Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)

Autores
Suarez, Nicolas Marcelo; Retana, Maria Valeria; Yorio, Pablo Martin
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Olrog's Gull (Larus atlanticus) is a species that feeds almost exclusively on intertidal crabs. The influence of feeding technique, food source, and habitat characteristics on the feeding rate of breeding individuals was examined at Bahía San Blas, Argentina, from September to December 2007. Olrog's Gulls used four feeding techniques, with more prey captured by pecking than by peck-digging, head submergence, or up-ending. Olrog's Gulls fed throughout the tidal cycle using different intertidal zones when they were exposed and covered by water. However, feeding techniques used in exposed intertidal areas (pecking and peck-digging) resulted in significantly higher feeding rates. Feeding rate increased with average prey density and was higher when feeding in structured environments, characterized by the presence of rocks or oysters and high densities of the intertidal crab Cyrtograpsus altimanus. The burrowing crab Neohelice granulata is the main component of the Olrog's Gull diet during most of the breeding cycle. Although average density of N. granulata in feeding patches was lower than that of C. altimanus, body size of the former was significantly larger and energy density of individuals higher, resulting in a higher energy profitability of unstructured habitats. Prey switching toward C. altimanus during the young chick stage observed in previous studies may result from the need to feed chicks with smaller prey.
Fil: Suarez, Nicolas Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Retana, Maria Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Yorio, Pablo Martin. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Materia
ARGENTINA
BAHÍA SAN BLAS PROTECTED AREA
CRABS
FEEDING BEHAVIOR
INTERTIDAL CRABS
LARUS ATLANTICUS
OLROG'S GULL
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:11336/26971
Acceder
id CONICETDig_3ff25e460e0b6ef1c5161addaa9f0913
oai_identifier_str oai:ri.conicet.gov.ar:11336/26971
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)Suarez, Nicolas MarceloRetana, Maria ValeriaYorio, Pablo MartinARGENTINABAHÍA SAN BLAS PROTECTED AREACRABSFEEDING BEHAVIORINTERTIDAL CRABSLARUS ATLANTICUSOLROG'S GULLhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The Olrog's Gull (Larus atlanticus) is a species that feeds almost exclusively on intertidal crabs. The influence of feeding technique, food source, and habitat characteristics on the feeding rate of breeding individuals was examined at Bahía San Blas, Argentina, from September to December 2007. Olrog's Gulls used four feeding techniques, with more prey captured by pecking than by peck-digging, head submergence, or up-ending. Olrog's Gulls fed throughout the tidal cycle using different intertidal zones when they were exposed and covered by water. However, feeding techniques used in exposed intertidal areas (pecking and peck-digging) resulted in significantly higher feeding rates. Feeding rate increased with average prey density and was higher when feeding in structured environments, characterized by the presence of rocks or oysters and high densities of the intertidal crab Cyrtograpsus altimanus. The burrowing crab Neohelice granulata is the main component of the Olrog's Gull diet during most of the breeding cycle. Although average density of N. granulata in feeding patches was lower than that of C. altimanus, body size of the former was significantly larger and energy density of individuals higher, resulting in a higher energy profitability of unstructured habitats. Prey switching toward C. altimanus during the young chick stage observed in previous studies may result from the need to feed chicks with smaller prey.Fil: Suarez, Nicolas Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaFil: Retana, Maria Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Yorio, Pablo Martin. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; ArgentinaWaterbird Society2013-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26971Suarez, Nicolas Marcelo; Retana, Maria Valeria; Yorio, Pablo Martin; Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus); Waterbird Society; Waterbirds (de Leon Springs, Fla.); 37; 1; 12-2013; 79-871524-46951938-5390CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1675/063.037.0110info:eu-repo/semantics/altIdentifier/doi/10.1675/063.037.0110info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:25Zoai:ri.conicet.gov.ar:11336/26971instacron: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:34982025-09-29 10:06:25.51CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
title Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
spellingShingle Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
Suarez, Nicolas Marcelo
ARGENTINA
BAHÍA SAN BLAS PROTECTED AREA
CRABS
FEEDING BEHAVIOR
INTERTIDAL CRABS
LARUS ATLANTICUS
OLROG'S GULL
title_short Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
title_full Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
title_fullStr Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
title_full_unstemmed Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
title_sort Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus)
dc.creator.none.fl_str_mv Suarez, Nicolas Marcelo
Retana, Maria Valeria
Yorio, Pablo Martin
author Suarez, Nicolas Marcelo
author_facet Suarez, Nicolas Marcelo
Retana, Maria Valeria
Yorio, Pablo Martin
author_role author
author2 Retana, Maria Valeria
Yorio, Pablo Martin
author2_role author
author
dc.subject.none.fl_str_mv ARGENTINA
BAHÍA SAN BLAS PROTECTED AREA
CRABS
FEEDING BEHAVIOR
INTERTIDAL CRABS
LARUS ATLANTICUS
OLROG'S GULL
topic ARGENTINA
BAHÍA SAN BLAS PROTECTED AREA
CRABS
FEEDING BEHAVIOR
INTERTIDAL CRABS
LARUS ATLANTICUS
OLROG'S GULL
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 Olrog's Gull (Larus atlanticus) is a species that feeds almost exclusively on intertidal crabs. The influence of feeding technique, food source, and habitat characteristics on the feeding rate of breeding individuals was examined at Bahía San Blas, Argentina, from September to December 2007. Olrog's Gulls used four feeding techniques, with more prey captured by pecking than by peck-digging, head submergence, or up-ending. Olrog's Gulls fed throughout the tidal cycle using different intertidal zones when they were exposed and covered by water. However, feeding techniques used in exposed intertidal areas (pecking and peck-digging) resulted in significantly higher feeding rates. Feeding rate increased with average prey density and was higher when feeding in structured environments, characterized by the presence of rocks or oysters and high densities of the intertidal crab Cyrtograpsus altimanus. The burrowing crab Neohelice granulata is the main component of the Olrog's Gull diet during most of the breeding cycle. Although average density of N. granulata in feeding patches was lower than that of C. altimanus, body size of the former was significantly larger and energy density of individuals higher, resulting in a higher energy profitability of unstructured habitats. Prey switching toward C. altimanus during the young chick stage observed in previous studies may result from the need to feed chicks with smaller prey.
Fil: Suarez, Nicolas Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
Fil: Retana, Maria Valeria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Yorio, Pablo Martin. Wildlife Conservation Society; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina
description The Olrog's Gull (Larus atlanticus) is a species that feeds almost exclusively on intertidal crabs. The influence of feeding technique, food source, and habitat characteristics on the feeding rate of breeding individuals was examined at Bahía San Blas, Argentina, from September to December 2007. Olrog's Gulls used four feeding techniques, with more prey captured by pecking than by peck-digging, head submergence, or up-ending. Olrog's Gulls fed throughout the tidal cycle using different intertidal zones when they were exposed and covered by water. However, feeding techniques used in exposed intertidal areas (pecking and peck-digging) resulted in significantly higher feeding rates. Feeding rate increased with average prey density and was higher when feeding in structured environments, characterized by the presence of rocks or oysters and high densities of the intertidal crab Cyrtograpsus altimanus. The burrowing crab Neohelice granulata is the main component of the Olrog's Gull diet during most of the breeding cycle. Although average density of N. granulata in feeding patches was lower than that of C. altimanus, body size of the former was significantly larger and energy density of individuals higher, resulting in a higher energy profitability of unstructured habitats. Prey switching toward C. altimanus during the young chick stage observed in previous studies may result from the need to feed chicks with smaller prey.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
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/11336/26971
Suarez, Nicolas Marcelo; Retana, Maria Valeria; Yorio, Pablo Martin; Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus); Waterbird Society; Waterbirds (de Leon Springs, Fla.); 37; 1; 12-2013; 79-87
1524-4695
1938-5390
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26971
identifier_str_mv Suarez, Nicolas Marcelo; Retana, Maria Valeria; Yorio, Pablo Martin; Effect of feeding technique and prey characteristics on the feeding rate of Olrog's Gulls (Larus atlanticus); Waterbird Society; Waterbirds (de Leon Springs, Fla.); 37; 1; 12-2013; 79-87
1524-4695
1938-5390
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://www.bioone.org/doi/abs/10.1675/063.037.0110
info:eu-repo/semantics/altIdentifier/doi/10.1675/063.037.0110
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
application/pdf
dc.publisher.none.fl_str_mv Waterbird Society
publisher.none.fl_str_mv Waterbird Society
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_ 1844613912232722432
score 13.070432

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