Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).

Detalhes bibliográficos
Autor(a) principal: Wosiacki, Wolmar Benjamin
Data de Publicação: 2008
Outros Autores: Pinna, Mário de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional do MPEG
Texto Completo: http://repositorio.museu-goeldi.br/handle/mgoeldi/178
Resumo: A new species of Trichomycterus is described for the rio Iguaçu drainage in Southern Brazil. Trichomycterus igobi, new species, is readily distinguishable from all other species currently in the genus by its extremely large head (23.8-26.8 % SL), which is proportionally the largest head in any Trichomycteridae. That characteristic plus the relatively deep body result in a very short-bodied overall aspect, the most extremely such case in the genus Trichomycterus. Other diagnostic features that distinguish the new species from most or all of its congeners include a short caudal peduncle (15.4-19.7 % SL); an almost entirely cartilaginous second hypobranchial (with only vestigial ossification); a mesial expanded palatine ossification; a narrow cleithrum, falciform in shape; and the lack of a proximal posterior concavity on the third ceratobranchial. The new species seems to form a monophyletic group with T. stawiarski and other undescribed species (T. sp. C), also endemic to the rio Iguaçu. As putative synapomorphies, the three species share a rigid spine-like morphology of individual procurrent caudalfin rays, an extended area of dorsal caudal-fin procurrent rays, and numerous branchiostegal rays (ten or eleven).
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spelling 2010-10-17T01:15:32Z2010-10-17T01:15:32Z2008WOSIACKI, Wolmar Benjamin; PINNA, Mário. Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae). Neotropical Ichthyology, v. 6, n. 1, p.17-23, 2008.1679-6225http://repositorio.museu-goeldi.br/handle/mgoeldi/178A new species of Trichomycterus is described for the rio Iguaçu drainage in Southern Brazil. Trichomycterus igobi, new species, is readily distinguishable from all other species currently in the genus by its extremely large head (23.8-26.8 % SL), which is proportionally the largest head in any Trichomycteridae. That characteristic plus the relatively deep body result in a very short-bodied overall aspect, the most extremely such case in the genus Trichomycterus. Other diagnostic features that distinguish the new species from most or all of its congeners include a short caudal peduncle (15.4-19.7 % SL); an almost entirely cartilaginous second hypobranchial (with only vestigial ossification); a mesial expanded palatine ossification; a narrow cleithrum, falciform in shape; and the lack of a proximal posterior concavity on the third ceratobranchial. The new species seems to form a monophyletic group with T. stawiarski and other undescribed species (T. sp. C), also endemic to the rio Iguaçu. As putative synapomorphies, the three species share a rigid spine-like morphology of individual procurrent caudalfin rays, an extended area of dorsal caudal-fin procurrent rays, and numerous branchiostegal rays (ten or eleven).Sociedade Brasileira de IctiologiaSystematicsTaxonomyFishesTrichomycterinaeParaná - BrasilSistemática animalTaxonomia animalTrichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleWosiacki, Wolmar BenjaminPinna, Mário deengreponame:Repositório Institucional do MPEGinstname:Museu Paraense Emílio Goeldi (MPEG)instacron:MPEGinfo:eu-repo/semantics/openAccessTEXTNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdf.txtNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdf.txtExtracted texttext/plain32392https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/6/Neotropical%20Ichthyology%20v6%20n1%202008%20WOSIACKI.pdf.txt90c72446a4e930166d4ebba7fab3c111MD56THUMBNAILNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdf.jpgNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdf.jpgGenerated Thumbnailimage/jpeg1557https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/7/Neotropical%20Ichthyology%20v6%20n1%202008%20WOSIACKI.pdf.jpgaea21b40a9a5d393b0f0024b3fe56bd0MD57ORIGINALNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdfNeotropical Ichthyology v6 n1 2008 WOSIACKI.pdfapplication/pdf392895https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/1/Neotropical%20Ichthyology%20v6%20n1%202008%20WOSIACKI.pdfb61cbdd6d4dc964e40498ee599a932fdMD51CC-LICENSElicense_urllicense_urltext/plain46https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/2/license_url7b60860db7ee2e38c65f8e939773fbe2MD52license_textlicense_textapplication/octet-stream20515https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/3/license_text0b34ef87e5b97de3d3198dfa911ff22bMD53license_rdflicense_rdfapplication/octet-stream18138https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/4/license_rdf0e4a63dca167ade042eeadf186f7bd73MD54LICENSElicense.txtlicense.txttext/plain1910https://repositorio.museu-goeldi.br/bitstream/mgoeldi/178/5/license.txt51be059dc0f31caa16e0c48198fb2fb9MD55mgoeldi/1782019-07-17 14:51:32.97oai:repositorio.museu-goeldi.br: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Repositório ComumONGhttp://repositorio.museu-goeldi.br/oai/requestopendoar:2019-07-17T17:51:32Repositório Institucional do MPEG - 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dc.title.en.fl_str_mv Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
title Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
spellingShingle Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
Wosiacki, Wolmar Benjamin
Systematics
Taxonomy
Fishes
Trichomycterinae
Paraná - Brasil
Sistemática animal
Taxonomia animal
title_short Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
title_full Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
title_fullStr Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
title_full_unstemmed Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
title_sort Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae).
author Wosiacki, Wolmar Benjamin
author_facet Wosiacki, Wolmar Benjamin
Pinna, Mário de
author_role author
author2 Pinna, Mário de
author2_role author
dc.contributor.author.fl_str_mv Wosiacki, Wolmar Benjamin
Pinna, Mário de
dc.subject.eng.fl_str_mv Systematics
Taxonomy
Fishes
Trichomycterinae
Paraná - Brasil
Sistemática animal
Taxonomia animal
topic Systematics
Taxonomy
Fishes
Trichomycterinae
Paraná - Brasil
Sistemática animal
Taxonomia animal
description A new species of Trichomycterus is described for the rio Iguaçu drainage in Southern Brazil. Trichomycterus igobi, new species, is readily distinguishable from all other species currently in the genus by its extremely large head (23.8-26.8 % SL), which is proportionally the largest head in any Trichomycteridae. That characteristic plus the relatively deep body result in a very short-bodied overall aspect, the most extremely such case in the genus Trichomycterus. Other diagnostic features that distinguish the new species from most or all of its congeners include a short caudal peduncle (15.4-19.7 % SL); an almost entirely cartilaginous second hypobranchial (with only vestigial ossification); a mesial expanded palatine ossification; a narrow cleithrum, falciform in shape; and the lack of a proximal posterior concavity on the third ceratobranchial. The new species seems to form a monophyletic group with T. stawiarski and other undescribed species (T. sp. C), also endemic to the rio Iguaçu. As putative synapomorphies, the three species share a rigid spine-like morphology of individual procurrent caudalfin rays, an extended area of dorsal caudal-fin procurrent rays, and numerous branchiostegal rays (ten or eleven).
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2010-10-17T01:15:32Z
dc.date.available.fl_str_mv 2010-10-17T01:15:32Z
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dc.identifier.citation.fl_str_mv WOSIACKI, Wolmar Benjamin; PINNA, Mário. Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae). Neotropical Ichthyology, v. 6, n. 1, p.17-23, 2008.
dc.identifier.uri.fl_str_mv http://repositorio.museu-goeldi.br/handle/mgoeldi/178
dc.identifier.issn.none.fl_str_mv 1679-6225
identifier_str_mv WOSIACKI, Wolmar Benjamin; PINNA, Mário. Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae). Neotropical Ichthyology, v. 6, n. 1, p.17-23, 2008.
1679-6225
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