Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui
- Autores
- Barbini, Santiago Aldo; Lucifora, Luis Omar
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Elasmobranch predation has important effects on marine ecosystems. Identifying the main correlates of the feeding habits of skates is of paramount importance for determining their ecological role. We tested the hypotheses that the diet of the spotback skate, Atlantoraja castelnaui, off Uruguay and northern Argentina, changes with increasing body size, between seasons and regions and that prey size increased with predator's size using a multiple-hypothesis modelling approach. A. castelnaui preyed mainly on teleosts, followed by cephalopods, elasmobranchs and decapods. Small individuals of A. castelnaui consumed decapods and large individuals ate elasmobranchs and cephalopods. The consumption of teleosts was constant along the ontogeny but differed between seasons; more demersal-benthic teleosts were consumed in the cold season, whereas more benthic teleosts were eaten in the warm season. Also, A. castelnaui consumed more cephalopods in the warm season than in the cold season. Benthic teleosts were consumed more in the south region, whereas decapods were eaten more in the north region. A. castelnaui is able to consume larger teleosts as it grows. We conclude that A. castelnaui is a versatile, mainly piscivorous, consumer that shifts its diet with increasing body size and in response to seasonal and regional changes in prey abundance or distribution.
Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lucifora, Luis Omar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Misiones; Argentina - Materia
-
ARGENTINA
DIET VARIATION
PREDATION
RAJIDAE
URUGUAY - 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:11336/195441
Ver los metadatos del registro completo
id |
CONICETDig_3edbf82879c835f1b730e4eee9f15a0b |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/195441 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnauiBarbini, Santiago AldoLucifora, Luis OmarARGENTINADIET VARIATIONPREDATIONRAJIDAEURUGUAYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Elasmobranch predation has important effects on marine ecosystems. Identifying the main correlates of the feeding habits of skates is of paramount importance for determining their ecological role. We tested the hypotheses that the diet of the spotback skate, Atlantoraja castelnaui, off Uruguay and northern Argentina, changes with increasing body size, between seasons and regions and that prey size increased with predator's size using a multiple-hypothesis modelling approach. A. castelnaui preyed mainly on teleosts, followed by cephalopods, elasmobranchs and decapods. Small individuals of A. castelnaui consumed decapods and large individuals ate elasmobranchs and cephalopods. The consumption of teleosts was constant along the ontogeny but differed between seasons; more demersal-benthic teleosts were consumed in the cold season, whereas more benthic teleosts were eaten in the warm season. Also, A. castelnaui consumed more cephalopods in the warm season than in the cold season. Benthic teleosts were consumed more in the south region, whereas decapods were eaten more in the north region. A. castelnaui is able to consume larger teleosts as it grows. We conclude that A. castelnaui is a versatile, mainly piscivorous, consumer that shifts its diet with increasing body size and in response to seasonal and regional changes in prey abundance or distribution.Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lucifora, Luis Omar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Misiones; ArgentinaCsiro Publishing2012-02info: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/11336/195441Barbini, Santiago Aldo; Lucifora, Luis Omar; Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui; Csiro Publishing; Marine and Freshwater Research; 63; 2; 2-2012; 180-1881323-1650CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1071/MF11170info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:35:57Zoai:ri.conicet.gov.ar:11336/195441instacron: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 09:35:58.193CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
title |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
spellingShingle |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui Barbini, Santiago Aldo ARGENTINA DIET VARIATION PREDATION RAJIDAE URUGUAY |
title_short |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
title_full |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
title_fullStr |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
title_full_unstemmed |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
title_sort |
Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui |
dc.creator.none.fl_str_mv |
Barbini, Santiago Aldo Lucifora, Luis Omar |
author |
Barbini, Santiago Aldo |
author_facet |
Barbini, Santiago Aldo Lucifora, Luis Omar |
author_role |
author |
author2 |
Lucifora, Luis Omar |
author2_role |
author |
dc.subject.none.fl_str_mv |
ARGENTINA DIET VARIATION PREDATION RAJIDAE URUGUAY |
topic |
ARGENTINA DIET VARIATION PREDATION RAJIDAE URUGUAY |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Elasmobranch predation has important effects on marine ecosystems. Identifying the main correlates of the feeding habits of skates is of paramount importance for determining their ecological role. We tested the hypotheses that the diet of the spotback skate, Atlantoraja castelnaui, off Uruguay and northern Argentina, changes with increasing body size, between seasons and regions and that prey size increased with predator's size using a multiple-hypothesis modelling approach. A. castelnaui preyed mainly on teleosts, followed by cephalopods, elasmobranchs and decapods. Small individuals of A. castelnaui consumed decapods and large individuals ate elasmobranchs and cephalopods. The consumption of teleosts was constant along the ontogeny but differed between seasons; more demersal-benthic teleosts were consumed in the cold season, whereas more benthic teleosts were eaten in the warm season. Also, A. castelnaui consumed more cephalopods in the warm season than in the cold season. Benthic teleosts were consumed more in the south region, whereas decapods were eaten more in the north region. A. castelnaui is able to consume larger teleosts as it grows. We conclude that A. castelnaui is a versatile, mainly piscivorous, consumer that shifts its diet with increasing body size and in response to seasonal and regional changes in prey abundance or distribution. Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lucifora, Luis Omar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Misiones; Argentina |
description |
Elasmobranch predation has important effects on marine ecosystems. Identifying the main correlates of the feeding habits of skates is of paramount importance for determining their ecological role. We tested the hypotheses that the diet of the spotback skate, Atlantoraja castelnaui, off Uruguay and northern Argentina, changes with increasing body size, between seasons and regions and that prey size increased with predator's size using a multiple-hypothesis modelling approach. A. castelnaui preyed mainly on teleosts, followed by cephalopods, elasmobranchs and decapods. Small individuals of A. castelnaui consumed decapods and large individuals ate elasmobranchs and cephalopods. The consumption of teleosts was constant along the ontogeny but differed between seasons; more demersal-benthic teleosts were consumed in the cold season, whereas more benthic teleosts were eaten in the warm season. Also, A. castelnaui consumed more cephalopods in the warm season than in the cold season. Benthic teleosts were consumed more in the south region, whereas decapods were eaten more in the north region. A. castelnaui is able to consume larger teleosts as it grows. We conclude that A. castelnaui is a versatile, mainly piscivorous, consumer that shifts its diet with increasing body size and in response to seasonal and regional changes in prey abundance or distribution. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02 |
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/11336/195441 Barbini, Santiago Aldo; Lucifora, Luis Omar; Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui; Csiro Publishing; Marine and Freshwater Research; 63; 2; 2-2012; 180-188 1323-1650 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/195441 |
identifier_str_mv |
Barbini, Santiago Aldo; Lucifora, Luis Omar; Feeding habits of a large endangered skate from the south-west Atlantic: The spotback skate, Atlantoraja castelnaui; Csiro Publishing; Marine and Freshwater Research; 63; 2; 2-2012; 180-188 1323-1650 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/MF11170 |
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 |
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_ |
1844613124696571904 |
score |
13.070432 |