Trichomycterus pauciradiatus, a new catfish species from the upper rio Paraná basin, southeastern Brazil (Siluriformes: Trichomycteridae)

Alencar, Aline; Costa, Wilson J. E. M.

doi:10.11646/zootaxa.1269.1.3

Cited by 14 publications

(10 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One of these main subclades includes species from South and Southeastern Brazil and is subdivided into multiple lineages that are partially congruent with species groups proposed by morphology. Thus, the clade including T. pauciradiatus, T. piratymbara, T. reinhardti, and T. septemradiatus, was originally proposed as containing T. reinhardti and T. pauciradiatus and defined by the shared color pattern consisting of a broad dark brown stripe along the lateral midline, bordered above by a light yellow longitudinal zone 80 . Composition of this clade was later expanded to include T. piratymbara and T. septemradiatus 31 .…”

Section: Discussionmentioning

confidence: 99%

Phylogenomic analysis of trichomycterid catfishes (Teleostei: Siluriformes) inferred from ultraconserved elements

Ochoa

Datovo

DoNascimiento

et al. 2020

Sci Rep

View full text Add to dashboard Cite

The family Trichomycteridae is one of the most diverse groups of freshwater catfishes in South and Central America with eight subfamilies, 41 genera and more than 300 valid species. Its members are widely distributed throughout South America, reaching Costa Rica in Central America and are recognized by extraordinary anatomical specializations and trophic diversity. In order to assess the phylogenetic relationships of Trichomycteridae, we collected sequence data from ultraconserved elements (UCEs) of the genome from 141 specimens of Trichomycteridae and 12 outgroup species. We used a concatenated matrix to assess the phylogenetic relationships by Bayesian inference (BI) and maximum likelihood (ML) searches and a coalescent analysis of species trees. The results show a highly resolved phylogeny with broad agreement among the three distinct analyses, providing overwhelming support for the monophyletic status of subfamily Trichomycterinae including Ituglanis and Scleronema. Previous relationship hypotheses among subfamilies are strongly corroborated, such as the sister relationship between Copionodontinae and Trichogeninae forming a sister clade to the remaining trichomycterids and the intrafamilial clade TSVSG (Tridentinae-Stegophilinae-Vandelliinae-Sarcoglanidinae-Glanapteryginae). Monophyly of Glanapteryginae and Sarcoglanidinae was not supported and the enigmatic Potamoglanis is placed outside tridentinae. Unraveling the relationships of major sections of the Tree of Life is one of the most daunting challenges of the evolutionary biology. Massively parallel DNA sequencing (so-called Next-gen sequencing) is a promising tool that is helping to resolve the interrelationships of longstanding problematic taxa 1-4. One of the most common classes of phylogenomic methods involves the sequence capture of nuclear regions in the flanks and cores of the ultraconserved elements (UCEs) 2. The more variable flanking UCE regions allow a better resolution of nodes across a broad range of evolutionary timescales in a given phylogeny 2. As variation in the flanks increases with distance from the core UCE, this combined approach displays a balance between having a high enough substitution rate while minimizing saturation, thus providing information for estimating phylogenies at multiple evolutionary timescales 2,3. Recent studies of actinopterygians 5 , flatfishes 6 , cichlids 7 , ostariophysan 8 , acanthomorphs 9 , Loricariidae 10 , knifefishes 11 , among other vertebrates groups 3,12 , have shown that UCEs are excellent markers for phylogenetic studies because of their ubiquity among taxonomic groups 13 , low degrees of paralogy 14 , and low saturation 3. According to Gilbert et al. 15 , the phylogenetic informativeness of the combined flank and core regions of UCEs outperfoms protein-coding genes used in multilocus studies. Additionally, phylogenomic approaches are characterized by their potential to collect data from at least one order of magnitude more loci than the traditional sequencing techniques applied to protein-coding le...

show abstract

Section: Discussionmentioning

confidence: 99%

Phylogenomic analysis of trichomycterid catfishes (Teleostei: Siluriformes) inferred from ultraconserved elements

Ochoa

Datovo

DoNascimiento

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…However, this group has been the subject of constant redefinitions (Barbosa & Costa, ; Bockmann & Sazima, ) that have deeply altered its taxonomic composition each time, thus raising concerns about its actual monophyletic nature (Ferrer & Malabarba, ). Other efforts recognizing subgroups of species within Trichomycterus followed (Bizerril, ; Fernández & Vari, ; Bockmann et al ., ; Wosiacki & Garavello, ; Wosiacki, ; Alencar & Costa, ; Fernández & Osinaga, ; Fernández & Miranda, ; Lima et al ., ; Wosiacki & de Pinna, , ; Barbosa & Costa, for T. itatiayae species complex; Barbosa & Costa, for T. travassosi species complex, 2012b; Datovo et al ., ; Fernández & Vari, ; Katz et al ., ; Katz & Barbosa, ; Terán et al ., for T. stawiarski group). Further complicating the recognition of putative monophyletic groups within Trichomycterus , several authors have discussed the morphological evidence suggesting closer phylogenetic relationships of some Trichomycterus species with other trichomycterine genera (DoNascimiento et al ., ; Fernández & Quispe Chuquihuamaní, ; Fernández & Schaefer, ; Mesa et al ., ), and even with other trichomycterid subfamilies (de Pinna, ).…”

Section: Discussionmentioning

confidence: 99%

“…Trichomycterus followed (Bizerril, 1994;Fernández & Vari, 2002;Wosiacki & Garavello, 2004;Wosiacki, 2005;Alencar & Costa, 2006;Fernández & Osinaga, 2006;Fernández & Miranda, 2007;Lima et al, 2008;Wosiacki & de Pinna, 2008a, 2008b Fernández & Schaefer, 2003;Mesa et al, 2018), and even with other trichomycterid subfamilies (de Pinna, 1989).…”

Section: Fishmentioning

confidence: 99%

A new troglomorphic species of Trichomycterus (Siluriformes: Trichomycteridae) from north‐eastern Colombia, with proposal of a new Trichomycterus subclade and remarks on some nominal species from Colombia

DoNascimiento

Prada-Pedreros

2020

Journal of Fish Biology

View full text Add to dashboard Cite

Trichomycterus spectrum is described as a new species from the Alejo cave, drained by the Ranchería River basin, in La Guajira department, north‐eastern Colombia, and is the first troglomorphic species described from this region. The new species shows an advanced degree of troglomorphisms expressed as eyes absent, long barbels and body depigmented. Trichomycterus spectrum is diagnosed by the putatively autapomorphic presence of a posterior process at the anterolateral corner of the epioccipital, and is also recognized by the derived presence of a circular foramen on the neural spine of the complex vertebra and the following posterior vertebra, and by the apomorphic presence of a well‐developed coracoid bridge, distally expanded, and contacting or almost reaching the lateral margin of the cleithrum. The new species also shows the derived origin of the levator internus 4 on the dorsal surface of the posttemporo‐supracleithrum that supports Trichomycterinae monophyly. We also propose a monophyletic subgroup provisionally within Trichomycterus, here named the Trichomycterus taenia species group, which includes species distributed in cis‐ and trans‐Andean drainages in northern South America. The taxonomic status of several recently described nominal species from Colombia is discussed, with several synonymy proposals. Resumen Trichomycterus spectrum es descrito como una especie nueva de la cueva de Alejo, drenada por la cuenca del río Ranchería, en el departamento de La Guajira, noreste de Colombia, y es la primera especie troglomórfica descrita para esta región. La especie nueva exhibe un grado avanzado de troglomorfismos expresado como ojos ausentes, barbillas largas y cuerpo depigmentado. Trichomycterus spectrum es diagnósticado por la presencia putativamente autapomórfica de un proceso posterior en la esquina anterolateral del epióticoy es reconocido también por la presencia derivada de un foramen circular en la espina neural de la vértebra compleja y de la vértebra posterior siguiente, y por la presencia apomórfica de un puente coracoideo bien desarrollado, expandido distalmente y contactando o muy próximo al margen lateral del cleitro. La especie nueva también posee el origen derivado del levator internus 4 sobre la superficie dorsal del posttemporo‐supracleitro que soporta la monofilia de Trichomycterinae. También proponemos un subgrupo monofilético provisionalmente dentro de Trichomycterus, denominado aquí como el grupo de especies Trichomycterus taenia, el cual incluye especies distribuidas en cuencas cis y transandinas en el norte de Sudamérica. El estatus taxonómico de varias especies nominales recientemente descritas de Colombia es discutido, con varias propuestas de sinonimia.

show abstract

“…Colour patterns prove to be an efficient characteristic to distinguish many species in Trichomycterinae (Alencar & Costa, ; ; Bockmann et al ., ; Bockmann & Sazima, ; Castellanos‐Morales, ; Lima & Costa, ; Wosiacki, ; ; Wosiacki & de Pinna, ; ), but it is highly variable for some species, as with C. davisi (Nascimento et al ., ) and for C. iheringi (da Silva et al ., ). An important morphological characteristic in the distinction of C. horacioi refers to the colouration pattern formed by circular scattered dark blotches slightly variable in size in the inner skin layer and small black spots on outer skin layer.…”

Section: Discussionmentioning

confidence: 99%

A new species of Cambeva (Siluriformes, Trichomycteridae) from the Rio Ivaí basin, Upper Rio Paraná basin, Paraná State, Brazil

Reis

Frota

Fabrin

et al. 2019

Journal of Fish Biology

View full text Add to dashboard Cite

A new species of Cambeva endemic to the Rio Ivaí basin, Upper Paraná basin, is described combining morphological and molecular data. This new species is distinguished from all congeners by characters related to the number of pectoral-fin rays, to the colour pattern of the dorsal and lateral surface of the body, to the presence of diffuse blotches in the ventral surface of body, to the presence of a pelvic-fin and pelvic girdle, to the number of odontodes in the inter-opercular and opercular patches, to the number of dorsal and ventral procurrent rays. In addition, the analysis of mitochondrial DNA sequences identified a satisfactory genetic distance between this new species and its congeners. The new species from the Rio Ivaí reinforces its characteristics as an area of endemism for fishes in the Upper Rio Paraná basin.

show abstract

Trichomycterus pauciradiatus, a new catfish species from the upper rio Paraná basin, southeastern Brazil (Siluriformes: Trichomycteridae)

Cited by 14 publications

References 4 publications

Phylogenomic analysis of trichomycterid catfishes (Teleostei: Siluriformes) inferred from ultraconserved elements

Phylogenomic analysis of trichomycterid catfishes (Teleostei: Siluriformes) inferred from ultraconserved elements

A new troglomorphic species of Trichomycterus (Siluriformes: Trichomycteridae) from north‐eastern Colombia, with proposal of a new Trichomycterus subclade and remarks on some nominal species from Colombia

A new species of Cambeva (Siluriformes, Trichomycteridae) from the Rio Ivaí basin, Upper Rio Paraná basin, Paraná State, Brazil

Contact Info

Product

Resources

About