutive breeding seasons (2006–2007, 2007–2008 and 2008–2009) and stages (incubation, early and late chick-rearing). MP fed mainly on fuegian sprat (Sprattus fuegensis), which represented 75 % of the biomass consumed by birds during the entire study. The next important prey was squat lobster (Munida gregaria), followed by Patagonian squid (Loligo gahi). Both sexes consumed similar prey items. We observed variation in diet relative composition among breeding years and stages. Fuegian sprat consumption decreased throughout the years whereas squat lobster increased. Penguins consumed a higher proportion of squat lobster and Patagonian squid during the incubation stage than in the chick-rearing stages, whereas fuegian sprat was almost the only prey item consumed during the late chick-rearing stage. MPs show certain flexibility in the use of resources probably as a response to changes in prey populations. Variability in the diet among different reproductive stages could be related to changes in the distribution and abundance of their main prey near the colony during the breeding season together with changes in the energy requirements of seabirds.
Fil: Scioscia, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Raya Rey, Andrea Nélida. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Saenz Samaniego, Ricardo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Florentin, Olga Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Schiavini, Adrian Carlos Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description Knowledge of seabirds’ diet at each breeding site and its temporal variation is key to understanding and evaluating how changes in marine resources affect each seabird population. In this study, we determined the diet of Magellanic penguins (MP, Spheniscus magellanicus) at Martillo Island, accounting for sex, breeding stage and year. We analyzed a total of 144 stomach contents during three consecutive breeding seasons (2006–2007, 2007–2008 and 2008–2009) and stages (incubation, early and late chick-rearing). MP fed mainly on fuegian sprat (Sprattus fuegensis), which represented 75 % of the biomass consumed by birds during the entire study. The next important prey was squat lobster (Munida gregaria), followed by Patagonian squid (Loligo gahi). Both sexes consumed similar prey items. We observed variation in diet relative composition among breeding years and stages. Fuegian sprat consumption decreased throughout the years whereas squat lobster increased. Penguins consumed a higher proportion of squat lobster and Patagonian squid during the incubation stage than in the chick-rearing stages, whereas fuegian sprat was almost the only prey item consumed during the late chick-rearing stage. MPs show certain flexibility in the use of resources probably as a response to changes in prey populations. Variability in the diet among different reproductive stages could be related to changes in the distribution and abundance of their main prey near the colony during the breeding season together with changes in the energy requirements of seabirds.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
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/11336/5457
Scioscia, Gabriela; Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Florentin, Olga Viviana; Schiavini, Adrian Carlos Miguel; Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel; Springer; Polar Biology; 37; 10; 7-2014; 1421-1433
0722-4060
url http://hdl.handle.net/11336/5457
identifier_str_mv Scioscia, Gabriela; Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Florentin, Olga Viviana; Schiavini, Adrian Carlos Miguel; Intra and inter-annual variation in the diet of Magellanic penguin (Spheniscus magellanicus) at Martillo Island, Beagle Channel; Springer; Polar Biology; 37; 10; 7-2014; 1421-1433
0722-4060
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00300-014-1532-8
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-014-1532-8
info:eu-repo/semantics/altIdentifier/wos/10.1007/s00300-014-1532-8
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 Springer
publisher.none.fl_str_mv Springer
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
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score 13.229304

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