Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina

Autores
Yorio, Pablo Martin; Copello, Sofía; Kuba, Luisa; Gosztonyi, Atila Esteban; Quintana, Flavio Roberto
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Diets of breeding Imperial Cormorants Phalacrocorax atriceps were studied at two breeding colonies, Islas Blancas and Isla Arce, located approximately 30 km apart in an area subject to increasing fishing pressure off Central Patagonia, Argentina. The goal was to assess differences between locations and diet variation among stages of the breeding cycle. Pellet casts (403 and 358 pellets per colony, respectively) were collected from November 2002 to February 2003. Analyses of the pellets revealed that Imperial Cormorants at Islas Blancas and Isla Arce fed on at least 25 and 23 prey types, respectively. Fish showed the highest frequency of occurrence at both colonies (> 70%), followed by crustaceans and molluscs. Of the fish prey, Merluccius hubbsi (2271%), Engranlis anchoita (1651%) and Raneya brasiliensis (548%) showed the highest frequencies of occurrence, depending on the colony and breeding stage. At Islas Blancas, the consumption of fish and crustaceans was similar among breeding stages (incubation, young chicks and old chicks), while it was significantly different at Isla Arce. Overall contribution by frequency of occurrence showed that M. hubbsi was the most frequent prey at Islas Blancas (58%), and E. anchoita and Pleoticus muelleri were more frequent at Isla Arce (48 and 45%, respectively). Also, overall contribution by mass of the main fish prey indicated differences between colonies. Given the commercial value of the main prey species, cormorant feeding requirements and spatial ecological needs should be included as considerations in coastal fisheries management and future development.
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
Fil: Copello, Sofía. Universidad Nacional de Mar del Plata; Argentina
Fil: Kuba, Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gosztonyi, Atila Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
Materia
Argentina
Diet
Imperial Cormorant
Patagonia
Phalacrocorax Atriceps
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:11336/63174
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/63174
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, ArgentinaYorio, Pablo MartinCopello, SofíaKuba, LuisaGosztonyi, Atila EstebanQuintana, Flavio RobertoArgentinaDietImperial CormorantPatagoniaPhalacrocorax Atricepshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Diets of breeding Imperial Cormorants Phalacrocorax atriceps were studied at two breeding colonies, Islas Blancas and Isla Arce, located approximately 30 km apart in an area subject to increasing fishing pressure off Central Patagonia, Argentina. The goal was to assess differences between locations and diet variation among stages of the breeding cycle. Pellet casts (403 and 358 pellets per colony, respectively) were collected from November 2002 to February 2003. Analyses of the pellets revealed that Imperial Cormorants at Islas Blancas and Isla Arce fed on at least 25 and 23 prey types, respectively. Fish showed the highest frequency of occurrence at both colonies (> 70%), followed by crustaceans and molluscs. Of the fish prey, Merluccius hubbsi (2271%), Engranlis anchoita (1651%) and Raneya brasiliensis (548%) showed the highest frequencies of occurrence, depending on the colony and breeding stage. At Islas Blancas, the consumption of fish and crustaceans was similar among breeding stages (incubation, young chicks and old chicks), while it was significantly different at Isla Arce. Overall contribution by frequency of occurrence showed that M. hubbsi was the most frequent prey at Islas Blancas (58%), and E. anchoita and Pleoticus muelleri were more frequent at Isla Arce (48 and 45%, respectively). Also, overall contribution by mass of the main fish prey indicated differences between colonies. Given the commercial value of the main prey species, cormorant feeding requirements and spatial ecological needs should be included as considerations in coastal fisheries management and future development.Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados UnidosFil: Copello, Sofía. Universidad Nacional de Mar del Plata; ArgentinaFil: Kuba, Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Gosztonyi, Atila Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados UnidosWaterbird Society2010-03info: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/11336/63174Yorio, Pablo Martin; Copello, Sofía; Kuba, Luisa; Gosztonyi, Atila Esteban; Quintana, Flavio Roberto; Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina; Waterbird Society; Waterbirds; 33; 1; 3-2010; 70-781524-46951938-5390CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1675/063.033.0108info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1675/063.033.0108info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:54:15Zoai:ri.conicet.gov.ar:11336/63174instacron: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 09:54:16.031CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
title Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
spellingShingle Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
Yorio, Pablo Martin
Argentina
Diet
Imperial Cormorant
Patagonia
Phalacrocorax Atriceps
title_short Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
title_full Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
title_fullStr Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
title_full_unstemmed Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
title_sort Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina
dc.creator.none.fl_str_mv Yorio, Pablo Martin
Copello, Sofía
Kuba, Luisa
Gosztonyi, Atila Esteban
Quintana, Flavio Roberto
author Yorio, Pablo Martin
author_facet Yorio, Pablo Martin
Copello, Sofía
Kuba, Luisa
Gosztonyi, Atila Esteban
Quintana, Flavio Roberto
author_role author
author2 Copello, Sofía
Kuba, Luisa
Gosztonyi, Atila Esteban
Quintana, Flavio Roberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Argentina
Diet
Imperial Cormorant
Patagonia
Phalacrocorax Atriceps
topic Argentina
Diet
Imperial Cormorant
Patagonia
Phalacrocorax Atriceps
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Diets of breeding Imperial Cormorants Phalacrocorax atriceps were studied at two breeding colonies, Islas Blancas and Isla Arce, located approximately 30 km apart in an area subject to increasing fishing pressure off Central Patagonia, Argentina. The goal was to assess differences between locations and diet variation among stages of the breeding cycle. Pellet casts (403 and 358 pellets per colony, respectively) were collected from November 2002 to February 2003. Analyses of the pellets revealed that Imperial Cormorants at Islas Blancas and Isla Arce fed on at least 25 and 23 prey types, respectively. Fish showed the highest frequency of occurrence at both colonies (> 70%), followed by crustaceans and molluscs. Of the fish prey, Merluccius hubbsi (2271%), Engranlis anchoita (1651%) and Raneya brasiliensis (548%) showed the highest frequencies of occurrence, depending on the colony and breeding stage. At Islas Blancas, the consumption of fish and crustaceans was similar among breeding stages (incubation, young chicks and old chicks), while it was significantly different at Isla Arce. Overall contribution by frequency of occurrence showed that M. hubbsi was the most frequent prey at Islas Blancas (58%), and E. anchoita and Pleoticus muelleri were more frequent at Isla Arce (48 and 45%, respectively). Also, overall contribution by mass of the main fish prey indicated differences between colonies. Given the commercial value of the main prey species, cormorant feeding requirements and spatial ecological needs should be included as considerations in coastal fisheries management and future development.
Fil: Yorio, Pablo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
Fil: Copello, Sofía. Universidad Nacional de Mar del Plata; Argentina
Fil: Kuba, Luisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Gosztonyi, Atila Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
Fil: Quintana, Flavio Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Wildlife Conservation Society; Estados Unidos
description Diets of breeding Imperial Cormorants Phalacrocorax atriceps were studied at two breeding colonies, Islas Blancas and Isla Arce, located approximately 30 km apart in an area subject to increasing fishing pressure off Central Patagonia, Argentina. The goal was to assess differences between locations and diet variation among stages of the breeding cycle. Pellet casts (403 and 358 pellets per colony, respectively) were collected from November 2002 to February 2003. Analyses of the pellets revealed that Imperial Cormorants at Islas Blancas and Isla Arce fed on at least 25 and 23 prey types, respectively. Fish showed the highest frequency of occurrence at both colonies (> 70%), followed by crustaceans and molluscs. Of the fish prey, Merluccius hubbsi (2271%), Engranlis anchoita (1651%) and Raneya brasiliensis (548%) showed the highest frequencies of occurrence, depending on the colony and breeding stage. At Islas Blancas, the consumption of fish and crustaceans was similar among breeding stages (incubation, young chicks and old chicks), while it was significantly different at Isla Arce. Overall contribution by frequency of occurrence showed that M. hubbsi was the most frequent prey at Islas Blancas (58%), and E. anchoita and Pleoticus muelleri were more frequent at Isla Arce (48 and 45%, respectively). Also, overall contribution by mass of the main fish prey indicated differences between colonies. Given the commercial value of the main prey species, cormorant feeding requirements and spatial ecological needs should be included as considerations in coastal fisheries management and future development.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/63174
Yorio, Pablo Martin; Copello, Sofía; Kuba, Luisa; Gosztonyi, Atila Esteban; Quintana, Flavio Roberto; Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina; Waterbird Society; Waterbirds; 33; 1; 3-2010; 70-78
1524-4695
1938-5390
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63174
identifier_str_mv Yorio, Pablo Martin; Copello, Sofía; Kuba, Luisa; Gosztonyi, Atila Esteban; Quintana, Flavio Roberto; Diet of imperial Cormorants phalacrocorax atriceps breeding at Central Patagonia, Argentina; Waterbird Society; Waterbirds; 33; 1; 3-2010; 70-78
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/doi/10.1675/063.033.0108
info:eu-repo/semantics/altIdentifier/url/http://www.bioone.org/doi/abs/10.1675/063.033.0108
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_ 1842269275071447040
score 13.13397

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