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57 results for “Apteronotidae”
FIGURE 14 in A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus
FIGURE 14 | Sample of diversity of maxilla shape in Apteronotidae, emphasizing the Navajini. Maxillae are illustrated in lateral view and are not drawn to scale.
FIGURE 12 in A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus
FIGURE 12 | Collection localities of Tenebrosternarchus preto, star indicating type locality. Some points indicate multiple collections or lots from proximate locations.
FIGURE 4 in A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus
FIGURE 4 | Suspensorium, opercular series, and lower jaw of Tenebrosternarchus preto, MUSM 54617 (198 mm TL) in A. lateral and B. medial view (image reflected). Thin, unstained hard tissue associated with opercular bones shown in light gray. Abbreviations: ang, anguloarticular; ap, autopalatine cartilage; cm, coronomeckelian; d, dentary; enp, endopterygoid; h, hyomandibula; iop, interopercle; m, Meckel's cartilage; mpt, metapterygoid; op, opercle; pop, preopercle; q, quadrate; rar, retroarticular; sym, symplectic.
FIGURE 3 in A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus
FIGURE 3 | Illustrations of the neurocranium of Tenebrosternarchus preto MUSM 54617 (198 mm TL) in dorsal A., ventral B., and lateral C. views. Cartilage shown in black. Abbreviations: bao, basioccipital; epo, epioccipital; fro, frontal; let, lateral ethmoid; met, mesethmoid; obs, orbitosphenoid; par, parietal; pas, parasphenoid; pro, prootic; pto, pterotic; pts, pterosphenoid; soc, supraoccipital; spo, sphenotic; vet, ventral ethmoid; vom, vomer.
FIGURE 1 in A redescription of deep-channel ghost knifefish, Sternarchogiton preto (Gymnotiformes: Apteronotidae), with assignment to a new genus
FIGURE 1 | Lateral view of live Tenebrosternarchus preto. A. MUSM 54656 (243 mm TL) from the río Amazonas at Iquitos, Peru; B. ANSP 207797 (232 mm TL) from the rio Negro downstream from Barcelos, Brazil; and C. Detail of the head of ANSP 207797 (232 mm TL).
Fig. 8 in Systematics and biogeography of Sternarchellini (Gymnotiformes: Apteronotidae): Diversification of electric fishes in large Amazonian rivers
Fig. 8. PCA scatter plot of species in the S. terminalis species group. Loadings of all 13 variables for PC2 reported in lower panel. Sternarchella terminalis represented as squares (n= 45), S. orthos as circles (n= 54), and Sternarchella sp. A represented as an X (n= 1).
Fig. 1 in On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia
Fig. 1. Lateral view of the paratypes of Apteronotus magdalenensis: a) BMNH 1947.7.1.38, 335 mm TL.; b) USNM 123795, 287 mmTL.
Fig. 2 in On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia
Fig. 2. Live specimens of Apteronotus magdalenensis, showing body and head. a) IAvH-P 9836 (WC 2005-09-27-01), male; b) IAvH-P 7026, (WC 2005-09-27-03), female. Scale bars = 10 mm. Arrows show position of eye.
Fig. 5 in On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia
Fig. 5. General view of the habitat of Apteronotus magdalenensis in the río Magdalena. a: type locality Torrents of Honda; b: mouth of La Malena stream near Puerto Berrio in Antioquia Department (Photo a: Willian Crampton; photo b: courtesy of Pelayo-Villamil and Ochoa-Orrego).
Fig. 3 in On Apteronotus magdalenensis (Miles, 1945) (Gymnotiformes: Apteronotidae): a poorly known species endemic to the río Magdalena basin, Colombia
Fig. 3. Distribution of Apteronotus magdalenensis in the río Magdalena, Colombia. Star: type locality; Circles: additional records in the río Magdalena; Triangle: additional record in the lower río Cauca.
Fig. 3 in Previously undescribed dental arrangement among electric knifefishes, with comments on the taxonomic and conservation status of Tembeassu marauna Triques (Otophysi: Gymnotiformes: Apteronotidae)
Fig. 3. Radiograph (inverted) showing the left side of the anterior region of head of the male paratype of Tembeassu marauna (MZUSP 23090), also exhibiting the conspicuous forward extension of the fleshy ("boneless") portions of the upper and lower jaws, in front of the premaxillary (PM) and dentary bones (DE), respectively. Additional abbreviations as in Figure 2. Arrow at left indicates the patch of extra teeth loosely attached to soft tissue at the roof of oral cavity, in front of the premaxillary bones, at the anteriorly extended portion of the upper jaw. Scale bar ~ 5 mm.
Fig. 4 in Previously undescribed dental arrangement among electric knifefishes, with comments on the taxonomic and conservation status of Tembeassu marauna Triques (Otophysi: Gymnotiformes: Apteronotidae)
Fig. 4. Radiograph (inverted) showing a detail of the left side of the upper jaw region of the female paratype of Tembeassu marauna (MZUSP 23090). Arrow at left indicates the patch of extra teeth at the anteriorly extended "boneless" portion of snout, loosely attached to soft tissue in front of the premaxillary bones (PM). Additional abbreviations as in Figure 2 (above; both maxillary bones noticed). Scale bar ~ 5 mm.
Fig. 2 in Previously undescribed dental arrangement among electric knifefishes, with comments on the taxonomic and conservation status of Tembeassu marauna Triques (Otophysi: Gymnotiformes: Apteronotidae)
Fig. 2. Radiograph (inverted) showing skeletal structures at the anterior portion of head of the holotype of Tembeassu marauna (MZUSP 48510). Arrow at left indicates the patch of extra teeth inside the mouth (roof of the oral cavity), loosely attached to soft tissue in front of the premaxillary bones (PM). Additional abbreviations are as follows: AN = anguloarticular; DE = dentary; EN = endopterygoid; FR = frontal; LE = lateral ethmoid; ME = mesethmoid; MX = maxilla; PS = pterosphenoid; VO = vomer (ventral ethmoid). Scale bar ~ 5 mm.
FIGURE 1 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 1. Lateral and dorsal views of paratype of Apteronotus mariae, CAS 62345.
FIGURE 4 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 4. Lateral view of anterior portion of Apteronotus jurubidae, ANSP 71435.
Fig. 1 in Previously undescribed dental arrangement among electric knifefishes, with comments on the taxonomic and conservation status of Tembeassu marauna Triques (Otophysi: Gymnotiformes: Apteronotidae)
Fig. 1. Holotype of Tembeassu marauna (MZUSP 48510), left side of head. Scale bar ~ 5 mm.
FIGURE 3 in Redescription of Apteronotus mariae (Eigenmann & Fisher, 1914) and the taxonomic status of Apteronotus jurubidae (Fowler, 1944) (Gymnotiformes: Apteronotidae)
FIGURE 3. Type locality of Apteronotus mariae at Giradort (black square); localities at Apulo (red) and Honda (green). Type locality of Apteronotus jurubidae at Río Jurubidá (black dot).
Fig. 7 in A New Species of Deep-channel Electric Knifefish Compsaraia (Apteronotidae, Gymnotiformes) from the Amazon River
Fig. 7. Collection localities of Compsaraia compsa (triangles) and Compsaraia samueli (squares). Some single points indicate more than one lot or collection from proximate localities.
Fig. 6 in A New Species of Deep-channel Electric Knifefish Compsaraia (Apteronotidae, Gymnotiformes) from the Amazon River
Fig. 6. Collection localities of Compsaraia iara. Star indicates type locality. Some localities not referenced in Material Examined were taken from Cox Fernandes (1995) and Crampton and Cella-Ribeiro (2013).
Fig. 3 in A New Species of Deep-channel Electric Knifefish Compsaraia (Apteronotidae, Gymnotiformes) from the Amazon River
Fig. 3. Detail of head and pigmentation for Compsaraia samueli (top), MUSM 37172, 241 mm TL, and Compsaraia iara, FMNH 128428, 235 mm TL in lateral view (A), dorsal view (B), and ventral view (C). Scale bar equals 1 cm.
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