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53 results for “Gephyrocharax”
FIGURE 24 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 24. Regression plot by sex of (A) pectoral fin to pelvic fin length and (B) pelvic-fin length as function of SL for Gephyrocharax melanocheir (in A: females, r = 0.96, r2 = 0.92, ɑ = 0, β = 0.209, n = 48; males, r = 0.69, r2 = 0.48, ɑ = 0, β = 0.180, n = 39, in B: females, r = 0.94, r2 = 0.88, ɑ = 0, β = 0.153, n = 48; males, r = 0.77, r2 = 0.60, ɑ = 0, β = 0.177, n = 39).
FIGURE 22 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 22. Gephyrocharax melanocheir, (A) male, neotype by present designation, 32,6 mm SL, FMNH 125572; (B) female, paratype, 35.4 mm SL, CAS 44293; (C) male, 33.8 mm SL, CIUA 1060. Additional illustrations in Vanegas-Ríos et al. (2013: fig. 7). White arrow indicates pigmentation of outer branched pectoral-fin ray.
FIGURE 23 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 23. Gephyrocharax melanocheir, (A–B) upper and lower jaws, female, 35.6 mm SL, CZUT-IC 196, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 36.0 mm SL, CZUT-IC 196, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, posteroventral lobe: pvl, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 21 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 21. Gephyrocharax martae, male, holotype, 34.5 mm SL, MZLU L939/3703: (A–B) upper and lower jaws, right side; (C–D) detail of lower caudal skeleton, associated pouch scale, and posteriormost ventral procurrent rays, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, posteroventral lobe: pvl, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 20 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 20. Gephyrocharax martae, male, holotype, 34.5 mm SL, MZLU L939/3703: (A) lateral view of body; (C) middle and distal portions of posteriormost unbranched anal-fin ray. Left side. Scale = 1 mm.
FIGURE 7 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 7. Gephyrocharax caucanus, (A) female, holotype, 49.4 mm SL, FMNH 56012; (B) male, 38.9 mm SL, IMCN 4834; (C) female, 48.5 mm SL, MCZ 35872. White arrow indicates characteristic pigmentation of adult males.
FIGURE 19 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 19. Sheared principal component analysis of morphometric data of Gephyrocharax major: (A–B) comparison among type specimens of G. major and G. chaparae (its junior synonym); (C–D) comparison among specimens organized by geographic groups. Left plots (A and C) showing first and second principal components (PC1 vs. PC2), right plots (B and D) showing second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
FIGURE 14 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 14. Gephyrocharax intermedius, (A) male, holotype, 44.2 mm SL, FMNH 8945; (B) female, paratype, 39.1 mm SL, FMNH 12512; (C) male, STRI 7654, 36.5 mm SL; (D) male, holotype of G. whaleri, 39.5 mm SL, USNM 106513; (E) female, paratype, 37.2 mm SL, USNM 235926.
FIGURE 17 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 17. Gephyrocharax major, (A) male, lectotype by present designation, 40.6 mm SL, CAS 44286; (B) male, 45.7 mm SL, CAS 78813; (C) female, 48.1 mm SL, CAS 78813; (D) male, 60.0 mm SL, MUSM 12946; (E) female, holotype of Corynopomops opisthopterus, 30.9 mm SL, ANSP 69195; (F) female, holotype of G. chaparae, 32.8 mm SL, ANSP 68967. Photographs represent some geographic groups analyzed using SPCA in text.
FIGURE 2 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 2. Geographic distribution of Gephyrocharax major, a Cis-Andean species, from Amazon River basin in Bolivia and Peru.
FIGURE 6 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 6. Tukey box plots of (A) number of maxillary teeth, (B) number of branched anal-fin rays, (C) number of branched pelvic-rays, and (D) number of lateral-line scales comparing among Gephyrocharax species. Number of specimens between brackets.
FIGURE 1 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 1. Geographic distribution of Trans-Andean species of Gephyrocharax occurring west from eastern versant of Andean Cordillera in northwestern South America to southern Central America.
FIGURE 10 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 10. Gephyrocharax chocoensis, (A) male, holotype, 48.2 mm SL, FMNH 56016; (B) female, 45.0 mm SL, AMNH 5330; (C) male, 35.5 mm SL, CAR 320; (D) male, 32.1 mm SL, CI-FML 6103. Additional illustration in Maldonado-Ocampo et al. (2012: 145). Humeral blotch variably present across photos A–D.
FIGURE 13 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 13. Sheared principal component analysis of morphometric data of Gephyrocharax chocoensis (specimens grouped by absence/presence of humeral blotch): (A) plot of first and second principal components (PC1 vs. PC2); (B) plot of second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
FIGURE 18 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 18. Gephyrocharax major, (A–B) upper and lower jaws, female, 46.5 mm SL, UF 38194; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 49.4 mm SL, MUSM 8518. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view, left side. Scale = 1 mm.
FIGURE 15 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 15. Gephyrocharax intermedius, (A–B) upper and lower jaws, female, 40.8 mm SL, STRI 1209, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 42.6 mm SL, STRI 1209, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 11 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 11. Gephyrocharax chocoensis, (A–B) upper and lower jaws, female, 39.4 mm SL, IMCN 4830, right side; (C–D) detail of lower caudal skeleton and associated pouch scale, male, 38.9 mm SL, IMCN 4830, left side. Anguloarticular: aa, dentary: dt, maxilla: mx, premaxilla: pm, pouch scale: ps, posteroventral lobe: pvl, principal caudal-fin ray: pcr, retroarticular: ra, spur-shaped structure: sss, ventral procurrent ray: vpr. Lateral view. Scale = 1 mm.
FIGURE 12 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 12. Regression plot by sex of pectoral fin to pelvic fin length as function of SL for Gephyrocharax chocoensis (females, r = 0.98, r2 = 0.96, ɑ = 0, β = 0.212, n = 53; males, r = 0.90, r2 = 0.81, ɑ = 0, β = 0.194, n = 44).
FIGURE 9 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 9. Regression plot by sex of caudal peduncle depth as function of SL for Gephyrocharax caucanus (females, r = 0.98, r2 = 0.96, ɑ = 0, β = 0.088, n = 31; males, r = 0.96, r2 = 0.92, ɑ = 0, β = 0.097, n = 31).
FIGURE 16 in Taxonomic review of the Neotropical genus Gephyrocharax Eigenmann, 1912 (Characiformes, Characidae, Stevardiinae)
FIGURE 16. Sheared principal component analysis of morphometric data of Gephyrocharax intermedius: (A–B) comparison among type specimens of G. intermedius and G. whaleri (its junior synonym); (C–D) comparison among specimens organized by geographic groups. Left plots (A and C) showing first and second principal components (PC1 vs. PC2), right plots (B and D) showing second and third principal components (PC2 vs. PC3). Sheared principal component: H, principal component centered by groups: S. Percentage of explained variance beside each component.
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