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275 results for “Heptapteridae”
FIGURE 1. Phenacorhamdia roxoi, MZUSP 125819, 63.8 in A new species of Phenacorhamdia Dahl 1961 (Siluriformes: Heptapteridae) from the Paranapanema River basin, southeastern Brazil
FIGURE 1. Phenacorhamdia roxoi, MZUSP 125819, 63.8 mm SL, holotype, from São Paulo State, Botucatu Municipality, Córrego Hortelã, rio Paranapanema, Upper Paraná River basin. (a) dorsal view, (b) lateral view and (c) ventral view.
FIGURE 8 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 8. Linear regression of the main morphological measures to differentiate Mastiglanis yaguas (white circle), and Mastiglanis asopos (black circle). Dashed lines represent the 95% confidence interval.
FIGURE 7 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 7. Scatter plot of Principal Component Analysis (PCA) between component 2 and component 3, of Mastiglanis asopos (red), and Mastiglanis yaguas (blue).
FIGURE 6 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 6. Boxplot showing meristic variation among Mastiglanis. (A) Total number of unbranched anal-fin rays. (B) Total number of branched anal-fin rays.
FIGURE 2 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 2. Dorsal view of cranium of Mastiglanis yaguas, paratype, MUSM 61686, 42.7 mm SL. Abbreviations: af = anterior fontanel; ap = autopalatine; ep = epioccipital; ex = exoccipital; fr = frontal; le = lateral ethmoid; mx = maxilla; na = nasal; pf = posterior fontanel; pm = premaxilla; pt = pterotic; soc = supraoccipital; sp = sphenotic; tp4a = anterior branch of transverse process of vertebra 4; tp4b = posterior branch of transverse process of vertebra 4; tp5 = transverse process of vertebra 5. Arrow = symphysial region of premaxilla.
FIGURE 5 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 5. Geographical distribution of Mastiglanis yaguas (red circle), M. asopos (white triangle), and M. durantoni (yellow square). Stars represent the type localities of each species. Each symbol may represent more than one specimen.
FIGURE 4 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 4. Lateral view of caudal skeleton of Mastiglanis yaguas, paratype, MUSM 61686, 42.7 mm SL. Abbreviations: epu = epural; hu1 + hu2 = hypurals 1 and 2; hu3 + hu4 + hu5 = hypurals 3, 4, and 5; ph = parhypural; pu1 + u1 = preural centrum 1 and ural centrum 1; pu2 = preural centrum 2; ur = uroneural. Arrows: anterior processes.
FIGURE 1 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 1. Mastiglanis yaguas, new species, MUSM 66612, holotype, 49.1 mm SL, (A) Lateral view of right side (image flipped), (B) Dorsal view, (C) Ventral view. Bar = 1 cm.
FIGURE 3 in A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru
FIGURE 3. Lateral view of suspensorium of Mastiglanis yaguas, paratype, MUSM 61686, 42.7 mm SL. Abbreviations: en = entopterygoid; hy = hyomandibula; io = interopercle; mt = metapterygoid; op = opercle; pop = preopercle; and qu = quadrate.
Data from: Genetic and morphometric evidence for the recognition of several recently synonymized species of trans-Andean Rhamdia (Pisces: Siluriformes: Heptapteridae)
A recent taxonomic revision of the Neotropical catfish genus Rhamdia (Pisces: Siluriformes: Heptapteridae) reduced a number of described species to synonymy, especially under a broadly circumscribed R. quelen. Evidence is presented here from DNA sequence data, external morphology, and morphometrics that argues for the recognition of R. guatemalensis in Central and northern South America and R. saijaensis and R. cinerascens in the Pacific drainages of Colombia and Ecuador, respectively. The DNA data indicate that all trans-Andean samples form a monophyletic group, within which there are separate clades corresponding to R. laticauda and the synonymized R. guatemalensis, R. saijaensis, and R. cinerascens. The morphometric data substantiate the phylogenetic groupings, and in external morphology, each putative species has diagnostic characters. Rhamdia guatemalensis is characterized by insertion of the adipose fin closer to the dorsal fin than to the caudal fin and presence of a conspicuous lateral longitudinal dark band; R. saijaensis is characterized by a small head with head length 20.8–23.4% of standard length and by lacking a lateral longitudinal band; and R. cinerascens is characterized by a large head with head length 25.8–30.1% of standard length, base of the adipose fin 30.3–33.3% of standard length, outer mental barbels extending to the base of the pectoral rays, and presence of a faint lateral longitudinal band. The external morphological differences and phylogenetic relationships indicate that these groups are both recognizable and represent independent lineages, which argue for their recognition as species.
FIGURE 1 in A new phreatic catfish of the genus Phreatobius Goeldi 1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)
FIGURE 1. Map of northern South America showing the known collection localities for Phreatobius cisternarum (circles) and P. sanguijuela (square).
FIGURE 3 in A new phreatic catfish of the genus Phreatobius Goeldi 1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)
FIGURE 3. Phreatobius cisternarum, syntype, FMNH 58580, 32.2 mm SL, dorsal view showing presence of eyes. Photograph by Mike Littmann, image courtesy of ACSI and FMNH Division of Fishes.
FIGURE 2 in A new phreatic catfish of the genus Phreatobius Goeldi 1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)
FIGURE 2. Phreatobius sanguijuela, new species, holotype, UMSS 1785, 42.1 mm SL. (A) lateral view; (B) dorsal view of head; (C) ventral view of head; scale bar is 5 mm.
FIGURE 27 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 27. Cladogram depicting relationships among species of Rhamdella. The number of characters and their states correspond to the sequence presented in the text. Reversals are indicated by the negative numbers between brackets.
FIGURE 24 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 24. Gill arches of Pimelodella sp., UFRJ 503, 89.5 mm SL. Dorsal view. Gill rakers and dorsal elements of left gill arches not shown. Scale bar = 3 mm.
FIGURE 13 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 13. Anterior portion of hyoid arches and lower gill arches of Rhamdella cainguae, LIRP 3045, male, 149.9 mm SL, paratype. Dorsal view. Scale bar = 3 mm.
FIGURE 10 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 10. Lower jaws of Rhamdella cainguae, LIRP 3045, male, 149.9 mm SL, paratype. Ventral view. Scale bar = 5 mm.
FIGURE 14 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 14. Gill arches of Rhamdella cainguae, LIRP 3045, male, 149.9 mm SL, paratype. Dorsal view. Gill rakers and dorsal elements of left gill arches not shown. Scale bar = 5 mm.
FIGURE 7 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 7. Cranium of Rhamdella cainguae, LIRP 3045, male, 149.9 mm SL, paratype. Dorsal view. Arrow points to frontal-sphenotic space. Scale bar = 5 mm.
FIGURE 5 in Anatomy and phylogenetic relationships of a new catfish species from northeastern Argentina with comments on the phylogenetic relationships of the genus Rhamdella Eigenmann and Eigenmann 1888 (Siluriformes, Heptapteridae)
FIGURE 5. Head of Rhamdella cainguae, LIRP 3045, male, 153.8 mm SL, paratype, showing laterosensory canals. Ventral view. Scale bar = 10 mm.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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