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499 results for “Trichomycteridae”
FIGURE 8 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 8 | Scleronema ibirapuita, new species, holotype (MCN 19470; 39.5 mm SL), Brazil, Rio Grande do Sul, Santana do Livramento, "Área de Proteção Ambiental (APA) Ibirapuitã", rio Ibirapuitã Chico, rio Ibicuí drainage, lower rio Uruguay.
FIGURE 15 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 15 | Specimen just after the fixation in formalin of Scleronema milonga, new species, paratype (UFRGS 7685; 32.7 mm SL), Brazil, Rio Grande do Sul, São Nicolau, unnamed stream tributary to rio Ijuí, lower rio Uruguay.
FIGURE 19 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 19 | Scleronema minutum, paratype of Pygidium angustirostris (BMNH 1944.6.20.1; 34.5 mm SL), Uruguay, Paysandú, cañada de las Piedras Blancas, tributary to río Queguay, lower rio Uruguay. Photograph taken by Sandra Raredon.
FIGURE 14 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 14 | Scleronema milonga, new species, holotype (MCP 54165; 37.8 mm SL), Brazil, Rio Grande do Sul, Dezesseis de Novembro, arroio Lageado Araçá, rio Ijuí drainage, lower rio Uruguay.
FIGURE 3 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 3 | Dorsal view of the autopalatine (au) and maxilla (ma) of Scleronema minutum (ZVC-P 12491) showing the arch-shaped process on its dorsal surface (black arrow). Scale bar = 2 mm.
FIGURE 27 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 27 | Specimen in life out of the water of Scleronema teiniagua (ZVCP 13763), Uruguay, Artigas, arroyo Catalán Grande at Paso Santiño, río Cuareim basin lower río Uruguay. Photograph taken by Sebastián Serra.
FIGURE 11 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 11 | Specimens in life of Scleronema macanuda, new species, paratypes, (UFRGS 21635; A. 75.6 mm SL, B. 65.7 mm SL), Brazil, Rio Grande do Sul, Bagé, rio Piraí, tributary of rio Negro, lower rio Uruguay.
FIGURE 22 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 22 | Specimen in life of Scleronema operculatum (UFRGS 18086; 42.3 mm SL), Brazil, Rio Grande do Sul, Rosário do Sul, sanga Santo Antônio, tributary to rio Ibicuí da Armada, lower rio Uruguay.
FIGURE 17 in Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands
FIGURE 17 | Scleronema minutum (MCP 17514; 39.8 mm SL), Brazil, Rio Grande do Sul, São Lourenço do Sul, arroio São Lourenço, laguna dos Patos system.
Fig. 1. A in Trichomycterus venulosus (Steindachner, 1915), a junior synonym of Eremophilus mutisii Humboldt, 1805 (Siluriformes: Trichomycteridae) and not an extinct species
Fig. 1. A. Trichomycterus venulosus, syntype of Pygidium venulosum, 87 mm SL, illustration from Steindachner (1915b); B. Eremophilus mutisii, MPUJ 2528, 54.0 mm SL, Colombia, Cundinamarca, Municipio Guatavita, embalse de Tominé, Vereda Chaleche, Club Náutico Refugio de Tominé, 4º59'10.7"N 73º49'09"W, 2622 m asl, río Magdalena basin; C. E. mutisii, MPUJ 2528, 72.1 mm SL; D. E. mutisii, MBUCV-V-32796, 221.9 mm SL, Colombia, Nariño, Laguna de La Cocha, río Guamuéz drainage, tributary of río Putumayo, Amazon River basin. Scale bars 1 cm.
Fig. 2 in Trichomycterus venulosus (Steindachner, 1915), a junior synonym of Eremophilus mutisii Humboldt, 1805 (Siluriformes: Trichomycteridae) and not an extinct species
Fig. 2. Dorsal view of head of syntype of Pygidium venulosum (NMW 44476: 1, 108.0 mm SL), showing cephalic sensory pores. Abbreviations: i1, infraorbital sensory pore 1; i3, infraorbital sensory pore 3; i10-11, infraorbital sensory pores 10 and 11; pre, preopercular sensory pore; s1-3, supraorbital sensory pores 1-3; s6, supraorbital sensory pore 6 (epiphyseal branch).
Fig. 4 in Redescription of Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) (Siluriformes: Trichomycteridae): a possible case of incipient paedomorphism
Fig. 4. Juvenile of Ochmacanthus alternus, FMNH 99611 (13.50 mm SL), Ecuador, Napo, tributary of Shusshufindi River.
Fig. 1 in Redescription of Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) (Siluriformes: Trichomycteridae): a possible case of incipient paedomorphism
Fig. 1. Ochmacanthus batrachostoma, holotype, MNRJ 786 (29.15 mm SL), Brazil, Mato Grosso, Corumbá, rio Paraguai at São Luiz de Cáceres.
Fig. 3 in Redescription of Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) (Siluriformes: Trichomycteridae): a possible case of incipient paedomorphism
Fig. 3. Geographic distribution of Ochmacanthus batrachostoma (black star, holotype; black circle, non-type material).
Fig. 2. Ochmacanthus batrachostoma, MZUSP 59340 in Redescription of Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) (Siluriformes: Trichomycteridae): a possible case of incipient paedomorphism
Fig. 2. Ochmacanthus batrachostoma, MZUSP 59340 (25.25 mm SL), Brazil, Mato Grosso do Sul, Corumbá, dead arm of Abobral 3.
Fig. 3 in Microstructural chromosome reorganization in the genus Trichomycterus (Siluriformes: Trichomycteridae)
Fig. 3. Distribution pattern of 5S (green) and 18S rDNA sites (red) in metaphase of nine species of Trichomycterus analyzed: a) T. davisi; b) T. diabolus; c) T. paulinus; d) Trichomycterus sp. 3; e) Trichomycterus sp. 2; f) T. iheringi; g) T. mimonha; h) T. zonatus; and i) Trichomycterus sp. 1. Note co-localization between 5S and 18S rDNA sites occurring at least in one chromosome pair in all the species and are evidenced by the white arrows. Bar =10µm.
FIGURE 11 in Uncertainties and risks in delimiting species of Cambeva (Siluriformes: Trichomycteridae) with single-locus methods and geographically restricted data
FIGURE 11 | Bayesian phylogenetic tree of Cambeva species obtained from COI data. The vertical red line shows the coalescent branching process estimated by using the single-threshold model in the GMYC combination 4 (strict clock model vs. a coalescent constant population
FIGURE 7 in Uncertainties and risks in delimiting species of Cambeva (Siluriformes: Trichomycteridae) with single-locus methods and geographically restricted data
FIGURE 7 | Coloration pattern of Cambeva species. (A, B). Cambeva guaraquessaba, UFRGS 24554, 37.0 and 36.9 mm SL, respectively, tributary of Guaraqueçaba River basin, Paranaguá Bay. C–D. Cambeva tupinamba, UFRGS 24550, 63.0 mm SL and 39.4 mm SL, Betari River, Ribeira de Iguape River basin.
FIGURE 10 in Uncertainties and risks in delimiting species of Cambeva (Siluriformes: Trichomycteridae) with single-locus methods and geographically restricted data
FIGURE 10 | Variation on the coloration of Cambeva sp. 2 from (A–D) Tubarão River, UFRGS 24553, 66.1, 45.4, and 56.04, 52.1 mm SL, and (E, F) Araranguá River, UFRGS 22964, 61.1 and 60.7 mm SL, respectively, showing a unique color pattern that differs from other congeners in the study area: one layer of coloration composed of not coalescent round small blotches.
FIGURE 8 in Uncertainties and risks in delimiting species of Cambeva (Siluriformes: Trichomycteridae) with single-locus methods and geographically restricted data
FIGURE 8 | Coloration pattern of Cambeva zonata, (A–C) UFRGS 24538, (A) 51.1 mm SL, (B) 48.4 mm SL, Betari River, Ribeira de Iguape River basin, and (C) 41.4 mm SL.
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