Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic

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 pre...

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Detalles Bibliográficos
Publicado:	2008
Materias:	Argentina Bathyraja Broad nose skate Elasmobranchs Trophic ecology dietary shift fish food availability niche breadth stomach content taxonomy Atlantic Ocean Atlantic Ocean (Southwest) Bathyraja brachyurops Chondrichthyes Elasmobranchii Isopoda Pisces Rajidae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v72_n4_p701_Belleggia http://hdl.handle.net/20.500.12110/paper_02148358_v72_n4_p701_Belleggia
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_02148358_v72_n4_p701_Belleggia
record_format	dspace
spelling	paper:paper_02148358_v72_n4_p701_Belleggia2023-06-08T15:20:56Z Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic 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 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. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v72_n4_p701_Belleggia http://hdl.handle.net/20.500.12110/paper_02148358_v72_n4_p701_Belleggia
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
topic_facet	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
description	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.
title	Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
title_short	Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
title_full	Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
title_fullStr	Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
title_full_unstemmed	Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic
title_sort	food habits of the broad nose skate, bathyraja brachyurops (chondrichthyes, rajidae), in the south-west atlantic
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02148358_v72_n4_p701_Belleggia http://hdl.handle.net/20.500.12110/paper_02148358_v72_n4_p701_Belleggia
_version_	1768544862463852544

Food habits of the broad nose skate, Bathyraja brachyurops (Chondrichthyes, Rajidae), in the south-west Atlantic

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