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737 results for “central Africa”
Data from: New evidence for hybrid zones of forest and savanna elephants in Central and West Africa
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Data from: A curious new species of Xenostegia (Convolvulaceae) from Central Africa, with remarks on the phylogeny of the genus
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Data from: Phylogeography of the reed frog Hyperolius castaneus (Anura: Hyperoliidae) from the Albertine Rift of Central Africa: implications for taxonomy, biogeography and conservation
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Data from: Natural Wolbachia infections are common in the major malaria vectors in Central Africa
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Genotyping by sequencing data of five legume tree species widespread in the rainforests of West and Central Africa
<p>Although today the forest cover is continuous in Central Africa this may have not always been the case, as the scarce fossil record in this region suggests that arid conditions might have significantly reduced tree density during the Ice Ages. Our aim was to investigate whether the dry ice-age periods left a genetic signature on tree species that can be used to infer the date of the past fragmentation of the rainforest. We sequenced reduced representation libraries of 182 samples representing five widespread Legume trees and seven outgroups. Phylogenetic analyses identified an early divergent lineage for all species in West Africa (Upper Guinea), and two clades in Central Africa: Lower Guinea-North and Lower Guinea-South. As the structure separating the Northern and Southern clades -congruent across species- cannot be explained by geographic barriers, we tested other hypotheses with demographic model testing using ∂a∂I. The best estimates indicate that the two clades split between the Upper Pliocene and the Pleistocene, a date compatible with forest fragmentation driven by ice-age climatic oscillations. Furthermore, we found remarkably older split dates for the shade-tolerant tree species with non-assisted seed dispersal than for light-demanding species with long-distance wind dispersal. Different recolonisation abilities after recurrent cycles of forest fragmentation seem to explain why species with long-distance dispersal show more recent genetic admixture between the two clades than species with limited seed dispersal. Despite their old history, our results depict the African rainforests as a dynamic biome where tree species have expanded relatively recently after the last glaciation.</p>
FIGURE 7 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 7. Map showing distributions of M. armatus (), M. emarginatus () and M. hirsutus ().
FIGURE 18 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 18. Scatterplot of snout length (SNL) against standard length for M. batesii and M. nasutus.
FIGURE 5 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 5. Map showing the distribution of M. batesii (), M. laevigatus () and M. notatus ().
FIGURE 13 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 13. Map showing distributions of M. nannoculus (), M. nasutus (˖) and M. vigilis ().
FIGURE 16 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 16. Microsynodontis vigilis, holotype, CU 87039, 62.0 mm SL; Gabon: Ogooué River drainage.
FIGURE 6 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 6. Microsynodontis armatus, holotype, CU 89392, 27.4 mm SL; Gabon: Ivindo River drainage.
FIGURE 10 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 10. Microsynodontis hirsutus, holotype, CU 87040, 68.0 mm SL; Gabon: Ntem River drainage.
FIGURE 14 in The Microsynodontis (Teleostei: Siluriformes: Mochokidae) of the lower Guinea region, west central Africa, with the description of eight new species
FIGURE 14. Microsynodontis nasutus, holotype, CU 89394, 36.5 mm SL; Gabon: Okano River drainage.
FIGURE 14 in Review of the genus Petropedetes Reichenow, 1874 in Central Africa with the description of three new species (Amphibia: Anura: Petropedetidae)
FIGURE 14. Typical dorsal pattern in Petropedetes juliawurstnerae sp. nov. (ZFMK 68170):
FIGURE 4. Sarotherodon knauerae. A. ZSM 29924 in Two new sympatric Sarotherodon species (Pisces: Cichlidae) endemic to Lake Ejagham, Cameroon, west-central Africa, with comments on the Sarotherodon galilaeus species complex
FIGURE 4. Sarotherodon knauerae. A. ZSM 29924, male (holotype). B. ZSM 29926, female (paratype).
FIGURE 5. Anterior squamation, A. Sarotherodon knauerae, B in Two new sympatric Sarotherodon species (Pisces: Cichlidae) endemic to Lake Ejagham, Cameroon, west-central Africa, with comments on the Sarotherodon galilaeus species complex
FIGURE 5. Anterior squamation, A. Sarotherodon knauerae, B. Sarotherodon lamprechti.
FIGURE 13 in Discovery of a new species of Caloptilia (Lepidoptera: Gracillariidae) from east and central Africa with its suggested associated host (Gentianales: Rubiaceae) and natural enemies (Hymenoptera: Eulophidae)
FIGURE 13. Anterior tentorial pit. Scale bar as indicated.
FIGURE 5 in A new species of Trachylepis (Squamata: Scincidae) from Central Africa and a key to the Trachylepis of West and Central Africa
FIGURE 5. Head scalation of Trachylepis gonwouoi sp. nov. holotype CAS 261092.
FIGURE 3 in A new small barb (Cyprininae: Smiliogastrini) from the Louesse, Lekoumou (upper Niari basin), and Djoulou (upper Ogowe basin) rivers in the Republic of Congo, west-central Africa
FIGURE 3. Isolated infraorbital series: A, E. walshae (AMNH 266860); B, E. camptacanthus (AMNH 256416); C, E. jae (AMNH 253857). Anterior vertebrae, dorsal fin, and associated supraneural elements; D, E. walshae (AMNH 266862); E, E. catenarius (AMNH 266868).
FIGURE 2 in A new small barb (Cyprininae: Smiliogastrini) from the Louesse, Lekoumou (upper Niari basin), and Djoulou (upper Ogowe basin) rivers in the Republic of Congo, west-central Africa
FIGURE 2. Enteromius walshae, new species: A, AMNH 266856, holotype (female) in preservation; B, individual from the same population in life. C, AMNH 266858, paratype (male) in preservation; D, individual from same population in life; E, digestive tract, after removal of liver and adherent tissues (approximately to scale).
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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.