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.
573
datasets available to search
ShareScore release 0.9.0
Dataset results
573 results for “geographic species distribution”
FIGURES 49–50. Two first tergites modified into androconial organs. 49. Parascepsis ingenium Grados & Mantilla new species. 50 in The genusParascepsis Dognin,1923(Lepidoptera,Erebidae,Arctiinae,Ctenuchina) in Peru, with the description of three new species, a new combination and their geographical distributions
FIGURES 49–50. Two first tergites modified into androconial organs. 49. Parascepsis ingenium Grados & Mantilla new species. 50. Parascepsis ignobilis Grados & Mantilla new species.
FIGURES 59 in The genusParascepsis Dognin,1923(Lepidoptera,Erebidae,Arctiinae,Ctenuchina) in Peru, with the description of three new species, a new combination and their geographical distributions
FIGURES 59. Geographical distribution of Parascepsis ockendeni Rothschild, P. lantingi Grados new species, and P. solox (Dognin).
FIGURES 57–58 in The genusParascepsis Dognin,1923(Lepidoptera,Erebidae,Arctiinae,Ctenuchina) in Peru, with the description of three new species, a new combination and their geographical distributions
FIGURES 57–58. Wings of Parascepsis ingenium Grados & Mantilla new species. 57. Forewing. 58. Hindwing.
Data from: Description of a new species of Hedruris Nitzsch, 1821 (Nematoda, Hedruridae) from freshwater turtles in Argentina, with information on its life cycle and a review of the genus's host and geographic distribution
Hedruris dratini n. sp. (Nematoda, Hedruridae) is described from freshwater turtles in Argentina and information about its life cycle provided. The new species differs from the remaining species of the genus by possessing an excretory pore, and the nerve ring and deirids being positioned at equal distance from the anterior end. Additionally, H. dratini n. sp. has mammilated eggs and males possess nine pairs of caudal papillae. The first life cycle within the genus including an amphipod as intermediate host and a reptile as a definitive host is presented. Furthermore, the host and geographic distribution of species of the genus Hedruris Nitzsch, 1821 are analyzed. Although the genus has a cosmopolitan distribution and parasitizes a great diversity of hosts, the majority of its species follow a Gondwanian distribution and its preferred hosts are amphibians.
Data from: Hybridization and geographic distribution shapes the spatial genetic structure of two co-occurring orchid species
Multiple ecological and life-history traits shape the fine-scale spatial genetic structure (FSGS) of a given population. The occurrence in core versus peripheral populations, levels of outcrossing, pollen and seed dispersal, and hybridization are important biological properties that influence the kinship of individuals within populations. We examined spatial genetic structure within 15 populations of Epidendrum fulgens and E. puniceoluteum distributed along a linear gradient of Brazilian coastal vegetation, including both allopatric and sympatric populations where the two orchid species hybridize. We analyzed 581 mapped specimens using nine simple sequence repeat loci, aiming to investigate how geographic distribution and hybridization shape within-population FSGS. A significant increase in FSGS was found towards peripheral populations, compared to core populations. Analysis of short- and long-distance components of FSGS identified biparental inbreeding and higher levels of FSGS at peripheral populations, when compared to core populations. In contrast, the relatively high density of reproductive adults in core populations potentially leads to highly overlapping seed and pollen movement, decreasing FSGS. Hybridization was an important factor shaping within-population spatial genetic structure at sympatric sites, decreasing the FSGS observed in parental species. Our results indicate that different ecological forces act in concert to create a gradient of FSGS along species distribution ranges, shaped by extensive levels of intra- and interspecific gene exchange.
Data from: Ring distributions leading to species formation: a global topographic analysis of geographic barriers associated with ring species
BACKGROUND: In the mid 20th Century, Ernst Mayr and Theodosius Dobzhansky championed the significance of circular overlaps or ring species as the perfect demonstration of speciation, yet in over 50 years since only a handful of such taxa are known. We developed a topographic model to evaluate whether the geographic barriers that favor processes leading to ring species are common or rare, and to predict where other candidate ring barriers might be found. RESULTS: Of the 952,147 geographic barriers identified on the planet, only about 1% are topographically similar to barriers associated with known ring taxa, with most of the likely candidates occurring in under-studied parts of the world (e.g., marine environments, tropical latitudes). Predicted barriers separate into two distinct categories: (i) single cohesive barriers (<50,000 km2), associated with taxa that differentiate at smaller spatial scales (salamander: Ensatina eschscholtzii; tree: Acacia karroo); and (ii) composite barriers – formed by groups of barriers (each 184,000 to 1.7 million km2) in close geographic proximity (totaling 1.9 to 2.3 million km2) – associated with taxa that differentiate at larger spatial scales (birds: Phylloscopus trochiloides and Larus [sp. argentatus and fuscus]). When evaluated globally, we find a large number of cohesive barriers that are topographically similar to those associated with known ring taxa. Yet, compared to cohesive barriers, an order of magnitude fewer composite barriers are similar to those that favor ring divergence in species with higher dispersal. CONCLUSIONS: While these findings confirm that the topographic conditions that favor evolutionary processes leading to ring speciation are in fact rare, they also suggest that many understudied natural systems could provide valuable demonstrations of continuous divergence towards the formation of new species. Distinct advantages of the model are that it (i) requires no a priori information on the relative importance of features that define barriers, (ii) can be replicated using any kind of continuously distributed environmental variable, and (iii) generates spatially explicit hypotheses of geographic species formation. The methods developed here – combined with study of the geographical ecology and genetics of taxa in their environments – should enable recognition of ring species phenomena throughout the world.
FIGURES 56–63. Leptopilina boulardi. 56 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 56–63. Leptopilina boulardi. 56. Head, anterior view (407x, 20 m); 57. Female antenna (309x, 20 m); 58. Flagellomerous 1 and 2 of male (267x, 20 m); 59. Pronotal plate (790x, 20 m); 60. Head, mesosoma and anterior part of metasoma, lateral view (100x, 100 m); 61. Mesosoma, dorsal view (335x, 20 m); 62. Forewing (10x, 0.14mm); 63. Metacoxa (230x, 100 m).
FIGURES 48–55. Aganaspis nordlanderi. 48 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 48–55. Aganaspis nordlanderi. 48. Head, anterior view (174x, 100 m); 49. Female antenna (66x, 250 m); 50. Flagellomerous 1 and 2 of male (84x, 100 m); 51. Pronotal plate (105x, 100 m); 52, Head, mesosoma and anterior part of metasoma, lateral view (35x, 500 m); 53. Mesosoma, dorsal view (74x, 250 m); 54. Forewing (10x, 0,5mm); 55. Metacoxa (120x, 100 m).
FIGURES 40–47. Trybliographa infuscata. 40 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 40–47. Trybliographa infuscata. 40. Head, anterior view (218x, 100 m); 41. Female antenna (109x, 100 m); 42. Flagellomerous 1 and 2 of male (182x, 100 m); 43. Pronotal plate (568x, 20 m); 44. Mesosoma and anterior part of metasoma, lateral view (161x, 100 m); 45. Mesosoma, dorsal view (193x, 100 m); 46. Forewing (10x, 0,5mm); 47. Metacoxa (161x, 100 m).
FIGURES 3239. Aganaspis pelleranoi. 32 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 3239. Aganaspis pelleranoi. 32. Head, anterior view (170x, 100 m); 33. Female antenna (97x, 100 m); 34. Flagellomerous 1 and 2 of male (130x, 100 m); 35. Pronotal plate (288x, 100 m); 36. Head, mesosoma and anterior part of metasoma, lateral view (48x, 250 m); 37. Mesosoma, dorsal view (64x, 250 m); 38. Forewing (10x, 0,5mm); 39. Metacoxa (163x, 100 m).
FIGURES 24–31. Odontosema anastrephae. 24 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 24–31. Odontosema anastrephae. 24. Head, anterior view (201x, 100 m); 25. Female antenna (135x, 100 m); 26. Flagellomerous 1 and 2 of male (145x, 100 m); 27. Pronotal plate (130x, 100 m); 28. Head, mesosoma and anterior part of metasoma, lateral view (37x, 250 m); 29. Mesosoma, dorsal view (68x, 250 m); 30. Forewing (10x, 0,5mm); 31. Metacoxa (84x, 100 m).
FIGURES 16–23. Dicerataspis grenadensis. 16 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 16–23. Dicerataspis grenadensis. 16. Head, anterior view (140x, 100 m); 17. Female antenna (204x, 100 m); 18. Flagellomerous 1 and 2 of male (280x, 100 m); 19. Pronotal plate (366x, 20 m); 20. Head, mesosoma and anterior part of metasoma, lateral view (120x, 100 m); 21. Mesosoma, dorsal view (130x, 100 m); 22. Forewing (10x, 0,5mm); 23. Metacoxa (130x, 100 m).
FIGURES 1–8. Lopheucoila anastrephae. 1 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 1–8. Lopheucoila anastrephae. 1. Head, anterior view (183x, 100 m); 2. Female antenna (58x, 250 m); 3. Flagellomerous 1 and 2 of male (170x, 100 m); 4. Pronotal plate (160x, 100 m); 5. Head, mesosoma and anterior part of metasoma, lateral view (74x, 250 m); 6. Mesosoma, dorsal view (172x, 100 m); 7. Forewing (10x, 0,5mm); 8. Metacoxa (163x, 100 m).
FIGURES 9–15. Tropideucoila weldi. 9 in Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations
FIGURES 9–15. Tropideucoila weldi. 9. Head, anterior view (228x, 100 m); 10. Female antenna (179x, 100 m); 11. Pronotal plate (391x, 20 m); 12. Mesosoma and anterior part of metasoma, lateral view (168x, 100 m); 13. Head and mesosoma, dorsal view (215x, 100 m); 14. Forewing (10x, 0,25mm); 15. Metacoxa (261x, 100 m).
FIGURE 5 in Neverita delessertiana (Récluz in Chenu, 1843): a naticid species (Gastropoda: Caenogastropoda) distinct from Neverita duplicata (Say, 1822) based on molecular data, morphological characters, and geographical distribution
FIGURE 5: A: Size ratios (height/width) of 181 specimens of Neverita duplicata and 97 specimens of Neverita delessertiana from Massachusetts to Honduras (for localities see Table 2). The ratios range from 0.63 to 1.13 for N. duplicata and from 0.74 to 1.01 for N. delessertiana. B: The averages of the size ratios are 0.85 ± 0.006 (SEM) for N. duplicata and 0.90 ± 0.005 (SEM) for N. delessertiana (P <0.0001, nonparametric twotailed ttest).
FIGURE 4 in Neverita delessertiana (Récluz in Chenu, 1843): a naticid species (Gastropoda: Caenogastropoda) distinct from Neverita duplicata (Say, 1822) based on molecular data, morphological characters, and geographical distribution
FIGURE 4: Typical shells of Neverita duplicata (AC), and Neverita delessertiana (DF). The umbilical areas are shown enlarged in C and F. The ridge (keel) within the umbilical channel (closed arrows in D and F) of N. delessertiana is present in all specimens investigated. Additionally, the shape of the umbilical callus often differs between the two species [open arrows in C and F]. The callus of N. delessertiana in most specimens is more triangular (F) while that of N. duplicata is more rounded (C).
FIGURE 6 in Two new genera and two new species of the subterranean family Bogidiellidae (Crustacea, Amphipoda) from groundwaters in northern Oman, with notes on the geographic distribution of the family
FIGURE 6. Geographic distribution of Stockigidiella and Omangidiella in the Sultanate of Oman. 1, S. aequimana (solid circle). 2, O. parvidactyla (open circles).
FIGURE 5 in Two new genera and two new species of the subterranean family Bogidiellidae (Crustacea, Amphipoda) from groundwaters in northern Oman, with notes on the geographic distribution of the family
FIGURE 5. Omangidiella parvidactyla, new species, female holotype 3 mm, Wadi Nakhl (Sultanate of Oman). a, pereopod 3 with oostegites; b–d, pereopods 5–7; e, pleonal plate and pleopod; e' retinacula; f–h, uropods 1–3; i, telson.
FIGURE 4 in Two new genera and two new species of the subterranean family Bogidiellidae (Crustacea, Amphipoda) from groundwaters in northern Oman, with notes on the geographic distribution of the family
FIGURE 4. Omangidiella parvidactyla, new species, female holotype 3 mm, Wadi Nakhl and paratype, Wadi Bani Henay (Sultanate of Oman) (mouthparts). a, b, antennae 1, 2; c, labrum; d, left mandible; e, right mandible; f, labium; g, h, maxillae 1, 2; i, maxilliped; l, gnathopod l; l'carpus, propodus and dactylus of gnathopod 1; m, gnathopod 2, outer side; n, gnathopod 2, inner side; n', carpus, propodus and dactylus of gnathopod 2.
FIGURE 3 in Two new genera and two new species of the subterranean family Bogidiellidae (Crustacea, Amphipoda) from groundwaters in northern Oman, with notes on the geographic distribution of the family
FIGURE 3. Stockigidiella aequimana, new species, male (?) holotype 3.7 mm, Dibab (Sultanate of Oman). a–c, pleopods 1–3; d–f, uropods 1–3; g, telson; h, pleonal plates.
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.