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.
279
datasets available to search
ShareScore release 0.9.0
Dataset results
279 results for “Historical biogeography”
FIGURES 28 30 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 28 30. Mouthparts of first instar Crozetia seguyi larvae. 28. Labral fan. Scale bar = 0.02 mm. 29. Larval hypostoma. Scale bar = 0.02 mm. 30. Larval mandibles. Scale bar = 0.02 mm. Abbreviations: lb labral fan; hyps hypostoma; mnd mandible.
FIGURE 3 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURE 3. Rivière du Camp, Possession Island, Crozet Islands, 1979. A typical habitat of Crozetia larvae. Pic du Mascarin (alt. 934 m) is in the background. (Courtesy, L. Davies).
FIGURE 2 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURE 2. Islands of the Crozet Archipelago. Bathymetric contours in meters. (Adapted from Boudon and Nougier 1982).
FIGURES 15 - 19. Crozetia. 15 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 15 - 19. Crozetia. 15. Cr. crozetensis, male paratype wing. Scale bar = 0.5 mm. 16. Cr. seguyi, higher magnification of male wing base. Scale bar = 0.5 mm. 17. Cr. seguyi, SEM of last instar larval head, frontal view. Scale bar = 0.1 mm. 18. Cr. crozetensis, LM of last instar larval head, dorsal view. Scale bar = 0.1 mm. 19. Cr. seguyi, LM of last instar larval head, dorsal view. Scale bar = 0.1 mm. Abbreviations: ant - antenna; ca - cephalic apotome; lf - labral fan; hyps - hypostoma; mnd - mandible; mx - maxilla; mxp - maxillary palpus.
FIGURES 13 - 14. Crozetia pupae. Left lateral views. 13 in Crozetia Davies (Diptera: Simuliidae): redescription of Cr. crozetensis, Cr. seguyi, number of larval instars, phylogenetic relationships and historical biogeography
FIGURES 13 - 14. Crozetia pupae. Left lateral views. 13. Cr. crozetensis. 14. Cr. seguyi. Note rudimentary cocoon on posterior. Scale bar = 1.0 mm.
Fig. 1 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 1. Hypotheses for the current distribution of Thyrsophorini. A. Dispersal of Thyrsopsocopsis Mockford, 2004 from the Neotropics. B. Vicariance, as a consequence of the population split, occurred in the hypothesized most recent common ancestor of Thyrsophorini and Cycetini. C. Parallel evolution between the Neotropical and Asian lineages.
Fig. 4 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 4. Parsimony based reconstruction of Thyrsophorini historical biogeography. A. Parsimony based ancestral reconstruction implemented in Mesquite 3.04. B. S-DIVA biogeographical reconstruction.
Fig. 3 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 3. Generic-level cladogram derived from parsimony analysis of the morphological dataset based on a heuristic search with 1000 replicates (L = 127, CI = 40, Ri = 59), followed by TBR branch swapping, with character optimizations, symmetric resampling (*0.33), Bremmer support (*greater than 0.33 for the current dataset) and relative bootstrap (*greater than 70%). Circles represent character optimizations: ○ = unique changes; ● = homoplasic characters.
Fig. 2 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 2. Thyrsopsocopsis amazonicus sp. nov., ♂, holotype. A. Front view of head. B. Paraprocts, epiproct and clunium. C. Forewing. D. Hindwing. E. Phallosome. F. Hypandrium. Scales in mm.
Fig. 7 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 7. Morphological homology of the hypandrial tubercles between the Neotropical and Oriental species. A. T. amazonicus sp. nov. B. T. thorntoni Mockford, 2004. Anterior –A and –P axis indicated on left. Scales in mm.
Fig. 5 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 5. Bayesian algorithms based reconstruction of the Thyrsophorini biogeography. A. Biogeographic regions considered in the analyses: Blue: Neotropics (A), purple: Oriental (B), Cream: Nearctic (C), Orange: Paleartic (D), Green: Australasia (E). B. Reconstructed distribution using Bayesian Binary MCMC (BBM).
Fig. 6 in Historical biogeography of Thyrsophorini psocids and description of a new neotropical species of Thyrsopsocopsis (Psocodea: Psocomorpha: Psocidae)
Fig. 6. Major biogeographical events occurred in Thyrsophorini (left) in accordance to the consensus reconstruction between BBM and S-DIVA analyses (right). Significant reconstructions indicated with *. I. Vicariance of the most recent common ancestor between Longivalvus Li, 1993 and Clematoscenea Enderlein, 1907. II. Allopatric speciation in the MRCA of Sundapsocus Smithers, 1995 and Cervopsocus New, 1978. III. Dispersal event occurred in Thyrsopsocopsis Mockford, 2004.
Investigating historical drivers of latitudinal gradients in polyploid plant biogeography: A multi-clade perspective
<p><em>Premise of the Study</em></p> <p>The proportion of polyploid plants in a community increases with latitude, and different hypotheses have been proposed about which factors drive this pattern. Here, we aim to understand the historical causes of the latitudinal polyploidy gradient using a combination of ancestral state reconstruction methods. Specifically, we assess whether (1) polyploidization enables movement to higher latitudes (i.e., polyploidization precedes occurrences in higher latitudes) or (2) higher latitudes facilitate polyploidization (i.e., occurrence in higher latitudes precedes polyploidization).</p> <p><em>Methods</em></p> <p>We reconstruct the ploidy states and ancestral niches of 1,032 angiosperm species at four paleoclimatic time slices ranging from 3.3 million years ago to the present, comprising taxa from four well-represented clades: Onagraceae, Primulaceae, <em>Solanum</em> (Solanaceae), and Pooideae (Poaceae). We use ancestral niche reconstruction models alongside a customized discrete character evolution model to allow reconstruction of states at specific time slices. Patterns of latitudinal movement are reconstructed and compared in relation to inferred ploidy shifts.</p> <p><em>Key Results</em></p> <p>We find that no single hypothesis applies equally well across all analyzed clades. While significant differences in median latitudinal occurrence were detected in the largest clade, Poaceae, no significant differences were detected in latitudinal movement in any clade.</p> <p><em>Conclusions</em></p> <p>Our preliminary study is the first to attempt to connect ploidy changes to continuous latitudinal movement, but we cannot favor one hypothesis over another. Given that patterns seem to be clade-specific, a larger number of clades must be analyzed in future studies for generalities to be drawn.</p>
Fig. 16. Xeruca formosensis, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 16. Xeruca formosensis, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 15. Tubuca paradussumieri, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 15. Tubuca paradussumieri, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 13. Tubuca coarctata, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 13. Tubuca coarctata, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 12. Tubuca arcuata, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 12. Tubuca arcuata, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 11. Tubuca acuta, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 11. Tubuca acuta, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 9. Paraleptuca crassipes, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 9. Paraleptuca crassipes, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
Fig. 8. Gelasimus vocans, zoea I. A in Fig. 3 in Historical Biogeography of the Group (Anura, Leptodactylidae): Identification of Ancestral Areas and Events that Modeled their Distribution.
Fig. 8. Gelasimus vocans, zoea I. A, carapace; B, antennule; C, antenna; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped; H, pleon and telson.
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.