Taxonomic review of the genus Trichomycterus Valenciennes (Siluriformes: Trichomycteridae) from the laguna dos Patos system, Southern Brazil

Ferrer, Juliano; Malabarba, Luiz Roberto

doi:10.1590/s1679-62252013000200001

Cited by 44 publications

(52 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Trichomycterus sketi has the posterior fontanel divided into two widely separated openings, located just after the epiphyseal bar and on the center of the parieto-supraoccipital, respectively, but yet connected by a mid-sagittal suture (Castellanos-Morales, 2011). On the other hand, T. brachykechenos was directly compared to T. megantoni, as having the same configuration of the fontanel (Ferrer & Malabarba, 2013), though the illustration offered (Ferrer & Malabarba, 2013: 220, fig. 2d), presents an elongated posterior fontanel entirely located on the parieto-supraoccipital, identical to the condition found in T. steindachneri (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Under this new concept of Trichomycterinae, phylogenetic position of Ituglanis remains unresolved, so a putative clade comprising Ituglanis, Trichomycterus brachykechenos, T. cachiraensis, and T. steindachneri, supported by the shared presence of a reduced posterior fontanel is a tenable working hypothesis. A possible relationship of Trichomycterus brachykechenos with Ituglanis was already advanced by Ferrer & Malabarba (2013), based on the shared presence of reduction pattern of posterior fontanel, and anterior portion of sphenotic anteriorly directed. In fact, T. brachykechenos also shows a slightly concave medial margin of its autopalatine (Ferrer & Malabarba 2013: 239, fig.…”

Section: Discussionmentioning

confidence: 99%

“…Abbreviations: HL, head length; PU, preural vertebral centrum; SL, standard length; U, ural vertebral centrum. Institutional abbreviations follow Leviton et al (1985), with the addition of CZUT-IC, Colección Zoológica Universidad del Tolima, Ictiología, Ibagué, Colombia; IAvH-P, Colección Ferrer & Malabarba, 2013 by having a small posterior cranial fontanel (Fig. 2a), restricted to the parieto-supraoccipital (vs. a long somewhat rectangular fontanel extending anteriorly between frontal bones and posteriorly into anteromedian region of parietosupraoccipital).…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

A new catfish species of the genus Trichomycterus (Siluriformes: Trichomycteridae) from the río Orinoco versant of Páramo de Cruz Verde, Eastern Cordillera of Colombia

2015

View full text Add to dashboard Cite

A new Trichomycterus is described from a highland tributary of the río Meta (Orinoco basin), along the east flank of Páramo de Cruz Verde, Eastern Cordillera of Colombia. The new species is distinguished from most of its congeners by having a reduced posterior cranial fontanel, restricted to the parieto-supraoccipital, cleithrum pierced by several foramina, and an unique combination of four irregular rows of conic teeth in premaxilla and dentary, 13-14 opercular odontodes, 41-43 interopercular odontodes, 6-7 branchiostegal rays, 40 or 41 free vertebrae, 14-18 ribs, first ray of pectoral fin slightly projected as a short filament, 7-8 branched pectoral-fin rays, dorsal-fin origin at same level of pelvic-fin insertion, anal-fin origin posterior to dorsal-fin base, caudal-fin margin slightly rounded, a single upper hypural plate (3+4+5), and coloration pattern consisting in ground color dark brown with a thin mid-lateral dark stripe. Phylogenetic relationships of the new species based on the shared presence of derived features related to posterior cranial fontanel and cleithrum are discussed. The new species is also compared to the only two described species from Andean tributaries of río Orinoco basin.É descrita uma espécie nova de Trichomycterus de um pequeno tributário dos Andes da bacia do río Meta (bacia do río Orinoco), no flanco oriental do Páramo de Cruz Verde na Cordilhera Oriental da Colômbia. A espécie nova distingue-se da maioria de seus congêneres por apresentar uma fontanela craniana posterior reduzida, restrita ao parieto-supraoccipital, cleitro perfurado por vários forames e uma combinação única de quatro fileiras irregulares de dentes cónicos no pré-maxilar e no dentário, 13-14 odontódeos operculares, 41-43 odontódeos interoperculares, 6-7 raios branquiostégios, 40 ou 41 vértebras livres, 14-18 costelas, o primeiro raio da nadadeira peitoral ligeiramente projetado em um curto filamento, 7-8 raios ramificados na nadadeira peitoral, origem da nadadeira dorsal no mesmo nível de inserção das nadadeiras pélvicas, origem da nadadeira anal posterior à base da nadadeira dorsal, margem da nadadeira caudal ligeiramente arredondada, uma única placa hipural superior (3+4+5) e padrão de coloração em um fundo de cor marrom escuro com uma fina listra escura média lateral. As relações filogenéticas da espécie nova com base na presença compartilhada de caracteres derivados relacionados com a fontanela craniana posterior e o cleitro são discutidas. A espécie nova também é comparada com as duas únicas espécies descritas de afluentes dos Andes da bacia do río Orinoco.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A new catfish species of the genus Trichomycterus (Siluriformes: Trichomycteridae) from the río Orinoco versant of Páramo de Cruz Verde, Eastern Cordillera of Colombia

2015

View full text Add to dashboard Cite

show abstract

“…3). Ontogenetic color variation is already known in some Siluriformes (Ferrer & Malabarba, 2013) and Loricariidae species (Zawadzki & Carvalho, 2014). Besides the color pattern, a few morphological variation could also be observed across the size range in P. spilurus specimens.…”

Section: Discussionmentioning

confidence: 82%

Redescription of the endangered hypoptopomatine catfish Parotocinclus spilurus (Fowler, 1941) (Siluriformes: Loricariidae) from the upper rio Jaguaribe basin, northeastern Brazil

et al. 2016

View full text Add to dashboard Cite

Parotocinclus spilurus (Fowler) was originally described as a species of Plecostomus based on six specimens collected in the rio Salgado, Icó Municipality, Ceará State, northeastern Brazil. Because the original description of P. spilurus is brief and uninformative, a detailed redescription of this endangered species based on the type series and on freshly collected topotypes was made. Data on osteology, intraspecific variation, sexual dimorphism and color pattern in life are presented for the first time, aiming at providing the necessary characters to differentiate the species from its congeners, as well as providing data on the distribution, habitat and conservation.Parotocinclus spilurus (Fowler) foi descrita originalmente como uma espécie do gênero Plecostomus com base em seis espécimes coletados no rio Salgado, Município de Icó, Estado do Ceará. Devido à descrição original de P. spilurus ser breve e pouco informativa, uma redescrição detalhada desta espécie ameaçada com base na série tipo e em topótipos recentemente coletados foi feita. Dados de osteologia, variação ontogenética, dimorfismo sexual e padrão de coloração em vida são apresentados pela primeira vez, com o objetivo de fornecer caracteres necessários para distinguir a espécie das suas demais congêneres, assim como fornecer dados de distribuição, habitat e conservação.

show abstract

“…The upper rio Taquari-Antas basin is recognized as an area of endemism for hosting a large number of endemic taxa (Carvalho & Reis, 2011;Becker et al, 2013;Ferrer & Malabarba, 2013;Lucena et al, 2013aLucena et al, , 2013b. According to Becker et al (2013), species with restricted ranges are potentially more susceptible to environmental impacts and extinction, and they should be considered as targets for assessments in conservation planning and environmental licensing.…”

Section: Discussionmentioning

confidence: 99%

A new species of Astyanax Baird & Girard (Ostariophysi: Characidae) from the rio Taquari-Antas basin, southern Brazil

2015

View full text Add to dashboard Cite

A new Astyanax is described from the rio Taquari-Antas basin, rio Jacuí drainage, laguna dos Patos system, Rio Grande do Sul State, Brazil. The new species is distinguished from its congeners inhabiting the rio Uruguay, laguna dos Patos and rio Tramandaí basins by the presence of two vertically elongated humeral spots, the anterior humeral spot with the upper portion wider than the lower portion and slightly directed forward, 37-39 perforated scales along the lateral line, 14 scale rows around caudal peduncle, 2-4 maxillary tricuspid teeth, 24-28 branched anal-fin rays, bony hooks on all fins of mature males, and conspicuous caudal peduncle spot. Furthermore, the new species differs from its congeners by body depth (37.9-45.9% of standard length), preanal distance (62.4-69.1% of SL), anal-fin base length (29.7-35.6% of SL), and orbital diameter (29.5-38.2% of head length).Uma nova espécie de Astyanax é descrita da bacia do rio Taquari-Antas, drenagem do rio Jacuí, sistema da laguna dos Patos, Rio Grande do Sul, Brasil. A espécie nova distingui-se das suas congêneres que habitam as bacias do rio Uruguai, laguna dos Patos e rio Tramandaí pela presença de duas manchas umerais verticalmente alongadas, a mancha anterior com a porção superior mais larga que a porção inferior e levemente direcionada a frente, 37-39 escamas perfuradas na linha lateral, 14 séries de escamas ao redor do pedúnculo caudal, 2-4 dentes tricuspidados no maxilar, 24-28 raios ramificados na nadadeira anal, ganchos ósseos em todas as nadadeiras dos machos maduros e mancha no pedúnculo caudal conspícua. Além disso, a espécie nova difere de suas congêneres pela altura do corpo (37,9-45,9% do comprimento padrão), distânciapré-anal (62,4-69,1% do CP), comprimento da base da nadadeira anal (29,7-35,6% do CP) e diâmetro orbital (29,5-38,2% do comprimento da cabeça).

show abstract

Taxonomic review of the genus Trichomycterus Valenciennes (Siluriformes: Trichomycteridae) from the laguna dos Patos system, Southern Brazil

Cited by 44 publications

References 24 publications

A new catfish species of the genus Trichomycterus (Siluriformes: Trichomycteridae) from the río Orinoco versant of Páramo de Cruz Verde, Eastern Cordillera of Colombia

A new catfish species of the genus Trichomycterus (Siluriformes: Trichomycteridae) from the río Orinoco versant of Páramo de Cruz Verde, Eastern Cordillera of Colombia

Redescription of the endangered hypoptopomatine catfish Parotocinclus spilurus (Fowler, 1941) (Siluriformes: Loricariidae) from the upper rio Jaguaribe basin, northeastern Brazil

A new species of Astyanax Baird & Girard (Ostariophysi: Characidae) from the rio Taquari-Antas basin, southern Brazil

Contact Info

Product

Resources

About