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.
430
datasets available to search
ShareScore release 0.9.0
Dataset results
430 results for “phylogenetic relations”
Two new species of the Lycophyte Genus Selaginella (Selaginellaceae) from China, with notes on phylogenetic position of related species
<p>Two new species of lycophytes, <em>Selaginella obovata</em> and <em>S. zhangii</em>, were discovered in southeastern Yunnan, China. <em>Selaginella obovata</em> is characterized by the prostrate habit and relatively small size of plant, obovate median leaves, and short, dorsiventral strobili, and is not apparently similar to any known species. Phylogenetic analyses of plastid sequences (<em>rbcL</em>, <em>atpI</em>, <em>psbA</em>) indicated that <em>S. obovata</em> is closely allied to <em>S. bisulcata</em>, which is also supported by spore morphology, and that these two taxa together with <em>S. pennata</em> constitute a well-supported monophyletic group. <em>Selaginella zhangii</em> is comparable to <em>S. rolandi-principis</em> in their broad stems (including leaves) and shape and arrangement of vegetative leaves; but the former differs from the latter in its prostrate habit and dorsiventral strobili. The result of phylogenetic analyses showed indicate that <em>S. zhangii</em> is allied to <em>S. heterostachys</em> in the <em>S. heterostachys–S. ciliaris</em> clade, while <em>S. rolandi-principis</em> is distantly placed in the <em>S. doederleinii–S. involvens</em> clade. Finally, we provide comprehensive descriptions, photographs of living plants, line drawings, and scanning electron micrographs of spores to facilitate their recognition.</p>
Figure 1 in A barcode-based phylogenetic scaffold for Xysticus and its relatives (Araneae: Thomisidae: Coriarachnini)
Figure 1. Majority-rule consensus tree of Coriarachnini barcode sequences. Barcodes of all other members of Thomisidae are used as outgroup to root the tree, and support by each of the four phylogenetic inference methods (Neighbour Joining, MrBayes, Maximum Likelihood, and Maximum Parsimony) is indicated at each resolved branch (filled circles: supported; grey circle: not resolved by this method; open circle: not supported).
◂Fig. 5 Cells of phylogenetically related strains (light microscopy). a Thecate cell in dorsal view. b Thecate cell in ventral view, note the sulcus extending onto the epitheca (arrow). c Putatively necrotic, thecate cell. d Thecate cell with one bulge on the epitheca (arrow), note that this was the only such cell among thousands of inspected cells. e, f Coccoid cells, apparently without thecae. g Two thecate cells enclosed in the parental theca. h Two connected, immotile cells enclosed in the parental thecae. j Lid of epitheca in dorsal-apical view (mirrored), composed of plates 2′‒4′, all intercalary plates and plates 2′′‒6′′. l‒m Same opened theca in ventral view (l) and dorsal view (m), note the sulcus extending onto the epitheca (arrow), the dorsal opening and all apical and all intercalary plates and plates 3′′‒5′′ remaining with the hypotheca. n Chloroplasts (as inferred from autofluorescence), note the space occupied by the nucleus. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′: postcingular plate; na: anterior intercalary plate. Scale= 10 µm in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)
◂Fig. 5 Cells of phylogenetically related strains (light microscopy). a Thecate cell in dorsal view. b Thecate cell in ventral view, note the sulcus extending onto the epitheca (arrow). c Putatively necrotic, thecate cell. d Thecate cell with one bulge on the epitheca (arrow), note that this was the only such cell among thousands of inspected cells. e, f Coccoid cells, apparently without thecae. g Two thecate cells enclosed in the parental theca. h Two connected, immotile cells enclosed in the parental thecae. j Lid of epitheca in dorsal-apical view (mirrored), composed of plates 2′‒4′, all intercalary plates and plates 2′′‒6′′. l‒m Same opened theca in ventral view (l) and dorsal view (m), note the sulcus extending onto the epitheca (arrow), the dorsal opening and all apical and all intercalary plates and plates 3′′‒5′′ remaining with the hypotheca. n Chloroplasts (as inferred from autofluorescence), note the space occupied by the nucleus. Plate labelling follows the Kofoidean notation, n′: apical plate; n′′: precingular plate; n′′′: postcingular plate; na: anterior intercalary plate. Scale= 10 µm
FIGURE 1 in Taxonomic and systematic implications of the revision of the phylogenetic relations in the genus Ectinogonia Spinola 1837 (Coleoptera: Buprestidae) of Central Chile
FIGURE 1. Location of the study area (A) and distribution map of the studied species (B).
Data from: Degree of specialization is related to body size in herbivorous insects: a phylogenetic confirmation
Numerous studies have suggested a general relationship between the degree of host specialization and body size in herbivorous animals. In insects, smaller species are usually shown to be more specialized than larger-bodied ones. Various hypotheses have attempted to explain this pattern but rigorous proof of the body size-diet breadth relationship has been lacking, primarily because the scarceness of reliable phylogenetic information has precluded formal comparative analyses. Explicitly using phylogenetic information for a group of herbivores (geometrid moths) and their host plant range, we perform a comparative analysis to study the body size-diet breadth relationship. Considering several alternative measures of body size and diet breadth, our results convincingly demonstrate without previous methodological issues – a first for any taxon – a positive association between these traits, which has implications for evaluating various central aspects of the evolutionary ecology of herbivorous insects. We additionally demonstrate how the methods used in this study can be applied in assessing hypotheses to explain the body size-diet breadth relationship. By analyzing the relationship in tree-feeders alone and finding that the positive relationship remains, the result suggests that the body size-diet breadth relationship is not solely driven by the type of host plant that species feed on.
Figure 2 in The complete mitochondrial genome of Parnassius actius (Lepidoptera: Papilionidae: Parnassinae) with the related phylogenetic analysis
Figure 2. Codon distribution in nine Parnassiinae mitogenome (Numbers to the left refer to the total number of codons; CDspT— codons per thousand codons; codon families are provided on the x axis).
Figure 54 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 54. Oryzias sarasinorum (Popta, 1905), Lake Lindu, Sulawesi Tengah, Indonesia, female, CMK 6557, 53.4 mm SL, carrying a cluster of embryos between pelvic fins and body.
Figure 42. Oryzias hubbsi Roberts, 1998 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 42. Oryzias hubbsi Roberts, 1998, laboratory stock of fish collected in Jakarta, Java, Indonesia, CAS 92322, paratype, male, 14.5 mm SL.
Figure 30 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 30. Cladogram of relationships among ricefish species, classified herein in two monophyletic genera, Adrianichthys and Oryzias. Character states at each lettered node are described and discussed in the text. Nodes marked by solid circles are supported by at least one synapomorphy; those marked by an open circle are supported only by homoplasies under a fast character state optimization. Character support at each node is discussed in the Phylogenetic analysis.
Figure 29. A in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 29. A, Adrianichthys oophorus, USNM 348386, 60 mm SL. B, Oryzias orthognathus, USNM 350562, 43.5 mm SL. Caudal fin osteology. Arrows point to anteriormost dorsal and ventral procurrent rays. Note hooked proximal portion of the procurrent rays in B.
Figure 14 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 14. Oryzias celebensis (Weber, 1894), Sulawesi Selatan, Indonesia, ZSM/LIPI 19, male, 31.4 mm SL, above, female, 29.1 mm SL, below.
Figure 12. Oryzias matanensis, CMK 6195 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 12. Oryzias matanensis, CMK 6195, male, 44.5 mm SL (above), female, 40.2 mm SL (below), ventral view of midbody. Note small, single-lobed urogenital papilla in male, bilobed papilla in female.
Figure 18. A. Adrianichthys oophorus, USNM 348386 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 18. A. Adrianichthys oophorus, USNM 348386, female, 60 mm SL; B. A. roseni, USNM 322425, female, 73 mm SL. Anterior portion of skull, jaws and jaw suspensorium. The cartilage that may be seen between the two preethmoid cartilages in B is the cartilaginous symphysis of the dentaries. Anterior is up.
Figure 10. A in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 10. A, Dermogenys robertsi, CAS 137635, 39 mm SL; B, Adrianichthys oophorus, USNM 350469, 41 mm SL. Diagrammatic representation of the left shoulder girdle. Anterior is to the left. Scale bar = 1 mm.
Figure 7. A in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 7. A, Oryzias bonneorum, ZMA 123.863, adult male, 41 mm SL. B, Belonesox belizanus, USNM 134595, adult male, 80 mm SL. Lateral view of gill arches to demonstrate complex, branched, cartilaginous ceratobranchial epiphysis. Elongate cartilage associated with ceratobranchial one is starred in B. Anterior is up.
Figure 33 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 33. Adrianichthys oophorus (Kottelat, 1990a), Lake Poso, Sulawesi Tengah, Indonesia, USNM 340431, female, 58 mm SL, carrying cluster of embryos.
Figure 38 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 38. Oryzias bonneorum sp. nov., holotype, Lake Lindu, Sulawesi Tengah, Indonesia, male, MZB 15499, male, 52 mm SL.
Figure 24. A in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 24. A, Hemirhamphodon kuekenthali, USNM 330828, adult male, 50 mm SL; B, Adrianichthys roseni, USNM 322425, adult female, 73 mm SL; C, Adrianichthys poptae, USNM 322423, adult female, 168 mm SL; D, Adrianichthys oophorus, USNM 348386, female, 60 mm SL; E, Oryzias bonneorum, ZMA 123.863, adult female, 40 mm SL; F, Oryzias dancena, USNM 342156, adult male, 24.5 mm SL. Diagrammatic representation of the hyoid bar. Arrows indicate posterior extent of the ramus of the ventral hypohyal. Beloniform fishes lack an interhyal. All drawn to same scale.
Figure 20. A in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 20. A, Oryzias setnai, USNM 277482, 14.5 mm SL; B, O. uwai, CAS 92310, 12 mm SL; C, O. minutillus, CAS 58022, 11 mm SL. Anterior portion of skull and jaw and jaw suspensorium. Arrow points to the medial anterior extension of the ethmoid cartilage. Scale bar = 0.5 mm.
Figure 4 in A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)
Figure 4. Strict consensus of two cladograms of relationships among 28 species of ricefishes, family Adrianichthyidae (shaded) as produced by the phylogenetic analysis based on the characters coded as listed (Appendix 1) and as presented in a data matrix (Appendix 2). Unsupported nodes were collapsed. Support at each node is discussed in the text. Coded outgroup taxa representing the major atherinomorph lineages are Menidia (Atheriniformes), Rivulus (Cyprinodontiformes) and Zenarchopteridae (Beloniformes, suborder Exocoetoidei). Cyprinodontea = Cyprinodontiformes plus Beloniformes (following Dyer & Chernoff, 1996). See Phylogenetic analysis for discussion and details.
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.