| Registro completo |
| Provedor de dados: |
Neotropical Ichthyology
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| País: |
Brazil
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| Título: |
Re-validation of Otocinclus arnoldi Regan and reappraisal of Otocinclus phylogeny (Siluriformes: Loricariidae)
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| Autores: |
Lehmann A,Pablo
Mayer,Fernanda
Reis,Roberto E
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| Data: |
2010-03-01
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| Ano: |
2010
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| Palavras-chave: |
La Plata
Synonymy
Hypoptopomatinae
Taxonomy
Catfish
Cascudinho
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| Resumo: |
Otocinclus arnoldi from the La Plata basin is resurrected from the synonymy of O. flexilis described from the rio Jacuí drainage, based on three distinguishing features: the possession of five branched pectoral-fin rays, the larger number of enlarged odontodes on the tip of the parieto-supraoccipital posterior process, and having the prootic involved in the contact with the hyomandibular articular condyle. These species are also compared to O. mimulus, a third species described from the Paraná River basin, and the three species are rediagnosed. A reassessment of the phylogenetic relationships of all species of Otocinclus shows a well-supported clade composed of (O. xakriaba ((O. mimulus, O. arnoldi) (O. affinis, O. flexilis))) from the eastern-draining river basins of the Brazilian Shield as sister-group to a clade including all remaining Otocinclus species which are distributed on a wide lowland area of the Amazonas, Paraguay, and Orinoco basins.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100008
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| Editor: |
Sociedade Brasileira de Ictiologia
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| Relação: |
10.1590/S1679-62252010000100008
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| Formato: |
text/html
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| Fonte: |
Neotropical Ichthyology v.8 n.1 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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