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.
918
datasets available to search
ShareScore release 0.7.1
Dataset results
918 results for “oceanic islands”
FIGURE 2 in A new species of Corallana Dana, 1852 (Crustacea: Isopoda: Corallanidae) from the Andaman Islands, northern Indian Ocean
FIGURE 2. Comparisons of the frontal lamina in Corallana. A, Corallana mishrai sp. nov.; B, C. brevipes Schioedte & Meinert, 1879; C, C. furcilla Barnard, 1955; D, C. estuaria Jones, Icely & Cragg, 1983; E, C. hirticauda Schioedte & Meinert, 1879; F, C. nodosa Schioedte & Meinert, 1879; G, C. tridentata Jones, Icely & Cragg, 1983; H, C. collaris Schioedte & Meinert, 1879; I, C. nodosa of Delaney, 1989; J, C. basalis Schioedte & Meinert, 1879. Note: both Corallana nodosa of Beng Chu & Bruce (2010) and Corallana grandiventra Ho & Tonguthai, 1992 completely lack a frontal lamina.
FIGURE 4 in A new species of Corallana Dana, 1852 (Crustacea: Isopoda: Corallanidae) from the Andaman Islands, northern Indian Ocean
FIGURE 4. Corallana mishrai sp. nov., holotype male. A, antennula; B, antenna; C, coxae morphology 2–6; D, pereonite 1; E, pereonite 5; F, pereonite 6; G, pleon.
FIGURE 5 in A new species of Corallana Dana, 1852 (Crustacea: Isopoda: Corallanidae) from the Andaman Islands, northern Indian Ocean
FIGURE 5. Corallana mishrai sp. nov., holotype male. A, maxilliped; B, maxilliped apex articles; C, mandible; D, mandibular palp articles; E, maxillula; F, maxilla.
Diversification of the orchid genus Tridactyle: origin of endemism on the oceanic islands of São Tomé & Príncipe in the Gulf of Guinea
<p><b>Aim</b>: Oceanic islands have played an important role in our understanding of the diversification of organisms, and phylogenetic estimates have been used in this context to investigate the origin of island diversity and its relationship to the continent. Using a typical orchid genus rich in island endemics and with widespread continental relatives, we aim to compare alternative hypotheses of diversification with a focus on island endemism.</p> <p><b>Location</b>: Tropical Africa and the Gulf of Guinea Islands of São Tomé & Príncipe, Central Africa.</p> <p><b>Taxon:</b> <i>Tridactyle</i> genus (Orchidaceae).</p> <p><b>Methods</b>: We used genome skimming to sequence the whole chloroplast genome and nuclear ribosomal genes from 157 individuals of 34 <i>Tridactyle</i> species and 15 individuals of 12 other orchid genera (outgroups) to infer a time-calibrated phylogenetic tree of the genus <i>Tridactyle</i>. We also used multiple statistical methods to infer the geographic ranges of the ancestral nodes from the estimated phylogeny. Alternative hypotheses for the origins of endemism on the islands of São Tomé and Príncipe were investigated based on the biogeographic reconstruction of the genus.</p> <p><b>Results</b>: The estimated phylogeny of <i>Tridactyle</i> and reconstruction of geographic ranges for the ancestral nodes suggested a general history of allopatric speciation for the genus, in particular via colonisation of the islands of the Gulf of Guinea that induced a long period of geographic isolation. The most parsimonious hypothesis to explain island endemism in <i>Tridactyle</i> involved 6 independent colonisations of the islands from the continent.</p> <p><b>Main conclusions: </b>In contrast to other cases of oceanic island endemism that involved adaptive radiation on an island or within an archipelago, endemism in <i>Tridactyle</i> is better explained by multiple colonisation events from the continent to São Tomé and Príncipe, with subsequent divergences due to geographic isolation but only one potential instance of further diversification on the islands.</p>
Figure 28 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 28. Ute insulagemmae (UFRJPOR 8928). A, diactines. B, cortical triactines. C, tubar triactines. D, subatrial triactine. E, subatrial tetractine. F, atrial tetractine.
Figure 27 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 27. Ute insulagemmae (UFRJPOR 8928). A, oscular margin. B, cross-section. C, tangential section of the cortex. D, detail of the cortex. E, detail of the tubar, subatrial and atrial skeletons. F, tangential section of the atrial surface. cx = cortex.
Figure 26. Ute insulagemmae. A in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 26. Ute insulagemmae. A, pink chromotype (UFRJPOR 8925). B, yellow chromotype (UFRJPOR 8938). C, white chromotype (UFRJPOR 8948). D, fixed specimen.
Figure 24 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 24. Leucandra ornata (holotype; UFRJPOR 8928). SEM: A, entire specimen. B, tangential section of the cortex. C, detail of the cortex showing a microdiactine (arrow) and a cortical triactine with elevated centre (asterisk). D, tangential section of the atrium. E, detail of an exhalant canal with microdiactines. F, detail of the microdiactines with spines. osc = osculum.
Figure 23 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 23. Leucandra ornata (holotype; UFRJPOR 8928). A, oscular margin. B, cross-section. C, tangential section of the cortex. D, detail of the cortex showing diactines II organised in bouquet. E, detail of the choanosome showing a tetractine of the canals. F, cross-section of the atrium (microdiactines in the inset). cx = cortex, at = atrium.
Figure 21 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 21. Aphroceras seychellensis (UFRJPOR 8926). A, cortical diactine. B, oscular triactine. C, cortical triactine. D, choanosomal triactine. E, choanosomal triactine. F, tetractine of the canals. G, atrial triactine.
Figure 25 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 25. Leucandra ornata (holotype; UFRJPOR 8928). A, diactines. B, microdiactines. C, cortical triactines. D, choanosomal large triactine. E, canal triactine. F, tetractine of the canals. G, atrial tetractines. H, tetractine of the osculum.
Figure 19. Aphroceras seychellensis. A in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 19. Aphroceras seychellensis. A, specimen in vivo (UFRJPOR 8926). B, specimen in vivo (UFRJPOR 8934). C, fixed specimen (UFRJPOR 8926). D, fixed specimen (UFRJPOR 8934).
Figure 18 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 18. Lelapiella tertia (holotype; UFRJPOR 8937). A, tripod. B, triactine. C, tetractine. D, apical actine of a tetractine.
Figure 20 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 20. Aphroceras seychellensis (UFRJPOR 8926). A, oscular margin. B, cross-section. C, cross-section evidencing subcortical lacunae. D, tangential section of the cortex. E, choanosomal canal surrounded by a triactine and a tetractine (arrow points to the apical actine of the tetractine). F, tangential section of the atrial surface. cx = cortex, at = atrium.
Figure 17 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 17. Lelapiella tertia (holotype; UFRJPOR 8937). A, specimen in vivo (arrow points to the sponge). B, fixed specimen. SEM: C, fragment of the specimen. D, tangential section of the surface. E, choanosome. F, tetractines in the choanosome.
Figure 14 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 14. Leucaltis nodusgordii. (UFRJPOR 8930). A, cortical triactine. B, cortical tetractine. C, regular choanosomal triactine. D, sagittal choanosomal or atrial triactine. E, regular choanosomal tetractine. F, sagittal choanosomal or atrial tetractine.
Figure 15 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 15. Leucascus tenuispinae (holotype; UFRJPOR 8927). A, specimen in vivo. B, fixed specimen. C, tangential section of the surface. D, diactine. E, triactine. F, tetractine. G, apical actine of a tetractine with short spines.
Figure 16 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 16. Leucetta chagosensis. (UFRJPOR 8939). A, specimen in vivo. B, fixed specimen. C, cross-section. D, tangential section of the cortex. E, triactine I. F, triactines II. G, tetractines. cx = cortex, at = atrium.
Figure 13 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 13. Leucaltis nodusgordii. (UFRJPOR 8930). A, specimen in vivo. B, fixed specimen. C, choanosome full of yellow reproductive elements. D, cross-section (arrow points to a reproductive element). E, tangential section of the cortex. F, tangential section of the atrial wall. cx = cortex, at = atrium.
Figure 12 in Integrative taxonomy of calcareous sponges (Porifera: Calcarea) from Réunion Island, Indian Ocean
Figure 12. Ascandra oceanusvitae (holotype; UFRJPOR 8944). A, diactine. B, triactine I. C, triactines II. D, tetractine I. E, tetractine II. F, apical actine of a tetractine II.
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.