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FIGURE 1 in Catalogue of living crinoids (Echinodermata: Crinoidea) from Brazil
FIGURE 1. Map of South America showing the coastal states of Brazil and oceanic islands. (AP) Amapá; (PA) Pará; (MA) Maranhão; (PI) Piauí; (CE) Ceará; (RN) Rio Grande do Norte; (PB) Paraíba; (PE) Pernambuco; (AL) Alagoas; (SE) Sergipe; (BA) Bahia; (ES) Espírito Santo; (RJ) Rio de Janeiro; (SP) São Paulo; (PR) Paraná; (SC) Santa Catarina; (RG) Rio Grande do Sul; (AR) Atol das Rocas; (FN) Fernando de Noronha Archipelago; (SS) São Pedro e São Paulo Archipelago; (TR) Trindade Island.
FIGURES 1–4. Thyasira methanophila new species. Holotype. MNHNCL 201646 Live collected specimen. Figs 1 & 4 in New species of Thyasiridae from a methane seepage area off Concepción, Chile
FIGURES 1–4. Thyasira methanophila new species. Holotype. MNHNCL 201646 Live collected specimen. Figs 1 & 4 external and internal of right valve; Figs 2 & 3 external and internal of left valve.
FIGURE 4 in Draconema brasiliensis and Draconema fluminensis (Chromadorida, Draconematidae): two new species of free living nematodes from a rocky shore affected by upwelling on the Brazilian coast
FIGURE 4. Male holotype of Draconema fluminensis sp.n. —A. Whole body, B. Pharyngeal region, C. Cloacal region with copulatory apparatus, D. Posterior body region with posterior adhesion tubes, E. Nonannulated punctuated tail region.
FIGURE 3 in Draconema brasiliensis and Draconema fluminensis (Chromadorida, Draconematidae): two new species of free living nematodes from a rocky shore affected by upwelling on the Brazilian coast
FIGURE 3. Female allotype of Draconema brasiliensis sp.n. — A. Whole body, B. Pharyngeal region, C. Midbody region with reproductive system, D. Vulva region, E. Posterior adhesion tubes.
FIGURE 2 in Draconema brasiliensis and Draconema fluminensis (Chromadorida, Draconematidae): two new species of free living nematodes from a rocky shore affected by upwelling on the Brazilian coast
FIGURE 2. Male holotype of Draconema brasiliensis sp.n. — A. Whole body, B. Pharyngeal region, C. Cloacal region with copulatory apparatus, D. Posterior body region, E. Posterior adhesion tubes, F. Nonannulated punctuated tail region.
FIGURE 5 in Draconema brasiliensis and Draconema fluminensis (Chromadorida, Draconematidae): two new species of free living nematodes from a rocky shore affected by upwelling on the Brazilian coast
FIGURE 5. Female allotype of Draconema fluminensis sp.n. — A. Whole body, B. Pharyngeal region, C. Midbody region with reproductive system, D. Vulva region, E. Posterior adhesion tubes.
FIGURE 19. Live coloration. A–C in A review of the genus Micropagurus (Crustacea Decapoda Anomura Paguridae)
FIGURE 19. Live coloration. A–C: Micropagurus polynesiensis (Nobili, 1906); D: Micropagurus acantholepis (Stimpson, 1858). Photos A–C by © Hiroyuki Shidara and D by ©Michael Marmach and Museum Victoria.
FIGURE 4 in Free-living Platyhelminthes of the Pacaya-Samiria National Reserve, a Peruvian Amazon floodplain
FIGURE 4. Microphotograps of live triclads. a: Girardia cf. tigrina, b: Phagocata sp. Photographed by Daniel H. Shain.
FIGURE 3 in Free-living Platyhelminthes of the Pacaya-Samiria National Reserve, a Peruvian Amazon floodplain
FIGURE 3. Dorsal view of live specimens. a: Bothromesostoma evelinae. b: Mesostoma ehrenbergi. c: Olisthanella truncula. d: Gyratrix hermaphroditus. Scale bars a–c: 200 µm, scale bar d: 100 µm.
FIGURE 2 in Free-living Platyhelminthes of the Pacaya-Samiria National Reserve, a Peruvian Amazon floodplain
FIGURE 2. Microphotographs of Temnocephala lutzi. a: whole mount, scale bar 400 µm, b: detail of the stylet, scale bar 100 µm.
FIGURE 1 in Free-living Platyhelminthes of the Pacaya-Samiria National Reserve, a Peruvian Amazon floodplain
FIGURE 1. Air photograph from the research area. The white spots are the sampled sites (numbers correspond to the sampling localities mentioned in the Material & Methods).
Live imaging and biophysical modeling support a button-based mechanism of somatic homolog pairing in Drosophila
<p></p><p>3D eukaryotic genome organization provides the structural basis for gene regulation. In Drosophila melanogaster, genome folding is characterized by somatic homolog pairing, where homologous chromosomes are intimately paired from end to end; however, how homologs identify one another and pair has remained mysterious. Recently, this process has been proposed to be driven by specifically interacting 'buttons' encoded along chromosomes. Here, we turned this hypothesis into a quantitative biophysical model to demonstrate that a button-based mechanism can lead to chromosome-wide pairing. We tested our model using live-imaging measurements of chromosomal loci tagged with the MS2 and PP7 nascent RNA labeling systems. We show solid agreement between model predictions and experiments in the pairing dynamics of individual homologous loci. Our results strongly support a button-based mechanism of somatic homolog pairing in Drosophila and provide a theoretical framework for revealing the molecular identity and regulation of buttons.</p><p></p>
Data from: Superfetation reduces the negative effects of pregnancy on the fast-start escape performance in live-bearing fish
<p>Superfetation, the ability to simultaneously carry multiple litters of different developmental stages <i>in utero</i>, is a reproductive strategy that evolved repeatedly in viviparous animal lineages. The evolution of superfetation is hypothesized to reduce the reproductive burden and, consequently, improve the locomotor performance of the female during pregnancy. Here, we apply new computer-vision based techniques to study changes in body shape and three-dimensional fast-start escape performance during pregnancy in three livebearing fishes (family Poeciliidae) that exhibit different levels of superfetation. We found that superfetation correlates with a reduced abdominal distension and a more slender female body shape just before parturition. We further found that body slenderness positively correlates with maximal speeds, curvature amplitude and curvature rate, implying that superfetation improves the fast-start escape performance. Collectively, our study suggests that superfetation may have evolved in performance-demanding (e.g. high flow or high predation) environments to reduce the locomotor cost of pregnancy.</p>
FIGURES 13–14. Vasignyella ovicellata n in First record of a living ditaxiporine catenicellid in the Atlantic, with a description of Vasignyella ovicellata n. sp. (Bryozoa)
FIGURES 13–14. Vasignyella ovicellata n. sp. 13, Autozooid, drawn from a specimen seen in transparency; note the small internal spots in the calcification, with minute suture lines between the gymnocystal pores. 14, Multizooidal internode with six zooids, four ovicellate.
FIGURES 11–12. Vasignyella ovicellata n in First record of a living ditaxiporine catenicellid in the Atlantic, with a description of Vasignyella ovicellata n. sp. (Bryozoa)
FIGURES 11–12. Vasignyella ovicellata n. sp. in transparency. 11, Close-up in lateral wall of autozooids, showing gymnocystal pores (p), small internal spots in calcification (sp), and mural pore-chambers (pc). 12, Immature multizooidal internode with only three zooids, the first ovicelled.
FIGURES 8–10 in First record of a living ditaxiporine catenicellid in the Atlantic, with a description of Vasignyella ovicellata n. sp. (Bryozoa)
FIGURES 8–10 (SEM). Multizooidal fertile internode of Vasignyella ovicellata n. sp. 8, Entire ovicellate internode; note the distalmost zooids lacking ovicells. 9, Frontal view of the two proximal zooids with ovicells. 10, An ovicelled zooid in lateral view, showing zooidal flexure.
FIGURES 2–7 in First record of a living ditaxiporine catenicellid in the Atlantic, with a description of Vasignyella ovicellata n. sp. (Bryozoa)
FIGURES 2–7 (SEM). Unizooidal internodes of Vasignyella ovicellata n. sp. 2, Part of branching colony. 3, Autozooid in frontal view; note the row of frontal pore-chambers in the caudal part of the zooid. 4, Autozooid in lateral view; note the row of lateral pore-chambers, two in the cauda and four in the dilatation. 5, Close-up of dilatation, showing frontal gymnocystal pores and the orifice with its proximal rim of paired vestigial costae; note also the pore-chambers between the avicularia and suboral costae. 6, Distal view of orifice; note the pair of small condyles and the pore-chambers behind the avicularian rostra. 7, Close-up of avicularium with acute rostrum and a pair of associated pore-chambers.
FIGURE 1 in First record of a living ditaxiporine catenicellid in the Atlantic, with a description of Vasignyella ovicellata n. sp. (Bryozoa)
FIGURE 1. Occurrence of Vasignyella ovicellata n. sp. in Alagoas State, northwestern Brazil. Legend: a, coral reefs of Piscina dos Amores; b, coral reefs of Pajuçara; c, Sobral sewer outfall; d, Francês sandstone banks.
FIGURES 41–43. Mesabolivar camussi n in Three new ground living pholcid species (Araneae: Pholcidae) from Parque Estadual da Cantareira, São Paulo, São Paulo, Brazil
FIGURES 41–43. Mesabolivar camussi n. sp. scanning electron micrographs. 41. Male chelicerae, frontal view; 42. Tip of procursus, retrolateral view, 43. Epigynum, anterior view. Scale lines: figs. 41–42: 0.25 mm; fig. 43: 20 µm
FIGURES 1–14. Mesabolivar cantharus n in Three new ground living pholcid species (Araneae: Pholcidae) from Parque Estadual da Cantareira, São Paulo, São Paulo, Brazil
FIGURES 1–14. Mesabolivar cantharus n. sp. 1–2. Male, dorsal and lateral views; 3–5. Chelicerae, lateral, dorsal, and frontal views; 6. Left palp, retrolateral; 7. Left procursus, prolateral; 8. Tip of left procursus, dorsal view; 9–10. Left bulb, prolateral and retrolateral views; 11–14. Epigynum, ventral, anterior, lateral, and dorsal views. Scale lines: 0.5 mm.
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)
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.