Trichomycterus uisae: a new species of hypogean catfish (Siluriformes: Trichomycteridae) from the northeastern Andean Cordillera of Colombia

Castellanos-Morales, Cesar A.

doi:10.1590/s1679-62252008000300003

Cited by 17 publications

(24 citation statements)

References 8 publications

(5 reference statements)

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“…However this slit still extends to the epiphyseal bar, between the frontal bones, as in the plesiomorphic condition. 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.…”

Section: Discussionmentioning

confidence: 99%

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

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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.

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Section: Discussionmentioning

confidence: 99%

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

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“…2008a,b;Castellanos-Morales, 2008). Only Arratia et al (1978) and Lima et al (2008) have described a remarkable intraspecific variation of body pigmentation for Silvinichthys mendozensis and Trichomycterus caipora, although Bockmann & Sazima (2004) considered intraspecific variation of body pigmentation in S. mendozensis a highly unusual condition within Trichomycteridae and considered the body coloration pattern highly conserved in known species based on inspections of ontogenetic series of several Trichomycterus species (see material comparative examined by Bockmann & Sazima, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Approximately 33 species of Trichomycterus have been described for the upper rio Paraná, upper rio São Francisco, and coastal drainages of southeastern Brazil, which also contain many undescribed species (Costa, 1992;Alencar & Costa, 2004). The color pattern is recognized as a very distinctive and important characteristic for diagnosing Trichomycterus species (Alencar & Costa, 2004, 2006Lima & Costa, 2004;Wosiacki, 2004Wosiacki, , 2005Wosiaki & de Pinna, 2008b;Castellanos-Morales, 2008) and also for establishing relationship among species (Barbosa & Costa, 2003;Bockmann & Sazima, 2004;Alencar & Costa, 2006;Wosiack & de Pinna, 2008a). In spite of this, Arratia et al (1978) Wosiacki (2005) based only on the type-series.…”

Section: Introductionmentioning

confidence: 99%

Color pattern variation in Trichomycterus iheringi (Eigenmann, 1917) (Siluriformes: Trichomycteridae) from rio Itatinga and rio Claro, São Paulo, Brazil

et al. 2010

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Color pattern is recognized as an important characteristic for diagnosing Trichomycterus species and for elucidating their relationships. An analysis based on morphological and molecular data confirms the existence of a single species of Trichomycterus in the rio Itatinga, a costal river drainage on the escarpment of the Serra do Mar and the rio Claro on the upper course of the rio Tietê. The only species found, Trichomycterus iheringi, shows two clearly distinct patterns of body pigmentation and intermediate color patterns related to body size and microhabitat preference.O padrão de coloração é reconhecido como uma característica importante para a diagnose das espécies do gênero Trichomycterus e no reconhecimento de suas relações de parentesco. A análise baseada em dados morfológicos e moleculares confirma a existência de uma única espécie de Trichomycterus no rio Itatinga, drenagem litorânea da Serra do Mar e no rio Claro, curso superior do rio Tietê. A única espécie do gênero encontrada, Trichomycterus iheringi, apresenta dois padrões de pigmentação do corpo bastante distintos e padrões de coloração intermediários relacionados ao tamanho corporal e ao micro-habitat.

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“…Most species of fishes restricted to subterranean habitats are siluriforms, with about 50 species in the Americas, mainly concentrated in the Neotropical region (Trajano, 2003;Bichuette & Trajano, 2005, 2008Fernandez et al, 2007;Shibatta et al, 2007). The prevalence of siluriforms in the troglobitic habitats, including caves, is likely explained by their morphological/ biological "preadaptations", viz.…”

Section: Introductionmentioning

confidence: 99%

The blind catfish from the caves of Chapada Diamantina, Bahia, Brazil (Siluriformes: Heptapteridae): description, anatomy, phylogenetic relationships, natural history, and biogeography

Bockmann

Castro

2010

Neotrop. ichthyol.

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Rhamdiopsis krugi, a new troglobitic heptapterid catfish, is described from the caves of Chapada Diamantina, State of Bahia, northeastern Brazil. This species, although frequently cited in the scientific literature along the last seventeen years, remained undescribed largely due to its uncertain phylogenetic affinities. The generic assignment of R. krugi was clouded largely by its high number of unusual morphological features (some related to cave life), for instance: absence of eyes and body pigmentation; presence of a widely exposed pseudotympanum; posterior border of the anterior branch and anterior margin of the arborescent portion of the posterior branch of the transverse process of fourth vertebra joined; dorsal hypural plate commonly with seven rays; ventral caudal plate usually with six rays; dorsal and ventral caudal-fin lobes typically with six branched fin rays each; 38-39 vertebrae; anal fin with 14-17 rays; and lateral line very short. Rhamdiopsis krugi can be easily distinguished from its congeners, R. microcephala and R. moreirai, by its troglomorphic features and by the presence of a shorter lateral line, fewer vertebrae and anal-fin rays, pattern of branching of caudal-fin rays, and several attributes of skeletal system. The affinities of this new species are discussed in light of current phylogenetic knowledge of the family Heptapteridae. Incongruent derived characters do not allow selection of a particular hypothesis of sister group relationships among species of Rhamdiopsis. The occurrence of R. krugi in the rio Paraguaçu basin is possibly due to an event of hydrological capture from a section of the middle portion of the rio São Francisco basin, caused by tectonic events. The semi-arid region where R. krugi presently lives was probably covered by a wide forested area during a humid cycle in Quaternary. A summary of natural history and ecology data of R. krugi, as well as notes on its conservation, are provided. We also offer comments on the morphological plasticity of R. krugi.Rhamdiopsis krugi, um novo bagre heptapterídeo troglóbio, é descrito de cavernas da Chapada Diamantina, Estado da Bahia, nordeste do Brasil. Esta espécie, embora frequentemente citada na literatura ao longo dos últimos dezessete anos, não foi descrita antes em função das suas afinidades filogenéticas incertas. A posição genérica de R. krugi foi obscurecida principalmente pelo seu alto número de caracteres morfológicos incomuns (parte deles relacionada à vida nas cavernas), como por exemplo: ausência de olhos e de pigmentação corporal; presença de um pseudotímpano amplamente exposto; borda posterior do ramo anterior e margem anterior da porção arborescente do ramo posterior do processo transverso da quarta vértebra conectados um ao outro; placa hipural dorsal normalmente com sete raios; placa caudal ventral usualmente com seis raios; lobos dorsal e ventral da nadadeira caudal tipicamente com seis raios ramificados cada; 38-39 vértebras; nadadeira anal com 14-17 raios; e linha lateral muito curta. Rhamdiopsis krugi pode ...

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Trichomycterus uisae: a new species of hypogean catfish (Siluriformes: Trichomycteridae) from the northeastern Andean Cordillera of Colombia

Cited by 17 publications

References 8 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

Color pattern variation in Trichomycterus iheringi (Eigenmann, 1917) (Siluriformes: Trichomycteridae) from rio Itatinga and rio Claro, São Paulo, Brazil

The blind catfish from the caves of Chapada Diamantina, Bahia, Brazil (Siluriformes: Heptapteridae): description, anatomy, phylogenetic relationships, natural history, and biogeography

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