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901 results for “Amazon Basin”
FIGURE 11 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 11. Head close-up, dorsal view, male juveniles showing the difference in soft, fleshy tentacles. A) Ancistrus shuar, MECN-DP-1631, 50.85 mm SL. B) Ancistrus malacops, MEPN 17987, 45.8 mm SL.
FIGURE 10 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 10. Ancistrus malacops juveniles, head close-up, dorsal view, showing the difference in naked surface on snout, between sexes, and the similar arrangement of soft, fleshy tentacles on edge. MEPN 10249, A) Female, 47.3 mm SL. B) Male, 46.3 mm SL.
FIGURE 8 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 8. Map of Ecuador showing the geographical distribution of the species. A. shuar, star. A. alga, square. A. clementinae, circle. A. malacops, triangle. Symbols may represent more than one lot.
FIGURE 6. Ancistrus clementinae, MEPN 5996, 94.6 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 6. Ancistrus clementinae, MEPN 5996, 94.6 mm SL, male. From top to bottom, lateral, dorsal, and ventral view.
FIGURE 5. Ancistrus alga, MEPN 14853, 115.1 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 5. Ancistrus alga, MEPN 14853, 115.1 mm SL, male. From top to bottom, lateral, dorsal, and ventral view.
FIGURE 9. Chaetostomus hoplogenys, BMNH 1864.1.21.85 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 9. Chaetostomus hoplogenys, BMNH 1864.1.21.85, Syntype, SL, not reported. From top to bottom dorsal, left lateral, ventral views. Photographed by: Claudio Zawadzki. Catalog of Fishes gives data for syntypes as BMNH 1849.11.8.89- 91 (3).
FIGURE 2 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 2. Females of Ancistrus species, lateral view. From top to bottom: A. shuar, MEPN 17983, 93.9 mm SL. A. alga, MEPN 15169, 160.9 mm SL. A. clementinae, MEPN 5996, 100.1 mm SL. and A. malacops, MEPN 7804, 93.4 mm SL.
FIGURE 3 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 3. Ventral view of the head of females to show the presence (arrows) or absence of soft, fleshy tentacles on snout. A) A. clementinae, MEPN 5996, 100.1 mm SL. B) A. malacops, MEPN 7804, 93.4 mm SL. C) A. alga, MEPN 15169, 160.9 mm SL, D) A. shuar, MEPN 17983, 93.9 mm SL.
FIGURE 7. Ancistrus malacops, MEPN 14705, 117.8 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 7. Ancistrus malacops, MEPN 14705, 117.8 mm SL, male. From top to bottom, lateral, dorsal and ventral view.
FIGURE 1. Ancistrus shuar, MEPN 17984, 116.7 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 1. Ancistrus shuar, MEPN 17984, 116.7 mm SL, male, holotype. From top to bottom, lateral, dorsal, and ventral view.
FIGURE 4 in Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin
FIGURE 4. Ancistrus shuar, MECN-DP-1637, 96.5 mm SL, male, paratype when alive (Photo courtesy Jorge Brito).
FIGURE 2. Hemigrammus kuroobi LBP 7074 in A new species of Hemigrammus Gill 1858 (Characiformes: Characidae) from the upper Rio Negro, Amazon basin, Brazil
FIGURE 2. Hemigrammus kuroobi LBP 7074, paratype, 44.8 mm SL: (a) left maxilla (medial view); (b) left premaxilla (medial view); (c) left dentary (medial view).
FIGURE 4 in A new species of Hemigrammus Gill 1858 (Characiformes: Characidae) from the upper Rio Negro, Amazon basin, Brazil
FIGURE 4. Hemigrammus kuroobi, paratypes. (a) LBP 7074, 12.2 mm SL; (b) LBP 7074, 14.4 mm SL; (c) LBP 7074, 17.4 mm SL; (d) LBP 7074, 19.2 mm SL; (e) LBP 7074, 26.9 mm SL; (f) LBP 7074, 30.0 mm SL; (g) MNRJ 51330, 33.8 mm SL; (h) MNRJ 51330, 36.0 mm SL; (i) ZUEC 17026, 38.1 mm SL; (j) ZUEC 17026, 40.9 mm SL; (k) INPA 57937, 45.0 mm SL; (l) LBP 7074, 48.0 mm SL.
FIGURE 1 in A new species of Hemigrammus Gill 1858 (Characiformes: Characidae) from the upper Rio Negro, Amazon basin, Brazil
FIGURE 1. Hemigrammus kuroobi, new species: (a) holotype, MZUSP 123957, 45.0 mm SL; (b) paratype, MNRJ 51330, 36.0 mm SL, male; Brazil, Amazonas, tributary of Rio Miuá, upper Rio Negro.
FIGURE 3 in A new species of Hemigrammus Gill 1858 (Characiformes: Characidae) from the upper Rio Negro, Amazon basin, Brazil
FIGURE 3. Hemigrammus kuroobi, paratype, LBP 7074, 46.3 mm SL, showing light area between humeral blotch and midlateral stripe (arrow).
FIGURE 2 in Sternarchorhynchus curumim (Gymnotiformes: Apteronotidae), a new species of tube-snouted ghost electric knifefish from the low- land Amazon basin, Brazil
FIGURE 2. Electric Organ Discharge (EOD) waveform (left) and Fourier Power Spectrum (right) of Sternarchorhynchus curumim n. sp., MCP 38304 (WGRC 50.231099, female). EOD plotted with headpositivity upwards, voltage on the vertical axis (dashed line = 0 volts) and time on the horizontal axis (scale bar = 1 msec). Power spectrum computed by 65536 point FastFourier Transform from a 3 sec digital recording with a sample rate of 96 kHz. The Peak Power Frequency (PPF), which is equivalent to the fundamental frequency, is scaled to 0 dB.
FIGURE 1 in Sternarchorhynchus curumim (Gymnotiformes: Apteronotidae), a new species of tube-snouted ghost electric knifefish from the low- land Amazon basin, Brazil
FIGURE 1. Photographs of preserved specimens of Sternarchorhynchus curumim n. sp.: A: holotype, MCP 38304, mature female showing lateral and dorsal views, and close up of head. B: head of paratype, MCP 38305, mature male. Scale bars = 10 mm. Note the slightly wider snout in the male.
FIGURE 18 in Milenascopia gen. nov. (Orthoptera: Proscopiidae) from the Brazilian Amazon Basin and a pictorial key to Proscopiini genera
FIGURE 18. Pictorial key for males of Proscopiini, part 4. All drawings, with the exception of the top-right one over "step 7", are modified from Bentos-Pereira (2006b).
FIGURE 17 in Milenascopia gen. nov. (Orthoptera: Proscopiidae) from the Brazilian Amazon Basin and a pictorial key to Proscopiini genera
FIGURE 17. Pictorial key for males of Proscopiini, part 3. All drawings, with the exception of the one over "step 5", are modified from Bentos-Pereira (2006b).
FIGURE 13 in Milenascopia gen. nov. (Orthoptera: Proscopiidae) from the Brazilian Amazon Basin and a pictorial key to Proscopiini genera
FIGURE 13. Milenascopia tenuis gen. nov., sp. nov. 3 body parts. A) prosternum, ventral view; B) meso- and metasternum, ventral view; C) tergites 9, 10 and pallium, dorsal view; D) tergites 8–10, pallium and cercus, dorsal view; E) sternite 8–9 (subgenital plate), ventral view.
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)
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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.