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.
79
datasets available to search
ShareScore release 0.9.0
Dataset results
79 results for “polytypism”
FIGURE 19 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 19. Relative warp grids for the first and second principal components of the variance within a size series of G. c. carapo and between subspecies of G. carapo. A–B. First and second principal components of the variance within the G. c. carapo size series (n=42, 38–316 mm). C–D. First and second principal components of the variance between the seven subspecies of G. carapo (n=88).
FIGURE 18 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 18. Comparisons of morphometric and thalweg-constrained geographic distances among subspecies pairs of G. carapo. Similar subspecies pairs highlighted in shades of green; differences in shades of orange. A. Number of characters with no significant differences using caliper-based morphometrics against thalweg-constrained distances via the Shield pathways. B. Procrustes distances from geometric morphometrics against thalweg-constrained distances via the Sub-Andean pathways.
FIGURE 16 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 16. Principal components analysis of 15 geometric morphometric landmarks for three sympatric Gymnotus from the eastern Amazon: G. c. orientalis (n=9), G. bahianus (n=3) and G. diamantinensis (n=2). Note the greater separation in geometric morphometric PC space than is observed among G. carapo subspecies.
FIGURE 15 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 15. Principal components analysis of 15 geometric morphometric landmarks for three sympatric Gymnotus from the western Amazon: G. c. occidentalis (n=18), G. arapaima (n=29), G. ucamara (n=5). Note the greater separation in geometric morphometric PC space than is observed among G. carapo subspecies.
FIGURE 13 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 13. Principal components analysis of 15 geometric morphometric landmarks for 73 specimens from seven subspecies of G. carapo: G. c. australis (AU, n=4), G. c. caatingaensis (CT, n=3), G. c. carapo (CA, n=15), G. c. madeirensis (MD, n=13), G. c. occidentalis (OC, n=18), G. c. orientalis (OR, n=9), and G. c. septentrionalis (SE, n=10). Note the substantial overlap in PC space between regionally-delineated subspecies.
FIGURE 12 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 12. Principal components analysis of four meristic characters for three sympatric Gymnotus from the eastern Amazon: G. c. orientalis (n=12), G. bahianus (n=8) and G. diamantinensis (n=4). The number of band pairs (BND), posterior lateral line rami (PLR) and number of pectoral fin rays (P1R) load heavily on PC1, while number of scales above the lateral line at midbody (SAL) loads heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 11 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 11. Principal components analysis of four meristic characters for three sympatric Gymnotus species from the western Amazon: G. c. occidentalis (n=14), G. arapaima (n=18), G. ucamara (n=1). The number of band pairs (BND) and number of pectoral fin rays (P1R) load heavily on PC1, while number of scales above the lateral line at midbody (SAL) loads heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 9 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 9. Principal components analysis of four meristic characters for 58 specimens from seven subspecies of G. carapo: G. c. carapo (CA, n=10), G. c. septentrionalis (SE, n=6), G. c. madeirensis (MD, n=8), G. c. occidentalis (OC, n=14), G. c. orientalis (OR, n=12), G. c. caatingaensis (CT, n=6) and G. c. australis (AU, n=2). Note that the number of posterior lateral line rami (PLR) loads heavily PC1 while the number of scales above the lateral line (SAL). Note the substantial overlap in PC space between most subspecies.
FIGURE 14 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 14. Principal components analysis of 15 geometric morphometric landmarks for five sympatric Gymnotus species of the southern fauna: G. c. australis (n=4), G. chimarrao (n=1), G. omarorum (n=10), G. sylvius (n=7) and Gymnotus CALA (n=29). Note the greater separation in geometric morphometric PC space than is observed among G. carapo subspecies.
FIGURE 7 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 7. Principal components analysis of eight point-to-point linear measurements for three sympatric Gymnotus from the western Amazon: G. c. occidentalis (n=65), G. arapaima (n=34), G. ucamara (n=4). Head length (HL), and interorbital distance (IO) load heavily on PC1, while postorbital distance (PO), body width (BW) and preorbital distance (PO) load heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 6 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 6. Principal components analysis of point-to-point linear measurements for five sympatric Gymnotus species from the southern humid Neotropics: G. c. australis (n=25), G. chimarrao (n=4), G. omarorum (n=18), G. sylvius (n=5) and Gymnotus CALA (n=68). Head length (HL) and head depth (HD) load heavily on PC1, while preorbital distance (PR) and postorbital distance (PO) load heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 5 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 5. Principal components analysis of linear measurements for 175 specimens from seven subspecies of G. carapo: G. c. australis (AU, n=25), G. c. caatingaensis (CT, n=8), G. c. carapo (CA, n=31), G. c. madeirensis (MD, n=13), G. c. occidentalis (OC, n=65), G. c. orientalis (OR, n=16) and G. c. septentrionalis (SE, n=15). Head length, head depth, body width and body depth load heavily on PC1, while pre- and postorbital (PR and PO, respectively) and preanal (PA) lengths load heavily on PC2. Note the substantial overlap in PC space between subspecies.
FIGURE 3 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 3. Specimens illustrating variation in body shape and color pattern among seven subspecies of Gymnotus carapo A. G. c. australis, MLP 11222, 289 mm, Argentina, Misiones province, Río Iguazú basin, Arroyo Verde (25°40'15"S, 053°56'00.8"W); B. G. c. caatingaensis, AUM 20624, 225 mm. Brazil, Piauí, Río Gurgueia aff. Río Parnaíba (08°32'24"S, 044°25'48"W); C. G. c. carapo, UMMZ 190414, 146 mm. Suriname, Brokopondo, Marshal Kreek, aff. Suriname River (05°14'24.9"N, 055°05'58.6"W); D. G. c. madeirensis, UMSS 06964, 178 mm. Brazil, Amazonas, Río Beni (10°51'44.302"S, 066°04'50.300"W); E. G. c. occidentalis, UF 122820, 279 mm. Peru, Loreto, Iquitos (03°43'51.73"S, 073°15'3.83"W); F. G. c. orientalis, MCZ 45189, 165 mm. Brazil, Para, Parauapebas, Río Arari, Ilha de Marajó (01°01'S, 048°58'W); G. G. c. septentrionalis, ROM 83885, 233 mm. Guyana, Essequibo, Río Mazaruni (04°55'33.208"N, 060°36'53.784"W). Scale bars=10 mm.
FIGURE 8 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 8. Principal components analysis of point-to-point linear measurements for three sympatric Gymnotus from the eastern Amazon: G. c. orientalis (n=16), G. bahianus (n=28) and G. diamantinensis (n=3). Head length (HL), head depth (HD) and body depth (BD) load heavily on PC1, while body width (BW), preanal length (PA) and postorbital length (PO) and load heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 1 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 1. Schematic illustrating how quantitative differences may be used to characterize species and subspecies. A. Diagnostic differences of trait values (such as a linear measurement) between two species, where the difference of mean trait values between species exceeds the within-species variances; AB> LA and LB. B. Similar differences represented in a principal components (PC)-space, using circles instead of bell curves. Note differences between species centroids exceeds within-species variances (AB> PC1A and PC1B). C. Degrees of phenotypic divergence in a multivariate morphospace. Top: two species with minimal overlap (AB> PC1A and PC1B); e.g. sympatric G. carapo and G. ucamara. Middle: two subspecies with substantial overlap but significant differences (AB ~ PC1A and PC1B); e.g. allopatric G. c. occidentalis and G. c. orientalis. Bottom: one species with morphometrically indistinguishable populations (AB
FIGURE 2 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 2. Geographic distribution of Gymnotus carapo. A. Closed circles show 111 localities of specimens used in morphometric analyses, and open circles show 191 other verified G. carapo localities. B. Collection localities color coded by subspecies. Note G. carapo is absent from the interior of the Brazilian shield and the Atlantic coast of Brazil from Ceará to Rio Grande do Sul.
FIGURE 10 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 10. Principal components analysis of four meristic characters for five sympatric Gymnotus species of the southern fauna: G. c. australis (n=2), G. chimarrao (n=4), G. omarorum (n=10), G. sylvius (n=4) and Gymnotus CALA (n=29). The number of pectoral fin rays (P1R) and number of scales above the lateral line at midbody (SAL) load heavily on PC1, while numbers of posterior lateral line rami (PLR) and bands (BND) loads heavily on PC2. Note the greater separation in PC space than is observed among G. carapo subspecies.
FIGURE 17 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 17. Thalweg-constrained dispersal pathways among the geographic centers of G. carapo subspecies ranges. Regional abbreviations as in Figure 5. Note the "prone-8" pathway in the Guianas (Lujan & Armbruster 2011). Note also the Shield Pathways between AU and CT and OR, and the Sub-Andean pathway between AU, MD, OC, and SE (Tagliacollo et al., 2016).
FIGURE 4. Landmarks used for geometric morphometric analyses. Fifteen landmarks were recorded for 88 in Revision of the polytypic electric fish Gymnotus carapo (Gymnotiformes, Teleostei), with descriptions of seven subspecies
FIGURE 4. Landmarks used for geometric morphometric analyses. Fifteen landmarks were recorded for 88 morphologically mature specimens from seven subspecies of G. carapo Landmarks: 1) tip of snout; 2) tip of maxilla; 3) margin of maxilla; 4) external naris; 5) second pore of the supraorbital laterosensory canal; 6) point directly above midline of eye; 7) supraoccipital crest; 8) base of first anal fin ray; 9) anus; 10) seventh pore of the posterior marginal laterosensory canal; 11) anterior margin of eye; 12) posterior margin of eye; 13) top of preopercle; 14) top of opercle; 15) base of most ventral pectoral fin ray.
Figure 4 in Molecular systematics of the world's most polytypic bird: the Pachycephala pectoralis/melanura (Aves: Pachycephalidae) species complex
Figure 4. Coalescent Pachycephala species tree from *BEAST analysis of nuclear and mitochondrial DNA. The maximum clade credibility tree is superimposed on the cloudogram of the posterior tree distribution, visualized with DensiTree. Node support is denoted as Bayesian posterior probabilities.
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.