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611 results for “eastern North America”
Data from: Genome-wide evidence of environmentally mediated secondary contact of European green crab (Carcinus maenas) lineages in eastern North America
Genetic-environment associations are increasingly revealed through population genomic data and can occur through a number of processes, including secondary contact, divergent natural selection, or isolation-by-distance. Here we investigate the influence of the environment, including seasonal temperature and salinity, on the population structure of the invasive European green crab (Carcinus maenas) in eastern North America. Green crab populations in eastern North America are associated with two independent invasions, previously shown to consist of distinct northern and southern ecotypes, with a contact zone in southern Nova Scotia, Canada. Using a RAD-seq panel of 9137 genome-wide SNPs, we detected 41 SNPs (0.49%) whose allele frequencies were highly correlated with environmental data. A principal components analysis of 25 environmental variables differentiated populations into northern, southern, and admixed sites in concordance with the observed genomic spatial structure. Furthermore, a spatial principal components analysis conducted on genomic and geographic data revealed a high degree of global structure (p<0.0001) partitioning a northern and southern ecotype. Redundancy and partial redundancy analyses revealed that among the environmental variables tested, winter sea surface temperature had the strongest association with spatial structuring, suggesting that it is an important factor defining range and expansion limits of each ecotype. Understanding environmental thresholds associated with intraspecific diversity will facilitate the ability to manage current and predict future distributions of this aquatic invasive species.
FIGURE 1 in A new species of crane fly, Pedicia (Pedicia) goldsworthyi (Diptera: Pediciidae), from eastern North America
FIGURE 1. Light micrographs of Pedicia (Pedicia) goldsworthyi n. sp. 1. Male hypopygium, dorsal view. 2. Interiolateral view of gonocoxite. 3. Lateral view of male hypopygium. 4. Wing with arrow indicating vein CuA1. Scale bar = 1 mm. (abbreviations: 9s: ninth abdominal segment, gxt: gonocoxite, mvl: mesoventral lobe of gonocoxite).
FIGURE 1. Species collection locations. Ceratina floridana indicated with black triangles, C in Morphological and molecular delineation of a new species in the Ceratina dupla species-group (Hymenoptera: Apidae: Xylocopinae) of eastern North America
FIGURE 1. Species collection locations. Ceratina floridana indicated with black triangles, C. dupla in gray circles, and C. mikmaqi in black circles.
FIGURE 3 in Morphological and molecular delineation of a new species in the Ceratina dupla species-group (Hymenoptera: Apidae: Xylocopinae) of eastern North America
FIGURE 3. Maximum parsimony consensus phylogram of three clades within the Ceratina dupla species-group. Ingroup variants of the C. dupla species-group are indicated in gray and outgroup species in black. Bootstrap support is indicated for each node. Each of the 27 terminal ingroup taxa represents a unique haplotype of the 210 specimens sequenced and names are replaced with collection state/province (sample size) for each haplotype.
FIGURE 2 in Morphological and molecular delineation of a new species in the Ceratina dupla species-group (Hymenoptera: Apidae: Xylocopinae) of eastern North America
FIGURE 2. Neighbour-joining phylogram of three clades within the Ceratina dupla species-group. Ingroup variants of the C. dupla species-group are indicated in gray and outgroup species in black. Bootstrap support is indicated for each node. Each of the 27 terminal ingroup taxa represents a unique haplotype of the 210 specimens sequenced and names are replaced with collection state/province (sample size) for each haplotype.
FIGURES 10–13 in A new genus and new species of Baetidae (Ephemeroptera) from lakes and reservoirs in eastern North America
FIGURES 10–13. Waynokiops dentatogriphus, new genus, new species. 10. Mesothoracic leg. 11. Tarsal claw; note double row of denticles restricted to proximal quarter of claw. 12. Gill VI. 13. Mesothoracic leg, patellotibial region.
FIGURES 7–9 in A new genus and new species of Baetidae (Ephemeroptera) from lakes and reservoirs in eastern North America
FIGURES 7–9. Waynokiops dentatogriphus, new genus, new species. 7. Labial palp. 8. Dorsal view, whole. 9. Lateral view, whole.
FIGURES 1–6 in A new genus and new species of Baetidae (Ephemeroptera) from lakes and reservoirs in eastern North America
FIGURES 1–6. Waynokiops dentatogriphus, new genus, new species. 1. Head, anterior view, cleared and with mouthparts removed. 2. Labrum. 3. Right (planate) mandible. 4. Left (angulate) mandible. 5. Maxilla. 6. Labium.
Figure 2 in Japeaeiella dollŋpartoniana, a New Widespread Lichen in the Appalachian Mountains of Eastern North America
Figure 2. Ecology and distribution of Japeaeiella dollŋpartoniana. A–B, high-elevation heath balds where the species is most commonly found in the southern Appalachians (photographs by S. McKenzie). C, known distribution of the species.
Figure 1 in Japeaeiella dollŋpartoniana, a New Widespread Lichen in the Appalachian Mountains of Eastern North America
Figure 1. Morphology of Japeaeiella dollŋpartoniana. A–B, apothecia and thallus (0.5-mm scale bars). C–D, asci (C— 20 µm, D—50 µm). E, ascospore (20 µm). F, details of excipular anatomy (50 µm).
FIGURE 79 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 79. Propodeum and metapostnotum of female Lasioglossum (Evylaeus) and L. (Sphecodogastra). (A) L. cinctipes showing coarse, rugose sculpture. (B) L. truncatum showing coarse, rugose sculpture. (C) L. boreale showing fine sculpture and weak propodeal carinae. (D) L. comagenense showing fine sculpture and distinct propodeal carinae. (E) L. quebecense showing fine sculpture and distinct propodeal carinae. (F) L. seillean showing fine sculpture and distinct propodeal carinae.
FIGURE 82 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 82. Propodeum, metapostnotum and anterior surface of T1 of female Lasioglossum (Hemihalictus). (A) L. lustrans showing fine metapostnotal sculpture and subappressed hairs on T1. (B) L. foxii showing metapostnotal rugae not reaching posterior dorsal margin. (C) L. inconditum showing metapostnotal rugae reaching posterior dorsal margin.
FIGURE 78 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 78. Mesepisternum of female Lasioglossum (Hemihalictus) of the fedorense species-group. (A) L. swenki showing finely punctate surface. (B) L. fedorense showing impunctate surface.
FIGURE 75 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 75. Propodeum and metapostnotum of female Lasioglossum. (A) L. nelumbonis showing appressed hairs. (B) L. quebecense showing strong propodeal carinae. (C) L. foxii showing weak-absent propodeal carinae.
FIGURE 86 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 86. Metasomal terga of male Lasioglossum (Sphecodogastra). (A) L. cinctipes showing numerous punctures on apical impressed areas. (B) L. trunctatum showing few punctures on apical impressed areas.
FIGURE 72 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 72. Lateral habitus of male Lasioglossum (Sphecodogastra) truncatum (Robertson). Scale bar = 1 mm.
FIGURE 71 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 71. Lateral habitus of female Lasioglossum (Sphecodogastra) truncatum (Robertson). Scale bar = 1 mm.
FIGURE 74 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 74. Scopa of hind leg. (A) L. boreale—unmodified scopa. (B) L. oenotherae—modified scopa for Onagraceae pollen collection.
FIGURE 70 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 70. Distribution map of Lasioglossum (Sphecodogastra) seillean Gibbs & Packer. Heat map indicates predicted suitable range based on maximum entropy niche-modelling. Black circles indicate actual geo-referenced specimen records.
FIGURE 67 in Revision and reclassification of <i>Lasioglossum</i> (<i>Evylaeus</i>), <i>L.</i> (<i>Hemihalictus</i>) and <i>L.</i> (<i>Sphecodogastra</i>) in eastern North America (Hymenoptera: Apoidea: Halictidae)
FIGURE 67. Distribution map of Lasioglossum (Sphecodogastra) quebecense (Crawford). Heat map indicates predicted suitable range based on maximum entropy niche-modelling. Black circles indicate actual geo-referenced specimen records.
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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.