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152 results for “Trichomycterus”
Figure 3 from: Costa WJEM, Feltrin CRM, Mattos JLO, Katz AM (2024) Relationships and description of a new catfish species from Chapada Diamantina, the northernmost record of Trichomycterus s.s. (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 100(1): 223-231. https://doi.org/10.3897/zse.100.115564
Figure 3 Trichomycterus (Psammocambeva) diamantinensis sp. nov., UFRJ 13690, paratype, 27.1 mm SL: A. Left lateral view; B. Dorsal view; C. Ventral view.
Figure 2 from: Costa WJEM, Feltrin CRM, Mattos JLO, Katz AM (2024) Relationships and description of a new catfish species from Chapada Diamantina, the northernmost record of Trichomycterus s.s. (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 100(1): 223-231. https://doi.org/10.3897/zse.100.115564
Figure 2 Trichomycterus (Psammocambeva) diamantinensis sp. nov., UFRJ 13688, holotype, 82.2 mm SL: A. Left lateral view; B. Dorsal view; C. Ventral view.
Figure 1 from: Costa WJEM, Feltrin CRM, Mattos JLO, Katz AM (2024) Relationships and description of a new catfish species from Chapada Diamantina, the northernmost record of Trichomycterus s.s. (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 100(1): 223-231. https://doi.org/10.3897/zse.100.115564
Figure 1 Bayesian Inference topology calculated using MrBayes 3.2.7a for 33 taxa. The dataset comprised two mitochondrially encoded genes (COI, CYTB) and one nuclear gene (RAG2), with a total of 2430 bp. The numbers above branches indicate Bayesian posterior probabilities from the Bayesian Inference analysis and the ultrafast bootstrap and regular bootstrap values from the Maximum Likelihood analyses, respectively, separated by a bar. Asterisks (*) indicate maximum support values and dashes (-) indicate values below 50.
Figure 5 from: Costa WJEM, Katz AM (2022) A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 98(1): 13-21. https://doi.org/10.3897/zse.98.72392
Figure 5 Map of geographical distribution of Trichomycterus largoperculatus sp. nov. and closely related species.
Figure 2 from: Costa WJEM, Katz AM (2022) A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 98(1): 13-21. https://doi.org/10.3897/zse.98.72392
Figure 2 Head of Trichomycterus largoperculatus sp. nov., UFRJ 6987, holotype, 77.8 mm SL: A. Dorsal view; B. Left lateral view.
Figure 4 from: Costa WJEM, Katz AM (2022) A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 98(1): 13-21. https://doi.org/10.3897/zse.98.72392
Figure 4 Osteological structures of Trichomycterus largoperculatus: A. Mesethmoidal region and adjacent structures, middle and left portion, dorsal view; B. Left jaw suspensorium and opercular apparatus, lateral view; C. Middle and left portion of brachial arches, ventral view of dorsal elements on left, dorsal view of ventral elements on right. Abbreviations: ac4, accessory cartilage basibranchial 4; b2–3, basibranchials 2–3; bc4, cartilaginous basibranchial 4; c1–5, ceratobranchials 1–5; e1–4, epibranchials 1–4; epf, expanded pre-opercular ventral flap; p3, pharyngobranchial 3; h1–3, hypobranchials 1–3; hog, hyomandibular outgrowth; pt4, pharyngobranchial 4 tooth-plate. Larger stippling represents cartilages.
Figure 3 from: Costa WJEM, Katz AM (2022) A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 98(1): 13-21. https://doi.org/10.3897/zse.98.72392
Figure 3 Trichomycterus largoperculatus sp. nov., left lateral view: A. UFRJ 6988, paratype, 70.0 mm SL; B. UFRJ 6988, paratype, 49.0 mm SL.
Figure 1 from: Costa WJEM, Katz AM (2022) A new catfish of the genus Trichomycterus from the Rio Paraíba do Sul Basin, south-eastern Brazil, a supposedly migrating species (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 98(1): 13-21. https://doi.org/10.3897/zse.98.72392
Figure 1 Trichomycterus largoperculatus sp. nov., UFRJ 6987, holotype, 77.8 mm SL: A. Left lateral view; B. Dorsal view; C. Ventral view.
Supplementary material 1 from: Costa WJEM, Mattos JLO, Sampaio WMS, Giongo P, de Almeida FB, Katz AM (2022) Phylogenetic relationships of a new catfish of the genus Trichomycterus (Siluriformes, Trichomycteridae) from the Brazilian Cerrado, and the role of Cenozoic events in the diversification of mountain catfishes. Zoosystematics and Evolution 98(1): 151-164. https://doi.org/10.3897/zse.98.83109
Tables S1, S2
Figure 1 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 1 - Location of sample sites of Trichomycterus areolatus populations located in two river basins from southern Chile. Bueno River basin: A Tijeral River, and B Huilma River; Biobío River basin: C Biobío River.
Figure 4 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 4 - Scatterplot for individual scores from Discriminant Function Analysis (DF1 on DF2) of three Trichomycterus areolatus populations from southern Chile according to 17 truss measurements derived from a truss network. Crosses indicate group centroids.
Figure 3 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 3 - Scatterplot for individual scores from Principal Component Analysis (PC1 on PC2) of three Trichomycterus areolatus populations from southern Chile according to 22 truss measurements derived from a truss network.
Figure 2 from: Colihueque N, Corrales O, Yáñez M (2017) Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae). ZooKeys 695: 135-152. https://doi.org/10.3897/zookeys.695.13360
Figure 2 - Position of the anatomical landmarks used to measure the size of 22 morphological characters on Trichomycterus areolatus based on a truss network. Definition of each character and its classification according to body shape dimension covered by them was as follows: a Head length, 1–2 = ventral tip of the operculum to tip of the head, 2–4 = tip of the head to posterior margin of the head b Head depth, 1–4 = ventral tip of the operculum to posterior margin of the head, 3–4 = base of the pectoral fin to posterior margin of the head c Anterior body length, 1–3 = ventral tip of the operculum to base of the pectoral fin, 3–5 = prepelvic length; 4–5 = posterior margin of the head to base of the pelvic fin; 3–6 = base of the pectoral fin to anterior base of the dorsal fin; 4–6 = predorsal length d Middle body depth, 5–6 = base of the pelvic fin to anterior base of the dorsal fin, 5–8 = base of the pelvic fin to posterior base of the dorsal fin, 6–7 = anterior base of the dorsal fin to anterior base of the anal fin, 7–8 = anterior base of the anal fin to posterior base of the dorsal fin e Middle body length, 5–7 = base of the pelvic fin to anterior base of the anal fin, 6–8 = dorsal fin base length, 7–9 = anal fin base length f Posterior body length, 7–10 = anterior base of the anal fin to dorsal posterior margin of the caudal peduncle, 9–10 = posterior base of the anal fin to dorsal posterior margin of the caudal peduncle g Peduncle depth, 8–9 = anterior caudal peduncle depth, 10–11 = posterior caudal peduncle depth h Peduncle length, 8–10 = dorsal caudal peduncle length, 9–11 = ventral caudal peduncle length.
Fig. 4 in Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae)
Fig. 4. Branchial skeleton of Trichomycterus igobi, MPEG 13354, paratype. Ventral view. Dorsal elements of gill arches and gill rakers not shown. Branchial cartilaginous structures not stained in this specimen. Abreviations: BB2-3, basibranchials 2 and 3; CB 1-5, ceratobranchials 1 to 5; HB1- 3, hypobranchials 1 to 3. Arrow indicates posteroventral margin of third ceratobranchial.
Fig. 2 in Trichomycterus igobi, a new catfish species from the rio Iguaçu drainage: the largest head in Trichomycteridae (Siluriformes: Trichomycteridae)
Fig. 2. Head of Trichomycterus igobi, MPEG 13352, holotype, 90.1 mm SL: A) Dorsal view; B) Lateral view; C) Ventral view. Scale bar = 1 cm.
Fig. 3. Trichomycterus maracaya, n in Trichomycterus maracaya, a new catfish from the upper rio Paraná, southeastern Brazil (Siluriformes: Trichomycteridae), with notes on the T. brasiliensis species-complex
Fig. 3. Trichomycterus maracaya, n. sp. (ZUEC 6136), paratypes photographed in field aquarium shortly after collection. a, juvenile 24.1 mm SL; b, presumed adult 45.6 mm SL.
Figure 6 from: Katz AM, Barbosa MA, de Oliveira Mattos JL, da Costa WJE (2018) Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 94(2): 557-566. https://doi.org/10.3897/zse.94.29872
Figure 6 Dorsal view of premaxilla and maxilla. ACambevadavisi, UFRJ 10713 BScleronemaoperculatum, UFRJ 11856. CScleronema sp1., UFRJ 10645. Scale bar: 1 mm max, maxilla; pre, premaxilla.
Figure 5 from: Katz AM, Barbosa MA, de Oliveira Mattos JL, da Costa WJE (2018) Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 94(2): 557-566. https://doi.org/10.3897/zse.94.29872
Figure 5 Left suspensory in dorsal view. ATrichomycterusgiganteus, UFRJ 5732, paratype. BCambevadavisi, UFRJ 10713. CTrichomycterusalternatus, UFRJ 5673. DCambevazonata, UFRJ 11900. ETrichomycterusbrasiliensis, UFRJ 4834. FCambevabrachykechenos, UFRJ 10586. GScleronemaoperculatum, UFRJ 11856. Scale bar: 1 mm hy, hyomandibula; iop, interopercle; mtg, metapterygoid; op, opercle; pop, preopercle.
Figure 4 from: Katz AM, Barbosa MA, de Oliveira Mattos JL, da Costa WJE (2018) Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 94(2): 557-566. https://doi.org/10.3897/zse.94.29872
Figure 4 Left lower jaw in medial view. ATrichomycterusgiganteus, UFRJ 5732, paratype. BCambevadavisi, UFRJ 10713. CTrichomycterusalternatus, UFRJ 9900. DCambevazonata, UFRJ 11900. ETrichomycterusbrasiliensis, UFRJ 4834. FCambevabrachykechenos, UFRJ 10586. GScleronemaoperculatum, UFRJ 11856. Scale bar: 1 mm aar, anguloarticuloretroarticular; corp.p, coronoid process; de, dentary; max.de.ch., maxillo-dentary channel; b.f. bone flap.
Figure 3 from: Katz AM, Barbosa MA, de Oliveira Mattos JL, da Costa WJE (2018) Multigene analysis of the catfish genus Trichomycterus and description of a new South American trichomycterine genus (Siluriformes, Trichomycteridae). Zoosystematics and Evolution 94(2): 557-566. https://doi.org/10.3897/zse.94.29872
Figure 3 Cambevadavisi, topotype, UFRJ 9759, 67.6 mm SL; Brazil: Paraná: Balsa Nova. Photograph by A. M. Katz.
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