Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina

Autores
Brogger, Martín Ignacio; Martinez, Mariano Ignacio; Cadierno, María Pilar; Penchaszadeh, Pablo Enrique
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Ophioplocus januarii is a common brittle star on soft and hard substrates along the Argentinian and Brazilian coasts. Based on stomach contents, tooth microstructure and field observations we identified its food. Opposed to previous suggestions, O. januarii appears to be a microphagous species feeding on macroalgal fragments (found in 60.0 % of the analyzed stomachs with content), plant debris (28.0 %), animal cuticle structures (13.0 %), and unidentifiable material (30.7 %). Less frequent items found were foraminiferans, ostracods, an amphipod, a juvenile bivalve, and other crustaceans. Electronic microscope revealed digested material, diatoms and small crustacean appendices. Thus, O. januarii is an omnivorous species, feeding mainly on algae, complemented opportunistically with other items. Suspension feeding was observed in the field. It has an fenestrated arrangement intermediate between the previously described uniform and compound teeth.
Facultad de Ciencias Naturales y Museo
Instituto de Investigaciones Bioquímicas de La Plata
Consejo Nacional de Investigaciones Científicas y Técnicas
Materia
Ciencias Naturales
Brittle star
Microstructure
Stomach contents
Ophiolepididae
Stereom microstructure
Teeth
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/97724
Acceder
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network_name_str SEDICI (UNLP)
spelling Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, ArgentinaBrogger, Martín IgnacioMartinez, Mariano IgnacioCadierno, María PilarPenchaszadeh, Pablo EnriqueCiencias NaturalesBrittle starMicrostructureStomach contentsOphiolepididaeStereom microstructureTeethOphioplocus januarii is a common brittle star on soft and hard substrates along the Argentinian and Brazilian coasts. Based on stomach contents, tooth microstructure and field observations we identified its food. Opposed to previous suggestions, O. januarii appears to be a microphagous species feeding on macroalgal fragments (found in 60.0 % of the analyzed stomachs with content), plant debris (28.0 %), animal cuticle structures (13.0 %), and unidentifiable material (30.7 %). Less frequent items found were foraminiferans, ostracods, an amphipod, a juvenile bivalve, and other crustaceans. Electronic microscope revealed digested material, diatoms and small crustacean appendices. Thus, O. januarii is an omnivorous species, feeding mainly on algae, complemented opportunistically with other items. Suspension feeding was observed in the field. It has an fenestrated arrangement intermediate between the previously described uniform and compound teeth.Facultad de Ciencias Naturales y MuseoInstituto de Investigaciones Bioquímicas de La PlataConsejo Nacional de Investigaciones Científicas y Técnicas2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf353-360http://sedici.unlp.edu.ar/handle/10915/97724enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/37060info:eu-repo/semantics/altIdentifier/url/https://revistas.ucr.ac.cr/index.php/rbt/article/view/23169info:eu-repo/semantics/altIdentifier/issn/0034-7744info:eu-repo/semantics/altIdentifier/hdl/11336/37060info:eu-repo/semantics/altIdentifier/doi/10.15517/rbt.v63i2.23169info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:12:49Zoai:sedici.unlp.edu.ar:10915/97724Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:12:49.758SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
title Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
spellingShingle Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
Brogger, Martín Ignacio
Ciencias Naturales
Brittle star
Microstructure
Stomach contents
Ophiolepididae
Stereom microstructure
Teeth
title_short Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
title_full Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
title_fullStr Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
title_full_unstemmed Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
title_sort Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
dc.creator.none.fl_str_mv Brogger, Martín Ignacio
Martinez, Mariano Ignacio
Cadierno, María Pilar
Penchaszadeh, Pablo Enrique
author Brogger, Martín Ignacio
author_facet Brogger, Martín Ignacio
Martinez, Mariano Ignacio
Cadierno, María Pilar
Penchaszadeh, Pablo Enrique
author_role author
author2 Martinez, Mariano Ignacio
Cadierno, María Pilar
Penchaszadeh, Pablo Enrique
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Brittle star
Microstructure
Stomach contents
Ophiolepididae
Stereom microstructure
Teeth
topic Ciencias Naturales
Brittle star
Microstructure
Stomach contents
Ophiolepididae
Stereom microstructure
Teeth
dc.description.none.fl_txt_mv Ophioplocus januarii is a common brittle star on soft and hard substrates along the Argentinian and Brazilian coasts. Based on stomach contents, tooth microstructure and field observations we identified its food. Opposed to previous suggestions, O. januarii appears to be a microphagous species feeding on macroalgal fragments (found in 60.0 % of the analyzed stomachs with content), plant debris (28.0 %), animal cuticle structures (13.0 %), and unidentifiable material (30.7 %). Less frequent items found were foraminiferans, ostracods, an amphipod, a juvenile bivalve, and other crustaceans. Electronic microscope revealed digested material, diatoms and small crustacean appendices. Thus, O. januarii is an omnivorous species, feeding mainly on algae, complemented opportunistically with other items. Suspension feeding was observed in the field. It has an fenestrated arrangement intermediate between the previously described uniform and compound teeth.
Facultad de Ciencias Naturales y Museo
Instituto de Investigaciones Bioquímicas de La Plata
Consejo Nacional de Investigaciones Científicas y Técnicas
description Ophioplocus januarii is a common brittle star on soft and hard substrates along the Argentinian and Brazilian coasts. Based on stomach contents, tooth microstructure and field observations we identified its food. Opposed to previous suggestions, O. januarii appears to be a microphagous species feeding on macroalgal fragments (found in 60.0 % of the analyzed stomachs with content), plant debris (28.0 %), animal cuticle structures (13.0 %), and unidentifiable material (30.7 %). Less frequent items found were foraminiferans, ostracods, an amphipod, a juvenile bivalve, and other crustaceans. Electronic microscope revealed digested material, diatoms and small crustacean appendices. Thus, O. januarii is an omnivorous species, feeding mainly on algae, complemented opportunistically with other items. Suspension feeding was observed in the field. It has an fenestrated arrangement intermediate between the previously described uniform and compound teeth.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/97724
url http://sedici.unlp.edu.ar/handle/10915/97724
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/37060
info:eu-repo/semantics/altIdentifier/url/https://revistas.ucr.ac.cr/index.php/rbt/article/view/23169
info:eu-repo/semantics/altIdentifier/issn/0034-7744
info:eu-repo/semantics/altIdentifier/hdl/11336/37060
info:eu-repo/semantics/altIdentifier/doi/10.15517/rbt.v63i2.23169
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
353-360
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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