A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil

Ingenito, Leonardo F. S.; Duboc, Luiz Fernando

doi:10.1590/1982-0224-20130117

Cited by 864 publications

(9 citation statements)

References 28 publications

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“…5) (Ingenito and Duboc 2014) and are mainly found in headwater streams. Astyanax laticeps, in contrast, is the only species of the Astyanax scabripinnis complex that is widely distributed, occurring in the three main drainages of Rio Grande do Sul, besides the southern and southeastern coastal rivers of Brazil (Lucena and Bertaco 2010).…”

Section: Discussionmentioning

confidence: 99%

Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)

Lucena¹,

Zaluski²,

Lucena³

2017

Zoologia

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ABSTRACT. A new species of Astyanax belonging to the Astyanax scabripinnis complex is described from dos Touros River, tributary of the Pelotas River, Uruguay River basin. Astyanax taurorum sp. nov. is distinguished from other species of the Astyanax scabripinnis species complex by having two humeral spots, the first vertically elongated; teeth of inner row of premaxilla with three to five cusps; 2-3 (modes 2 or 3) maxillary teeth; 20-23 (mode 22) branched anal-fin rays; 13-15 (mode 14) gill rakers on lower branch of the first branchial arch; 20-23 (mode 21) total gill rakers in first branchial arch; 33-36 (mode 35) perforated lateral line scales. Astyanax taurorum sp. nov. is similar to Astyanax paris; nevertheless, it can be readily distinguished from it by having a smaller head depth (73.6-83.1% vs. 86.4-95.6%) and smaller interorbital width (24.1-28.0%vs. 30.8-32.8%). In addition, it differs from A. paris by the presence a posttemporal hook-shaped posterodorsal margin.

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Section: Discussionmentioning

confidence: 99%

Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)

Lucena¹,

Zaluski²,

Lucena³

2017

Zoologia

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“…A. elachylepis : NUP 9280 (three, 110·0–115·0 mm L S ). Astyanax eremus Ingenito & Duboc, : MCP 46942 (10 paratypes, 34·8–94·5 mm L S ). Astyanax aff.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, according to Rossini et al . () the three Astyanax species complexes [ Astyanax bimaculatus (L. 1758) sensu Garutti & Langeani, and Lucena & Soares, , Astyanax fasciatus (Cuvier 1819) sensu Melo, and Astyanax scabripinnis (Jenyns 1842) sensu Bertaco & Lucena, and Ingenito & Duboc, ] are probably polyphyletic.…”

Section: Introductionmentioning

confidence: 99%

“…A geographical subset of species of Astyanax occurring in Central America has been found to be a monophyletic group (including the genus Bramocharax) by authors working with both morphological (Schmitter-Soto, 2016) and molecular (Ornelas-García et al, 2008) data. On the other hand, according to Rossini et al (2016) the three Astyanax species complexes [Astyanax bimaculatus (L. 1758) sensu Garutti &Langeani, 2009 andSoares, 2016, Astyanax fasciatus (Cuvier 1819) sensu Melo, 2005 and Astyanax scabripinnis (Jenyns 1842) sensu Lucena, 2006 andIngenito &Duboc, 2014] are probably polyphyletic.…”

Section: Introductionmentioning

confidence: 99%

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A new species of Astyanax (Characiformes: Characidae) from Dolina Água Milagrosa, Rio Paraguai basin, Mato Grosso, Brazil

Graça

Oliveira

Lima

et al. 2017

Journal of Fish Biology

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A new species of Astyanax is described from the upper Rio Paraguai basin, Mato Grosso State, Brazil. The new species can be distinguished from congeners by having the body intensely yellowish in life (v. silvery, reddish or lightly yellow) and by morphometric and meristics traits. Astyanax dolinae n. sp. cannot be assigned to any of the Astyanax species complex currently recognized for the genus. It is only known from the Dolina Água Milagrosa, a karstic sinkhole lake, entirely fed by groundwater, surrounded by Cerrado, the savannah-like vegetation of central South America.

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“…Astyanax bagual is herein assigned to Astyanax according to the definition of the genus given by Eigenmann (1921Eigenmann ( , 1927, which is still often used (Lucena et al, 2013a(Lucena et al, , 2013bIngenito & Duboc, 2014). The new species shares two of three synapomorphies that define node 200 of Mirande (2010), which included the Astyanax clade and Astyanax paris clade as well as the Aphyocharacinae, Aphyoditeinae, Cheirodontinae, Gymnocharacinae, Stevardiinae, and Bryconamericus scleroparius clade: fourth infraorbital approximately square or more developed longitudinally than dorsoventrally, and coronomeckelian situated mainly dorsal to Meckel cartilage.…”

Section: Discussionmentioning

confidence: 99%

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

2015

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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).

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A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil

Cited by 864 publications

References 28 publications

Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)

Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)

A new species of Astyanax (Characiformes: Characidae) from Dolina Água Milagrosa, Rio Paraguai basin, Mato Grosso, Brazil

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

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