Uniformity of diet composition of Brown Skua chicks at different ages and between siblings

Autores
Graña Grilli, Maricel; Marti, Lucas J.; Montalti, Diego
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The diet of chicks may change according to their growth and also vary between siblings due to their competitive relationship. Diet composition of 81 Brown Skua (Stercorarius antarcticus lonnbergi) chicks was analysed from regurgitated stomach contents in order to determine changes in diet composition related to chick age and differences between siblings. Fifty-nine of the samples belonged to chicks whose age was estimated by applying culmen measurement to a regression function. The remaining 22 samples belonged to 11 sibling pairs whose stomach contents were simultaneously sampled. The diet was constituted mostly by soft tissues of penguins. Marine resources were a minor part of the diet of chicks, appearing in the third week of their life. The qualitative composition of the stomach content of siblings was similar in most cases, but mass of regurgitates differed between siblings (1.3– 90.0% = 0.5–9 g), which suggests the potential existence of aggressive food monopolization by one sibling, an issue to be elucidated with further research.
Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Marti, Lucas J.. Universidad CAECE. Ciudad Buenos Aires; Argentina
Fil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina
Materia
Chick growth
sibling competition
Stercorarius antarcticus lonnbergi
stomach regurgitate
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:11336/32969
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Uniformity of diet composition of Brown Skua chicks at different ages and between siblingsGraña Grilli, MaricelMarti, Lucas J.Montalti, DiegoChick growthsibling competitionStercorarius antarcticus lonnbergistomach regurgitatehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The diet of chicks may change according to their growth and also vary between siblings due to their competitive relationship. Diet composition of 81 Brown Skua (Stercorarius antarcticus lonnbergi) chicks was analysed from regurgitated stomach contents in order to determine changes in diet composition related to chick age and differences between siblings. Fifty-nine of the samples belonged to chicks whose age was estimated by applying culmen measurement to a regression function. The remaining 22 samples belonged to 11 sibling pairs whose stomach contents were simultaneously sampled. The diet was constituted mostly by soft tissues of penguins. Marine resources were a minor part of the diet of chicks, appearing in the third week of their life. The qualitative composition of the stomach content of siblings was similar in most cases, but mass of regurgitates differed between siblings (1.3– 90.0% = 0.5–9 g), which suggests the potential existence of aggressive food monopolization by one sibling, an issue to be elucidated with further research.Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Marti, Lucas J.. Universidad CAECE. Ciudad Buenos Aires; ArgentinaFil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; ArgentinaSociedade Brasileira de Ornitologia2014-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/32969Montalti, Diego; Marti, Lucas J.; Graña Grilli, Maricel; Uniformity of diet composition of Brown Skua chicks at different ages and between siblings; Sociedade Brasileira de Ornitologia; Ararajuba; 22; 3; 10-2014; 265-2690103-5657CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www4.museu-goeldi.br/revistabrornito/revista/index.php/BJO/article/view/22_3_artigo4info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:56Zoai:ri.conicet.gov.ar:11336/32969instacron: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 10:05:56.992CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
title Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
spellingShingle Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
Graña Grilli, Maricel
Chick growth
sibling competition
Stercorarius antarcticus lonnbergi
stomach regurgitate
title_short Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
title_full Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
title_fullStr Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
title_full_unstemmed Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
title_sort Uniformity of diet composition of Brown Skua chicks at different ages and between siblings
dc.creator.none.fl_str_mv Graña Grilli, Maricel
Marti, Lucas J.
Montalti, Diego
author Graña Grilli, Maricel
author_facet Graña Grilli, Maricel
Marti, Lucas J.
Montalti, Diego
author_role author
author2 Marti, Lucas J.
Montalti, Diego
author2_role author
author
dc.subject.none.fl_str_mv Chick growth
sibling competition
Stercorarius antarcticus lonnbergi
stomach regurgitate
topic Chick growth
sibling competition
Stercorarius antarcticus lonnbergi
stomach regurgitate
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The diet of chicks may change according to their growth and also vary between siblings due to their competitive relationship. Diet composition of 81 Brown Skua (Stercorarius antarcticus lonnbergi) chicks was analysed from regurgitated stomach contents in order to determine changes in diet composition related to chick age and differences between siblings. Fifty-nine of the samples belonged to chicks whose age was estimated by applying culmen measurement to a regression function. The remaining 22 samples belonged to 11 sibling pairs whose stomach contents were simultaneously sampled. The diet was constituted mostly by soft tissues of penguins. Marine resources were a minor part of the diet of chicks, appearing in the third week of their life. The qualitative composition of the stomach content of siblings was similar in most cases, but mass of regurgitates differed between siblings (1.3– 90.0% = 0.5–9 g), which suggests the potential existence of aggressive food monopolization by one sibling, an issue to be elucidated with further research.
Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Marti, Lucas J.. Universidad CAECE. Ciudad Buenos Aires; Argentina
Fil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Departamento Científico Zoología Vertebrados; Argentina
description The diet of chicks may change according to their growth and also vary between siblings due to their competitive relationship. Diet composition of 81 Brown Skua (Stercorarius antarcticus lonnbergi) chicks was analysed from regurgitated stomach contents in order to determine changes in diet composition related to chick age and differences between siblings. Fifty-nine of the samples belonged to chicks whose age was estimated by applying culmen measurement to a regression function. The remaining 22 samples belonged to 11 sibling pairs whose stomach contents were simultaneously sampled. The diet was constituted mostly by soft tissues of penguins. Marine resources were a minor part of the diet of chicks, appearing in the third week of their life. The qualitative composition of the stomach content of siblings was similar in most cases, but mass of regurgitates differed between siblings (1.3– 90.0% = 0.5–9 g), which suggests the potential existence of aggressive food monopolization by one sibling, an issue to be elucidated with further research.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
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/11336/32969
Montalti, Diego; Marti, Lucas J.; Graña Grilli, Maricel; Uniformity of diet composition of Brown Skua chicks at different ages and between siblings; Sociedade Brasileira de Ornitologia; Ararajuba; 22; 3; 10-2014; 265-269
0103-5657
CONICET Digital
CONICET
url http://hdl.handle.net/11336/32969
identifier_str_mv Montalti, Diego; Marti, Lucas J.; Graña Grilli, Maricel; Uniformity of diet composition of Brown Skua chicks at different ages and between siblings; Sociedade Brasileira de Ornitologia; Ararajuba; 22; 3; 10-2014; 265-269
0103-5657
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www4.museu-goeldi.br/revistabrornito/revista/index.php/BJO/article/view/22_3_artigo4
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
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Ornitologia
publisher.none.fl_str_mv Sociedade Brasileira de Ornitologia
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_ 1842269935546400768
score 13.13397

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