Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
54
datasets available to search
ShareScore release 0.9.0
Dataset results
54 results for “Gymnotidae”
Fig. 4 in Kidney anatomy, histology and histometric traits associated to renosomatic index in Gymnotus inaequilabiatus (Gymnotiformes: Gymnotidae)
Fig. 4. Histological cross-sections of the head and exocrine kidney demonstrating different granulomatous structures in Gymnotus inaequilabiatus. a. severe aggregation of MMCs outer to granuloma in the exocrine kidney; PAS, bar scale = 20 µm. b. a clump of melanogenic macrophages (dark pigmented cells) adjacent to granuloma in the head kidney. The hematopoietic tissue is edematous and atypical. Some rodlet cells (black arrow) are observed. Granuloma presents a compact and thick layer of collagen with internal necrotic content surrounded by epithelioid cells (white arrows); H&E, bar scale = 10 µm. c. two well-defined granulomas with substantial internal necrotic content involved by fibrous tissue. A slight layer of MMCs aggregates close to the external wall of granuloma. TM, bar scale = 10 µm. d. MMCs aggregates both internally and externally to granuloma in the exocrine kidney. HE, bar scale = 10 µm.
Fig. 2 in Kidney anatomy, histology and histometric traits associated to renosomatic index in Gymnotus inaequilabiatus (Gymnotiformes: Gymnotidae)
Fig. 2. Cross-section of the head and exocrine kidney in Gymnotus inaequilabiatus. a. a transitional area between head (HE) and exocrine kidney (EX) drained by postcardinal vein (PCV). Lymphohematopoietic tissue is abundant in the head portion. MMCs are diffusely distributed in both portions. A thick fibrous capsule covers the organ (white arrow); HE, bar scale = 500 µm. b. the general aspect of the head kidney. Vascular sinusoids (white arrows) surrounding the lymphohematopoietic tissue enclosing the MMCs (black arrow); HE, bar scale = 200 µm. c. interstitial lymphohematopoietic tissue with MMCs deposits characterizes the exocrine kidney, in addition, the contoured tubules; renal corpuscle (white arrow); HE, bar scale = 200 µm. d. the exocrine kidney with a proximal convoluted tubule showing hyaline degeneration of the tubular epithelium often found in this species; HE, bar scale = 100 µm. e. exocrine kidney showing the corpuscle of Stannius (*). This structure is not lobulated, and is delimited by a fibrous capsule, and situated at the junction between head and exocrine portions; HE, bar scale = 500 µm. f. detail of junction between lymphohematopoietic tissue and corpuscle of Stannius in the head kidney. Fiber bundles subdivide both structures. Rodlet cells (white arrow), macrophages (M) and eosinophilic granulocytic cells (black arrow); granulocytic (G) and secretory cells (SC) internally fill the corpuscle; HE, bar scale = 50 µm.
Fig. 3 in Molecular assessment of Gymnotus spp. (Gymnotiformes: Gymnotidae) fishing used as live baitfish in the Tietê River, Brazil
Fig. 3. Agarose gel electrophoresis (3.0%) of NlaIII restriction fragments obtained from COI partial PCR amplification. Gymnotus cf. sylvius (1T13, 1T24, 1T20, 1T36, 2T29) and G. cf. cuia (2T13, 2T32 and 2T24). M- 100 bp molecular weight marker (Sinapse Inc). Numbers at fragments indicate estimated molecular weight.
Fig. 2 in Molecular assessment of Gymnotus spp. (Gymnotiformes: Gymnotidae) fishing used as live baitfish in the Tietê River, Brazil
Fig. 2. Neighbor-joining dendrogram of the COI partial sequences of Gymnotus spp. (1T13, 2T29, 1T14, 1T36, 2T26, 2T13, 2T32 and 2T24) collected in the Jacaré-Guaçu River, State of São Paulo, and obtained from GenBank, constructed from the distances of Kimura (K2P). The bootstrap values are indicated on the branches
FIGURE 5 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 5. Map of Colombia illustrating the type locality () of Gymnotus ardilai and 1: Bucaramanga city; 2: Pie de Cuesta; 3: Girón.
FIGURE 2. Gymnotus ardilai. Paratypes IAvHP 4001 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 2. Gymnotus ardilai. Paratypes IAvHP 4001, males, (A) 219.2 mm TL, (B) 329 mm TL. Lateral view.
FIGURE 2 in Feeding ecology of electric eel Electrophorus varii (Gymnotiformes: Gymnotidae) in the Curiaú River Basin, Eastern Amazon
FIGURE 2 | Variation in Stomach Repletion Index (RI) values (black spots) of Electrophorus varii in Curiaú River EPA Amapá, Brazil. A. Size class; and B. Season. The lower and upper bars of the boxplot represent 25 and 75 quartiles, respectively. The horizontal bar within each boxplot represents the mean RI value. The lower and upper vertical line represent the RI values amplitude.
FIGURE 4 in Organization of the cephalic lateral-line canals in Electrophorus varii de Santana, Wosiacki, Crampton, Sabaj, Dillman, Mendes-Júnior & Castro e Castro, 2019 (Gymnotiformes: Gymnotidae)
FIGURE 4 | Images of CT scan of the head of Electrophorus varii. A. dorsal and B. left lateral views of the cranium show the ossification of the lateral-line canals. The ossified segments of canals are marked by colors. Yellow: infraorbital canal; navy blue: mandibular canal; green: otic canal; purple: pre-opercular canal; pink: supraorbital canal; light blue: supratemporal canal; red: otic pit ossicles. ANG-AR: Angulo-articular; CLT: cleithrum; DT: dentary; ENT: entopterygoid; FR: frontal bone; HYO: Hyomandibular; IOP: interopercle; MET: mesethmoid; MTP: metapterygoid; OP: opercle; PAR: parietal; PMX: premaxila; POP: preopercle; PTO: pterotic; QU: quadrate; SP: sphenotic; SYM: sympletic. Specimen size = 82 cm TL.
FIGURE 1 in Organization of the cephalic lateral-line canals in Electrophorus varii de Santana, Wosiacki, Crampton, Sabaj, Dillman, Mendes-Júnior & Castro e Castro, 2019 (Gymnotiformes: Gymnotidae)
FIGURE 1 | Sampling areas (Adolpho Ducke Reserve and Purupuru Lake, Amazonas, Brazil) where individuals of Electrophorus varii were captured. The white stars represent the exact sampling spots.
FIGURE 3 in Organization of the cephalic lateral-line canals in Electrophorus varii de Santana, Wosiacki, Crampton, Sabaj, Dillman, Mendes-Júnior & Castro e Castro, 2019 (Gymnotiformes: Gymnotidae)
FIGURE 3 | Organization of the cephalic lateral-line canals in adult Electrophorus varii. Arrangement of all canals in A. dorsal, B. lateral and C. ventral views. Yellow: infraorbital canal; navy blue: mandibular canal; green: otic canal; purple: pre-opercular canal; pink: supraorbital canal; light blue: supratemporal canal; grey: posterior lateral-line canal of the trunk; red: otic pit (OP) between cephalic and trunk canals. The photographs are from a juvenile that completed the development and is morphologically similar to an adult. The drawings are from an individual of 148 cm TL.
FIGURE 2 in Organization of the cephalic lateral-line canals in Electrophorus varii de Santana, Wosiacki, Crampton, Sabaj, Dillman, Mendes-Júnior & Castro e Castro, 2019 (Gymnotiformes: Gymnotidae)
FIGURE 2 | Ontogenetic development of the lateral-line canals in larvae and juveniles of Electrophorus varii, in lateral and dorsal views. A. 1.9 cm TL; B. 2.5 cm TL; C. 3.0 cm TL; D. 5.0 cm TL; E. 9.0 cm TL; F. 38 cm TL. Types of dashes indicate the (1) shallow and short grooves on the skin; (2) deep grooves; (3) segments of grooves start enclosure; (4) pores of canals on the skin. Yellow: infraorbital canal; navy blue: mandibular canal; green: otic canal; purple: pre-opercular canal; pink: supraorbital canal; light blue: supratemporal canal; grey: posterior lateral-line canal of the trunk and; red: otic pit between cephalic and trunk canals. Arrows indicate short grooves of the presumptive infraorbital and mandibular canals.
Figure 1 in First record of Trichodina heterodentata (Ciliophora: Trichodinidae) in banded knifefish Gymnotus carapo (Gymnotidae) cultured in Brazil
Figure 1. Trichodina heterodentata collected from the gills of banded knifefish, Gymnotus carapo, farmed in Jataí, state of Goiás, Brazil. Stain: silver nitrate impregnation.
FIGURE 4 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 4. Lateral view of immature G. ardilai, 34 mm TL.
FIGURE 1. Gymnotus ardilai. Holotype IAvHP 3477 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 1. Gymnotus ardilai. Holotype IAvHP 3477 (CAR 05), female, 430 mm TL. Lateral view.
FIGURE 3 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 3. Head profiles of Gymnotus ardilai. (A) Holotype, (B) Paratypes.
Supplementary material 1 from: Scacchetti P, Pansonato-Alves J, Utsunomia R, Oliveira C, Foresti F (2011) Karyotypic diversity in four species of the genus Gymnotus Linnaeus, 1758 (Teleostei, Gymnotiformes, Gymnotidae): physical mapping of ribosomal genes and telomeric sequences. Comparative Cytogenetics 5(3): 223-235. https://doi.org/10.3897/compcytogen.v5i3.1375
Nexus file of aligned COI and COII nucleotide sequences.
FIGURE 5 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 5. Map of Colombia illustrating the type locality () of Gymnotus ardilai and 1: Bucaramanga city; 2: Pie de Cuesta; 3: Girón.
FIGURE 2. Gymnotus ardilai. Paratypes IAvHP 4001 in Gymnotus ardilai: a new species of Neotropical electric fish (Ostariophysi: Gymnotidae) from the Rio Magdalena Basin of Colombia
FIGURE 2. Gymnotus ardilai. Paratypes IAvHP 4001, males, (A) 219.2 mm TL, (B) 329 mm TL. Lateral view.
FIGURE 6 in Gymnotus refugio, a new and endangered species of electric fish of the Gymnotus pantherinus species-group from southern Brazil (Gymnotiformes: Gymnotidae)
FIGURE 6. Comparison between linear regressions of caudal filament length versus total length (TL) for Gymnotus pantherinus and G. refugio.
FIGURE 7 in Gymnotus refugio, a new and endangered species of electric fish of the Gymnotus pantherinus species-group from southern Brazil (Gymnotiformes: Gymnotidae)
FIGURE 7. Comparison between linear regressions of gape width versus head length (HL) for Gymnotus pantherinus and G. refugio.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.