Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic

Autores
Barbini, Santiago Aldo; Lucifora, Luis Omar
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Knowing how sympatric species partition their resources is very important for understanding the mechanisms that influence marine community structure. We test the hypothesis of resource partitioning between two sympatric, closely related, morphologically similar, small skates, Psammobatis bergi and P. extenta. The diets of the two species were different. P. bergi fed predominantly on crabs, amphipods, isopods and polychaetes. P. extenta consumed mainly amphipods and shrimps. Changes in the diet with body size, maturity stage and season varied among species. The consumption of amphipods decreased with increasing size of both species. The consumption of crabs increased with increasing size of P. bergi, but decreased with increasing size of P. extenta. The consumption of cumaceans increased with size of P. extenta and decreased with size of P. bergi. Adults preyed on isopods more heavily than juveniles for both species. P. extenta preyed on shrimps more heavily in the warm season and, on the contrary P. bergi preyed on shrimps more often in the cold season. The dietary breadth was higher in P. bergi than in P. extenta and was higher in females than in males. Our results showed that these sympatric and closely-related species have clearly different trophic traits.
Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras, 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. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina
Materia
Dietary Breadth
Elasmobranch
Food Partitioning
Psammobatis
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:11336/45583
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern AtlanticBarbini, Santiago AldoLucifora, Luis OmarDietary BreadthElasmobranchFood PartitioningPsammobatishttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Knowing how sympatric species partition their resources is very important for understanding the mechanisms that influence marine community structure. We test the hypothesis of resource partitioning between two sympatric, closely related, morphologically similar, small skates, Psammobatis bergi and P. extenta. The diets of the two species were different. P. bergi fed predominantly on crabs, amphipods, isopods and polychaetes. P. extenta consumed mainly amphipods and shrimps. Changes in the diet with body size, maturity stage and season varied among species. The consumption of amphipods decreased with increasing size of both species. The consumption of crabs increased with increasing size of P. bergi, but decreased with increasing size of P. extenta. The consumption of cumaceans increased with size of P. extenta and decreased with size of P. bergi. Adults preyed on isopods more heavily than juveniles for both species. P. extenta preyed on shrimps more heavily in the warm season and, on the contrary P. bergi preyed on shrimps more often in the cold season. The dietary breadth was higher in P. bergi than in P. extenta and was higher in females than in males. Our results showed that these sympatric and closely-related species have clearly different trophic traits.Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras, 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. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; ArgentinaCsiro Publishing2012-11info: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/11336/45583Barbini, Santiago Aldo; Lucifora, Luis Omar; Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic; Csiro Publishing; Marine and Freshwater Research; 63; 10; 11-2012; 905-9131323-1650CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1071/MF12131info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/MF/MF12131info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:27Zoai:ri.conicet.gov.ar:11336/45583instacron: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 10:02:27.798CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
title Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
spellingShingle Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
Barbini, Santiago Aldo
Dietary Breadth
Elasmobranch
Food Partitioning
Psammobatis
title_short Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
title_full Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
title_fullStr Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
title_full_unstemmed Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
title_sort Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
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 Dietary Breadth
Elasmobranch
Food Partitioning
Psammobatis
topic Dietary Breadth
Elasmobranch
Food Partitioning
Psammobatis
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Knowing how sympatric species partition their resources is very important for understanding the mechanisms that influence marine community structure. We test the hypothesis of resource partitioning between two sympatric, closely related, morphologically similar, small skates, Psammobatis bergi and P. extenta. The diets of the two species were different. P. bergi fed predominantly on crabs, amphipods, isopods and polychaetes. P. extenta consumed mainly amphipods and shrimps. Changes in the diet with body size, maturity stage and season varied among species. The consumption of amphipods decreased with increasing size of both species. The consumption of crabs increased with increasing size of P. bergi, but decreased with increasing size of P. extenta. The consumption of cumaceans increased with size of P. extenta and decreased with size of P. bergi. Adults preyed on isopods more heavily than juveniles for both species. P. extenta preyed on shrimps more heavily in the warm season and, on the contrary P. bergi preyed on shrimps more often in the cold season. The dietary breadth was higher in P. bergi than in P. extenta and was higher in females than in males. Our results showed that these sympatric and closely-related species have clearly different trophic traits.
Fil: Barbini, Santiago Aldo. Universidad Nacional de Mar del Plata; Argentina. Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras, 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. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú | Universidad Nacional de Misiones. Instituto de Biología Subtropical. Instituto de Biología Subtropical - Nodo Puerto Iguazú; Argentina
description Knowing how sympatric species partition their resources is very important for understanding the mechanisms that influence marine community structure. We test the hypothesis of resource partitioning between two sympatric, closely related, morphologically similar, small skates, Psammobatis bergi and P. extenta. The diets of the two species were different. P. bergi fed predominantly on crabs, amphipods, isopods and polychaetes. P. extenta consumed mainly amphipods and shrimps. Changes in the diet with body size, maturity stage and season varied among species. The consumption of amphipods decreased with increasing size of both species. The consumption of crabs increased with increasing size of P. bergi, but decreased with increasing size of P. extenta. The consumption of cumaceans increased with size of P. extenta and decreased with size of P. bergi. Adults preyed on isopods more heavily than juveniles for both species. P. extenta preyed on shrimps more heavily in the warm season and, on the contrary P. bergi preyed on shrimps more often in the cold season. The dietary breadth was higher in P. bergi than in P. extenta and was higher in females than in males. Our results showed that these sympatric and closely-related species have clearly different trophic traits.
publishDate 2012
dc.date.none.fl_str_mv 2012-11
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/11336/45583
Barbini, Santiago Aldo; Lucifora, Luis Omar; Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic; Csiro Publishing; Marine and Freshwater Research; 63; 10; 11-2012; 905-913
1323-1650
CONICET Digital
CONICET
url http://hdl.handle.net/11336/45583
identifier_str_mv Barbini, Santiago Aldo; Lucifora, Luis Omar; Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic; Csiro Publishing; Marine and Freshwater Research; 63; 10; 11-2012; 905-913
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/MF12131
info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/MF/MF12131
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_ 1844613829022973952
score 13.070432

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