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dc.contributor.author
Barbini, Santiago Aldo
dc.contributor.author
Lucifora, Luis Omar
dc.date.available
2018-05-18T17:31:07Z
dc.date.issued
2012-11
dc.identifier.citation
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
dc.identifier.issn
1323-1650
dc.identifier.uri
http://hdl.handle.net/11336/45583
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Dietary Breadth
dc.subject
Elasmobranch
dc.subject
Food Partitioning
dc.subject
Psammobatis
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Ontogenetic diet shifts and food partitioning between two small sympatric skates (Chondrichthyes, Rajidae) in the Southwestern Atlantic
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-04T17:39:49Z
dc.journal.volume
63
dc.journal.number
10
dc.journal.pagination
905-913
dc.journal.pais
Australia
dc.journal.ciudad
Collingwood
dc.description.fil
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
dc.description.fil
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
dc.journal.title
Marine and Freshwater Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1071/MF12131
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/MF/MF12131


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