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58 results for “Pimelodella”
Figura 3. a in Nuevos registros de Pimelodella laticeps Eigenmann, 1917 (Siluriformes, Heptapteridae) y ampliación de su distribución occidental hacia los Andes Centrales de Argentina
Figura 3. a) Mapa de Argentina con la distribución de la especie Pimelodella laticeps (Tomado de Liotta (2005)), b) Mapa hidrográfico de la Provincia de San Juan: se indica el registro previo de Pimelodella laticeps y los nuevos puntos de muestreos en los que se registró la especie.
Figura 2 in Nuevos registros de Pimelodella laticeps Eigenmann, 1917 (Siluriformes, Heptapteridae) y ampliación de su distribución occidental hacia los Andes Centrales de Argentina
Figura 2. Imagen de la especie Pimelodella laticeps (ejemplar conservado), a) vista dorsal, b) vista lateral izquierda. Ejemplar (UNSJ-P1042; 65.98 mm) depositado en la colección científica DIBIOVA.
Figura 1 in Nuevos registros de Pimelodella laticeps Eigenmann, 1917 (Siluriformes, Heptapteridae) y ampliación de su distribución occidental hacia los Andes Centrales de Argentina
Figura 1. Imagen de la especie Pimelodella laticeps (UNSJ-P1043; 55.41mm LS). Figure 1. Image of the species Pimelodella laticeps (UNSJ-P1043; 55.41mm LS).
Fig. 7 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 7. Relationship between the standard length and the length of the upper lobe of the caudal fin in Pimelodella 2n = 46 (dark diamonds, N = 13) and 2n = 52 (light squares, N = 15).
Fig. 3 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 3. Dendrogram of genetic similarity among the species of Pimelodella from the Miranda River based on the Jaccard coefficient and on UPGMA clustering method, showing the formation of two clusters.
Fig. 6. a in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 6. a to c) Pimelodella 2n = 52, from the Miranda River basin, Passo do Lontra, MS: a) dorsal filament and upper lobe of caudal fin elongated (male, 123.6 mm SL), b) dorsal fin filament slightly elongated and upper lobe of caudal fin elongated (male, 106.8 mm SL), c) filament on dorsal fin absent and upper lobe of caudal fin not elongated (male, 117.6 mm SL). d to f) Pimelodella 2n = 46 from the Miranda River basin, Passo do Lontra, MS: d) filament on dorsal fin elongated and upper lobe of caudal fin slightly elongated (male, 82.7 mm SL), e) Filament on the dorsal fin slightly elongated and upper lobe of caudal fin not elongated (female, 93.2 mm SL), f) Filament on the dorsal fin absent and upper lobe of caudal fin elongated (female, 85.1 mm SL).
Fig. 2 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 2. Karyotypes of Pimelodella from the Miranda River, Passo do Lontra, Mato Grosso do Sul State. (a) 2n = 46, and (b) 2n = 52.
Fig. 1 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 1. Collection sites of Pimelodella specimens (black circle, 19°34'37"S and 57°00' 42"W) in the Miranda River basin, Passo do Lontra, Mato Grosso do Sul State, Brazil.
Fig. 4 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 4. Projection of the individual scores obtained through the analysis of the Principal Components of the combined samples of Pimelodella with 2n = 46 (diamonds) and with 2n = 52 (squares).
Fig. 5 in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil
Fig. 5. Pectoral-fin spines in Pimelodella from the Miranda River. a) 2n = 46; b) 2n = 52. Scale bar = 5 mm.
FIGURE 2 in A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution
FIGURE 2 | Left lateral view of radiographs of Pimelodella species, illustrating the dorsal lamina of Weberian complex vertebrae of A. Pimelodella guato, paratype, ZUFMS-PIS 647, 90.1 mm SL; B. P. taeniophora, ZUFMS-PIS 6320, 68.9 mm SL; C. P. mucosa, holotype, CAS 63720, 97.4 mm SL; and D. P. serrata, LIRP 10022, 83.6 mm SL.
FIGURE 5 in A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution
FIGURE 5 | Sexually dimorphic traits in an adult male specimen of Pimelodella guato (paratype, CIUnB 1772, 93.8 mm SL). A. Filament on the non-spinous portion of dorsal-fin second (unbranched) ray, indicated by a white arrow; and B. Enlarged urogenital papilla, indicated by a white arrow. Scale bars = 1 cm.
FIGURE 4 in A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution
FIGURE 4 | Geographic distribution of Pimelodella guato in the rio Paraguai basin (red star, type-locality; red dots, paratype localities). The symbols might represent more than one voucher specimen each.
FIGURE 1 in A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution
FIGURE 1 | Pimelodella guato, holotype, ZUFMS-PIS 8515, 78.5 mm SL, Brazil, Mato Grosso do Sul, Corumbá municipality, rio Paraguai basin, rio Miranda, sandy beaches at Passo do Lontra region, 19°34'37"S 57°00'42"W. A. Dorsal; B. Left lateral; and C. Ventral views. Scale bar = 1 cm.
FIGURE 3 in A new species of Pimelodella (Siluriformes: Heptapteridae) from the Paraguai basin, Brazil, with a discussion regarding its distribution
FIGURE 3 | Pectoral-fin spine of A. Pimelodella guato, paratype, CIUnB 1772, 91.2 mm SL, length of spine 16.7 mm; B. P. taeniophora, ZUFMS-PIS 6320, 68.9 mm SL, length of spine 11.4 mm; C. P. mucosa, holotype, CAS 63720, 97.4 mm SL, length of spine 22.8 mm; D. P. serrata, holotype, FMNH 57979, 55.7 mm SL, length of spine 18.3 mm; and E. P. howesi, holotype, ANSP 69036, 79.3 mm SL, length of spine 17.8 mm.
Fig. 6. Pimelodella gracilis spermatozoa. A in Comparative description and discussion of spermiogenesis and spermatozoal ultrastructure in some species of Heptapteridae and Pseudopimelodidae (Teleostei: Siluriformes)
Fig. 6. Pimelodella gracilis spermatozoa. A: longitudinal section. A: X 21000. B: nucleus in cross section. B: X 21000. C, E: midpiece in longitudinal sections. C: X 20300; E: X 25200. D, F,G: midpieces in cross sections. D: X 29700; F: X 29400; G: X 29000. H: flagella in cross and longitudinal sections. H: X 25200. C: centriolar complex; F: flagellum; H: head; M: mitochondria; MP: midpiece; N: nucleus; V: vesicle.
Fig. 3. Pimelodella gracilis spermatids. A in Comparative description and discussion of spermiogenesis and spermatozoal ultrastructure in some species of Heptapteridae and Pseudopimelodidae (Teleostei: Siluriformes)
Fig. 3. Pimelodella gracilis spermatids. A: early spermatids in longitudinal section. A: X 12000. B, D: longitudinal sections. B: X 13000; D: X 14500. C, E, F: midpieces in cross sections. C: X 23200; E: X 21000; F: 18900. C: centriolar complex; F: flagellum; M: mitochondria; N: nucleus; V: vesicle; arrow: pseudo-cytoplasmic channel.
Figure 5 in The rediscovery of Pimelodella longipinnis (Borodin, 1927), an enigmatic Atlantic Rainforest catfish species from Southeastern Brazil (Siluriformes: Heptapteridae)
Figure 5. Distribution of Pimelodella longipinnis in Southeastern coastal Mata Atlântica streams of São Paulo State. In green is demarked part of the Parque Estadual da Serra do Mar extension.The collection sites are indicated by a black dot.The dot may correspond to more than one collection site. The center of Santos municipality is indicated by a black square.
Figure 4 in The rediscovery of Pimelodella longipinnis (Borodin, 1927), an enigmatic Atlantic Rainforest catfish species from Southeastern Brazil (Siluriformes: Heptapteridae)
Figure 4. Live specimens of P. longipinnis, showing the coloration in life (preserved in MZUSP 116324).
Figure 3 in The rediscovery of Pimelodella longipinnis (Borodin, 1927), an enigmatic Atlantic Rainforest catfish species from Southeastern Brazil (Siluriformes: Heptapteridae)
Figure 3. Left lateral view of an ethanol-preserved, recently collected specimen of P. longipinnis, MZUSP 116324, 57.6 mm SL.
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