Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina
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 feedi...
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| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2015
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/97724 https://ri.conicet.gov.ar/11336/37060 https://revistas.ucr.ac.cr/index.php/rbt/article/view/23169 |
| Aporte de: |
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I19-R120-10915-97724 |
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dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Naturales Brittle star Microstructure Stomach contents Ophiolepididae Stereom microstructure Teeth |
| spellingShingle |
Ciencias Naturales Brittle star Microstructure Stomach contents Ophiolepididae Stereom microstructure Teeth Brogger, Martín Ignacio Martinez, Mariano Ignacio Cadierno, María Pilar Penchaszadeh, Pablo Enrique Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina |
| topic_facet |
Ciencias Naturales Brittle star Microstructure Stomach contents Ophiolepididae Stereom microstructure Teeth |
| 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. |
| format |
Articulo Articulo |
| author |
Brogger, Martín Ignacio Martinez, Mariano Ignacio Cadierno, María Pilar Penchaszadeh, Pablo Enrique |
| author_facet |
Brogger, Martín Ignacio Martinez, Mariano Ignacio Cadierno, María Pilar Penchaszadeh, Pablo Enrique |
| author_sort |
Brogger, Martín Ignacio |
| title |
Tooth microstructure and feeding biology of the brittle star <i>Ophioplocus januarii</i> (Echinodermata: Ophiuroidea) from northern Patagonia, Argentina |
| 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 |
| publishDate |
2015 |
| url |
http://sedici.unlp.edu.ar/handle/10915/97724 https://ri.conicet.gov.ar/11336/37060 https://revistas.ucr.ac.cr/index.php/rbt/article/view/23169 |
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