Position of enigmatic miniature trichomycterid catfishes inferred from molecular data (Siluriformes)

Henschel, Elisabeth; Mattos, José Leonardo O.; Katz, Axel M.; Costa, Wilson J. E. M.

doi:10.1111/zsc.12260

Cited by 22 publications

(39 citation statements)

References 32 publications

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“…The TSVSG‐clade in the sense of the present study (i.e. the TSVSGM‐clade excluding Microcambevinae) is also highly corroborated in the present and past molecular phylogenetic analyses (Fernandez & Schaefer, ; Henschel et al, ).…”

Section: Discussionsupporting

confidence: 86%

“…In order of to consistently follow our present classification proposal, we propose the TSVSGM-clade with the formal inclusion of Microcambevinae. The TSVSGM-clade, equivalent to the TSVSG-clade of previous studies, is strongly supported here and in previous molecular and morphological studies (Costa & Bockmann, 1994b;Datovo & Bockmann, 2010;Henschel et al, 2018;Katz et al, 2018;Ochoa et al, 2017). The TSVSG-clade in the sense of the present study (i.e.…”

Section: A Lateral Constriction On the Anterior Portion Of The Vomersupporting

confidence: 92%

“…Costa and Bockmann (), on the basis of apomorphic morphological character states, diagnosed a clade comprising the subfamilies Tridentinae, Stegophilinae, Vandelliinae, Sarcoglanidinae and Glanapteryginae (i.e. the TSVSG‐clade), which has been corroborated in all molecular analyses to the present (Fernandez & Schaefer, ; Henschel et al, ; Katz, Barbosa, Mattos, & Costa, ; Ochoa et al, ). However, monophyly of the Sarcoglanidinae and Glanapteryginae including both Amazon and Atlantic Forest taxa was never tested using DNA sequences.…”

Section: Introductionsupporting

confidence: 61%

“…pelagic swimmers (Sazima, 2004) and some inhabit roots of floating aquatic plants (Henschel, Mattos, Katz, & Costa, 2018). Uncommon trophic adaptations may occur in trichomycterids, including lepidophagy, muciphagy and necrophagy in different lineages of the Stegophilinae, as well as hematophagy in the popularly known parasitic candirus of the Vandelliinae (Baskin, Zaret, & Mago-Leccia, 1980;Bonato, Silva, & Malabarba, 2018;Eigenmann, 1918;Goulding, 1980;Machado & Sazima, 1983;Winemiller & Yan, 1989;Zuanon & Sazima, 2004a).…”

mentioning

confidence: 99%

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Multigene phylogeny reveals convergent evolution in small interstitial catfishes from the Amazon and Atlantic forests (Siluriformes: Trichomycteridae)

2020

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Interstitial trichomycterid catfishes of the Glanapteryginae and Sarcoglanidinae with uncommon morphology have been known for long time from taxa endemic to the Amazon. In most recent decades, two genera, Listrura and Microcambeva, respectively, placed in Glanapteryginae and Sarcoglanidinae on the basis of morphological characters, have been described from the Atlantic Forest of eastern South America, about 1,500 km from the area inhabited by those Amazon taxa. Herein, we first test the phylogenetic positioning of Listrura and Microcambeva using a multigene data set, including two nuclear and three mitochondrial genes for nine species of Listrura and Microcambeva and 11 species representing all closely related subfamilies (TSVSG‐clade), as well as five used as outgroups. The phylogenetic analyses generated a robust tree with high support values in all nodes, where monophyly of Glanapteryginae and Sarcoglanidinae is refuted. In contrast, Listrura and Microcambeva form a highly supported clade, herein formally described as a new subfamily, sister to a clade containing taxa representing the Glanapteryginae, Sarcoglanidinae, Stegophilinae, Tridentinae and Vandelliinae. This study also indicates that Microcambeva and Listrura exhibit divergent evolutionary trends in ecological and morphological attributes. Species of Microcambeva inhabit patches of loose sand and possess morphological traits that were convergently acquired by Amazon sand‐dwelling sarcoglanidines, including loss of body pigmentation and long maxilla. Species of Listrura live burrowed inside small stretches of dense leaf litter and have morphological traits that were convergently acquired by Amazon glanapterygines inhabiting leaf litter bottom rivers, including elongate body, with numerous vertebrae and loss or reduction of all fins.

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Section: Discussionsupporting

confidence: 86%

Section: A Lateral Constriction On the Anterior Portion Of The Vomersupporting

confidence: 92%

Section: Introductionsupporting

confidence: 61%

mentioning

confidence: 99%

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Multigene phylogeny reveals convergent evolution in small interstitial catfishes from the Amazon and Atlantic forests (Siluriformes: Trichomycteridae)

2020

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“…Morphological taxonomic studies could not find unique diagnostic characters for Trichomycterus (de Pinna 1989), whereas some species traditionally placed in Trichomycterus have been reallocated in other trichomycterine genera (e.g. Costa and Bockmann 1993, Arratia 1998, Henschel et al 2017. Furthermore, recent molecular analyses have suggested that species still today placed in Trichomycterus do not form a monophyletic group (Ochoa et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae)

Katz¹,

Barbosa²,

Mattos³

et al. 2018

ZSE

106

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Trichomycterus comprises about 170 valid species, but its monophyly has been challenged in the last decades. Bayesian Inference and Maximum Likelihood analyses comprehending mitochondrial genes COI and CYTB and nuclear genes GLYT, MYH6 and RAG2 from 71 Trichomycterinae terminal taxa and eight outgroups were performed. The analyses highly supports a clade containing Trichomycterusnigricans, the type species of the genus, and several other congeners endemic to eastern and northeastern Brazil, herein considered as the genus Trichomycterus, the sister clade the southern Brazil and adjacent areas clade; the latter clade comprises two subclades, one comprising species of the genus Scleronema and another comprising species previously placed in Trichomycterus, herein described as a new genus. Cambevagen. n. is distinguished from all other trichomycterines by the presence of a bony flap on the channel of the maxillo-dentary ligament, the interopercle shorter than the opercle, a deep constriction on the basal portion of the antero-dorsal arm of the quadrate, absence of teeth in the coronoid process of the dentary, the maxilla shorter than the premaxilla, the cranial fontanel extending from the the medial posterior of frontal to the medial region of supraoccipital, and absence of the postorbital process of the sphenotic-prootic-pterosphenoid.

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

Ochoa

Datovo

DoNascimiento

et al. 2020

Sci Rep

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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...

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Position of enigmatic miniature trichomycterid catfishes inferred from molecular data (Siluriformes)

Cited by 22 publications

References 32 publications

Multigene phylogeny reveals convergent evolution in small interstitial catfishes from the Amazon and Atlantic forests (Siluriformes: Trichomycteridae)

Multigene phylogeny reveals convergent evolution in small interstitial catfishes from the Amazon and Atlantic forests (Siluriformes: Trichomycteridae)

Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae)

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

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