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Abstract:

Food habits of Bathyraja brachyurops were studied based on stomach content analyses of 346 specimens collected from research cruises carried out from 2003 to 2005 on the argentinean continental shelf (36°S-55°S). A total of 265 stomachs (76.6%) contained food, and thirty-five taxonomic levels of prey were identified. The most important prey were fishes followed by isopods. Trophic level analysis revealed that B. brachyurops is a tertiary consumer throughout its life history. There were no differences between sexes and regions in the diet composition, but dietary shifts with ontogeny were found. The levins' standardized index indicated wider niche breadth for small skates, whereas larger skate specimens showed a narrow niche breadth with a specialization in fishes.

Registro:

Documento: Artículo
Título:Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
Autor:Belleggia, M.; Mabragaña, E.; Figueroa, D.E.; Scenna, L.B.; Barbini, S.A.; Díaz De Astarloa, J.M.
Filiación:Laboratorio de Ictiología, FCEyN, Universidad Nacional de Mar del Plata (UNMdP), Funes 3350, Mar del Plata B7602AYL, Argentina
Museo del Mar, Colón 1114, Mar del Plata B7600FXR, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Comisión Investigaciones Científicas Gobierno de la Provincia de Buenos Aires (CIC), Buenos Aires, Argentina
Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo 1, Mar del Plata B7602HSA, Argentina
Idioma: Inglés
Palabras clave:Argentina; Bathyraja; Broad nose skate; Elasmobranchs; Trophic ecology; dietary shift; fish; food availability; niche breadth; stomach content; taxonomy; Atlantic Ocean; Atlantic Ocean (Southwest); Bathyraja; Bathyraja brachyurops; Chondrichthyes; Elasmobranchii; Isopoda; Pisces; Rajidae
Año:2008
Volumen:72
Número:4
Página de inicio:701
Página de fin:710
DOI: http://dx.doi.org/10.3989/scimar.2008.72n4701
Título revista:Scientia Marina
Título revista abreviado:Sci. Mar.
ISSN:02148358
CODEN:SCIME
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v72_n4_p701_Belleggia

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Citas:

---------- APA ----------
Belleggia, M., Mabragaña, E., Figueroa, D.E., Scenna, L.B., Barbini, S.A. & Díaz De Astarloa, J.M. (2008) . Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic. Scientia Marina, 72(4), 701-710.
http://dx.doi.org/10.3989/scimar.2008.72n4701
---------- CHICAGO ----------
Belleggia, M., Mabragaña, E., Figueroa, D.E., Scenna, L.B., Barbini, S.A., Díaz De Astarloa, J.M. "Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic" . Scientia Marina 72, no. 4 (2008) : 701-710.
http://dx.doi.org/10.3989/scimar.2008.72n4701
---------- MLA ----------
Belleggia, M., Mabragaña, E., Figueroa, D.E., Scenna, L.B., Barbini, S.A., Díaz De Astarloa, J.M. "Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic" . Scientia Marina, vol. 72, no. 4, 2008, pp. 701-710.
http://dx.doi.org/10.3989/scimar.2008.72n4701
---------- VANCOUVER ----------
Belleggia, M., Mabragaña, E., Figueroa, D.E., Scenna, L.B., Barbini, S.A., Díaz De Astarloa, J.M. Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic. Sci. Mar. 2008;72(4):701-710.
http://dx.doi.org/10.3989/scimar.2008.72n4701