Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)

Gut contents of Pseudechinus magellanicuscollected from different habitats from Buenos Aires to Ushuaia were analyzed. In mussel beds off the Province of Buenos Aires at 50 m depth, the most important food items were Mytilus edulis platensisspat. In communities without Mytilus, food preferences were...

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Publicado:	2004
Materias:	Argentina Diet MDS Pedicellaria Sea urchin diet echinoderm feeding predation Atlantic Ocean Atlantic Ocean (Southwest) South America algae Animalia Aulacomya Bivalvia Cirripedia Echinodermata Echinoidea Ectocarpus Ectocarpus sp. Foraminifera Invertebrata Mytilidae Mytilus Mytilus edulis Ostracoda Ostreidae Polychaeta Pseudechinus Pseudechinus magellanicus Temnopleuridae Thoracica
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00785326_v58_n2_p91_Penchaszadeh http://hdl.handle.net/20.500.12110/paper_00785326_v58_n2_p91_Penchaszadeh
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00785326_v58_n2_p91_Penchaszadeh
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spelling	paper:paper_00785326_v58_n2_p91_Penchaszadeh2023-06-08T15:07:36Z Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina) Argentina Diet MDS Pedicellaria Sea urchin diet echinoderm feeding predation Argentina Atlantic Ocean Atlantic Ocean (Southwest) South America algae Animalia Aulacomya Bivalvia Cirripedia Echinodermata Echinoidea Ectocarpus Ectocarpus sp. Foraminifera Invertebrata Mytilidae Mytilus Mytilus edulis Ostracoda Ostreidae Polychaeta Pseudechinus Pseudechinus magellanicus Temnopleuridae Thoracica Gut contents of Pseudechinus magellanicuscollected from different habitats from Buenos Aires to Ushuaia were analyzed. In mussel beds off the Province of Buenos Aires at 50 m depth, the most important food items were Mytilus edulis platensisspat. In communities without Mytilus, food preferences were barnacles, foraminifer-ans, polychaetes and algae. In beds of the mytilid Aulacomya atraat a depth of 5-10m, main food items were oyster shell fragments and different algae: Rodophyta (leafy algae), Ectocarpus sp., and other algae. In Ushuaia the sea urchins preyed on ostracods, foraminiferans and algae. Multidimensional scaling ordination analyses showed that the diet of P. magellanicusdepends mostly on the kind of inhabited substrate. Our data indicate that P. magellanicusfrom Argentina is omnivorous, consuming any available food resource: they capture drift algae with the aboral tube feet, graze on sessile algae, and prey on other animals. The results suggest that the species play an important role in the community structure of the circa-littoral beds of Mytilus edulis platensis, mainly through an intense predation on bivalve spat. © 2004 Taylor & Francis Group, LLC. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00785326_v58_n2_p91_Penchaszadeh http://hdl.handle.net/20.500.12110/paper_00785326_v58_n2_p91_Penchaszadeh
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 Diet MDS Pedicellaria Sea urchin diet echinoderm feeding predation Argentina Atlantic Ocean Atlantic Ocean (Southwest) South America algae Animalia Aulacomya Bivalvia Cirripedia Echinodermata Echinoidea Ectocarpus Ectocarpus sp. Foraminifera Invertebrata Mytilidae Mytilus Mytilus edulis Ostracoda Ostreidae Polychaeta Pseudechinus Pseudechinus magellanicus Temnopleuridae Thoracica
spellingShingle	Argentina Diet MDS Pedicellaria Sea urchin diet echinoderm feeding predation Argentina Atlantic Ocean Atlantic Ocean (Southwest) South America algae Animalia Aulacomya Bivalvia Cirripedia Echinodermata Echinoidea Ectocarpus Ectocarpus sp. Foraminifera Invertebrata Mytilidae Mytilus Mytilus edulis Ostracoda Ostreidae Polychaeta Pseudechinus Pseudechinus magellanicus Temnopleuridae Thoracica Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
topic_facet	Argentina Diet MDS Pedicellaria Sea urchin diet echinoderm feeding predation Argentina Atlantic Ocean Atlantic Ocean (Southwest) South America algae Animalia Aulacomya Bivalvia Cirripedia Echinodermata Echinoidea Ectocarpus Ectocarpus sp. Foraminifera Invertebrata Mytilidae Mytilus Mytilus edulis Ostracoda Ostreidae Polychaeta Pseudechinus Pseudechinus magellanicus Temnopleuridae Thoracica
description	Gut contents of Pseudechinus magellanicuscollected from different habitats from Buenos Aires to Ushuaia were analyzed. In mussel beds off the Province of Buenos Aires at 50 m depth, the most important food items were Mytilus edulis platensisspat. In communities without Mytilus, food preferences were barnacles, foraminifer-ans, polychaetes and algae. In beds of the mytilid Aulacomya atraat a depth of 5-10m, main food items were oyster shell fragments and different algae: Rodophyta (leafy algae), Ectocarpus sp., and other algae. In Ushuaia the sea urchins preyed on ostracods, foraminiferans and algae. Multidimensional scaling ordination analyses showed that the diet of P. magellanicusdepends mostly on the kind of inhabited substrate. Our data indicate that P. magellanicusfrom Argentina is omnivorous, consuming any available food resource: they capture drift algae with the aboral tube feet, graze on sessile algae, and prey on other animals. The results suggest that the species play an important role in the community structure of the circa-littoral beds of Mytilus edulis platensis, mainly through an intense predation on bivalve spat. © 2004 Taylor & Francis Group, LLC.
title	Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
title_short	Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
title_full	Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
title_fullStr	Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
title_full_unstemmed	Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)
title_sort	feeding of pseudechinus magellanicus (philippi, 1857) (echinoidea: temnopleuridae) in the sw atlantic coast (argentina)
publishDate	2004
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00785326_v58_n2_p91_Penchaszadeh http://hdl.handle.net/20.500.12110/paper_00785326_v58_n2_p91_Penchaszadeh
_version_	1768544125323313152

Feeding of Pseudechinus magellanicus (Philippi, 1857) (Echinoidea: Temnopleuridae) in the SW Atlantic Coast (Argentina)

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