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1,015 results for “West Africa”
FIGURE 4 in New deepsea species of Macrostylidae (Asellota: Isopoda: Malacostraca) from the Angola Basin off Namibia, South West Africa
FIGURE 4. Macrostylis robusta sp. nov., paratype Ψ (3.1.mm), antennule, antenna, left mandible, maxilliped, pereopods 1, 2, 4, 5.
FIGURE 3 in New deepsea species of Macrostylidae (Asellota: Isopoda: Malacostraca) from the Angola Basin off Namibia, South West Africa
FIGURE 3. Macrostylis robusta sp. nov., holotype ɗ (2.3 mm), uropod (left margin, Pleopods 1–3, upper row; paratype Ψ (3.1.mm), lower uropod, pleopods 2–5.
FIGURE 1 in New deepsea species of Macrostylidae (Asellota: Isopoda: Malacostraca) from the Angola Basin off Namibia, South West Africa
FIGURE 1. Macrostylis robusta sp. nov., holotype ɗ (2.3 mm), dorsal view, antennule, antenna, hypopharynx, left mandible, maxillule, maxilliped, pereopods 1, 7.
FIGURES 2–7. Aethaloptera dispar Brauer, 1875 in First report of Aethaloptera dispar Brauer 1875 (Trichoptera: Hydropsychidae) from IleIfe, southwestern Nigeria, West Africa
FIGURES 2–7. Aethaloptera dispar Brauer, 1875 (larva and adult female). 2, Anterior region of head of larva, dorsal view. 3, Larval pronotum, dorsal view. 4, Left foreleg of larva, dorsal view. 5, Tibia and tarsus of midleg of larva, dorsal view. 6, IXth sternite and proleg of larva, ventral view. 7, Adult female midleg showing preapical and apical tibial spurs.
FIGURE 9 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 9. Waveforms and power spectra of EODs from Stomatorhinus walkeri (A – D), S. ater (E, F) and S. patrizii (G, H) on the same time scale as those shown in Fig. 5. EOD waveforms are centered about the largest headnegative peak, normalized to the same peaktopeak height and plotted with head positivity upward for each trace. Power spectra are normalized so that the peak energy is adjusted to 0 dB. Individual specimen numbers are indicated beneath waveforms; F = female, M = male.
FIGURE 7 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 7. Selected morphometric ratios of S. ivindoensis n. sp. compared to those in S. fuliginosus (A) and S. polli (B). IO = interorbital distance, HW = head width, CPD = caudal peduncle depth measured at terminus of anal fin, CPL = caudal peduncle length, E = eye diameter, HL = head length.
FIGURE 8 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 8. Scores from types of S. ivindoensis n. sp. and five other Stomatorhinus species on the second and third factors of a principal components analysis of the covariance matrix calculated from 24 logtransformed morphometric measures. Twelve nontype specimens of S. walkeri and one nontype of S. polli included. Variables loading most heavily on the second principal component are caudal peduncle depth, interorbital distance and internostril distance. Variables loading most heavily on the third principal component are eye diameter, postorbital head length and caudal
FIGURE 6 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 6. Species of Stomatorhinus to which Stomatorhinus ivindoensis n. sp. is closely compared in study: (A) S. walkeri syntype BMNH 1867.5. 3.16, 85.6 mm SL; (B) S. walkeri live specimen no. 2880, CU 80237, 95 mm SL; (C) S. fuliginosus syntype MRAC 6652, 37.7 mm SL; (D) S. fuliginosus syntype MRAC 6648, 33.5 mm SL; (E) S. polli paratype MRAC 138993, 61.3 mm SL; (F) S. polli paratype MRAC 138977, 58.7 mm SL.
FIGURE 5 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 5. EOD waveforms (left) and power spectra (right) for Stomatorhinus ivindoensis n. sp. The holotype of S. ivindoensis, a male, is shown in A and B. Peaks are numbered in order from P 0 to P 3. EOD waveforms are centered about the largest headnegative peak and plotted with head positivity upward. Power spectra are normalized so that the peak energy is adjusted to 0 dB. EODs of reproductive males (E, F) are longer in duration and have a lower peak power frequency than those of females (C, D). Individual specimen numbers are indicated beneath waveforms; F = female, M = male, H = holotype. Time base = 0.1 millisecond.
FIGURE 4 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 4. Typical forest creek habitat of Stomatorhinus ivindoensis n. sp.: upper " Balé Creek " within the Ipassa Plateau Reserve near Makokou, Gabon.
FIGURE 3 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 3. Collection sites of Stomatorhinus ivindoensis n. sp. (circles) and S. walkeri (triangles) in the Ivindo and Ogooué River basins of Gabon and the KouilouNiari basin of the Republic of Congo. Shaded areas delimit the boundary of the Lower Guinea ichthyofaunal province of West Central Africa.
FIGURE 1 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 1. Drawing of Stomatorhinus ivindoensis n. sp. holotype, 43.8 mm SL. Drawn by Vera Ming Wong.
FIGURE 2 in A new Stomatorhinus (Osteoglossomorpha: Mormyridae) from the Ivindo River, Gabon, West Central Africa
FIGURE 2. Photograph (A) and radiograph (B) of preserved holotype of Stomatorhinus ivindoensis n. sp., CU 85157, 43.8 mm SL, male; (C) live paratype specimen no. 1004, CU 75437, 40.8 mm SL, male; (D) preserved paratype, CU 85465, 52.2 mm SL, female.
FIGURE 11 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 11. Microsynodontis laevigatus, holotype, CU 89407, 30.8 mm SL; Gabon: Ivindo River drainage.
FIGURE 8 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 8. Microsynodontis emarginatus, holotype, CU 89393, 33.4 mm SL; Gabon: Ogooué River drainage.
FIGURE 3 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 3. Magnified view of the right ventrorbital region, showing tubercle morphology in mature males of: a. M. hirsutus, holotype, CU 87040, 62.0 mm SL; and b. all other Microsynodontis (represented by M. batesii, RMNH 34859, 74.8 mm SL). Both photographs were taken under identical magnification (50X). Scale bar indicates 0.5 mm.
FIGURE 15 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 15. Microsynodontis notatus, holotype, MRAC 8051P839, 41.0 mm SL; Gabon: Ogooué River drainage.
FIGURE 1 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 1. Microsynodontis batesii: a. adult coloration, RMNH 34859, 74.8 mm SL, Cameroon: Lobé River; b. live coloration (fish from southern Cameroon, ca. 65 mm SL, not preserved), photograph courtesy of Erwin Schraml; c. juvenile coloration MRAC 93108P0657, 22.8 mm SL; Cameroon: Ntem River drainage.
FIGURE 5. Pelvicachromis signatus, holotype. ZMA 109.959 in cichlid species (Teleostei, Perciformes) from Guinea, West Africa
FIGURE 5. Pelvicachromis signatus, holotype. ZMA 109.959, male, 72.3 mm SL; Guinea: Kolente basin, Bandi River, route Kangasili – Sougeta.
FIGURE 7 in cichlid species (Teleostei, Perciformes) from Guinea, West Africa
FIGURE 7. Pelvicachromis signatus, female, aquarium specimen, not preserved, Guinea: Kolente region.
ScienceDex guides
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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.