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32 results for “deep connectivity”
Fig. 7. Connection between UABM and ulnerve nerve. A in The Nerve Bundle via the Median Nerve Innervating the Ulnar Intrinsic Muscles of the Hand in a Gorilla Equivalent to the Deep Branch of the Ulnar Nerve in the Human
Fig. 7. Connection between UABM and ulnerve nerve. A. In the proximal forearm, a thin branch from the ulnar nerve meets a branch from the UABM to make a neural arch that gives off motor branches to the flexor digitorum profundus (FDP) of the ring and little fingers. B. A thin proximal branch (hollow arrow) from the ulnar nerve unites with the radial bundle (motor fasciculi) of the UABM and the other thicker distal one (solid arrow) unites with its ulnar bundle (sensory fasciculi).
High connectivity at abyssal depths: Genomic and proteomic insights into population structure of the pan-Atlantic deep-sea bivalve Ledella ultima (E. A. Smith, 1885)
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Data from: High connectivity across the fragmented chemosynthetic ecosystems of the deep Atlantic Equatorial Belt: efficient dispersal mechanisms or questionable endemism?
Chemosynthetic ecosystems are distributed worldwide in fragmented habitats harbouring seemingly highly specialized communities. Yet, shared taxa have been reported from highly distant chemosynthetic communities. These habitats are distributed in distinct biogeographical regions, one of these being the so-called Atlantic Equatorial Belt (AEB). Here, we combined genetic data (COI) from several taxa to assess the possible existence of cryptic or synonymous species and to detect the possible occurrence of contemporary gene flow among populations of chemosynthetic species located on both sides of the Atlantic. Several Evolutionary Significant Units (ESUs) of Alvinocarididae shrimp and Vesicomyidae bivalves were found to be shared across seeps of the AEB. Some were also common to hydrothermal vent communities of the Mid-Atlantic Ridge (MAR), encompassing taxa morphologically described as distinct species or even genera. The hypothesis of current or very recent large-scale gene flow among seeps and vents was supported by microsatellite analysis of the shrimp species Alvinocaris muricola/Alvinocaris markensis across the AEB and MAR. Two nonmutually exclusive hypotheses may explain these findings. The dispersion of larvae or adults following strong deep-sea currents, possibly combined with biochemical cues influencing the duration of larval development and timing of metamorphosis, may result in large-scale effective migration among distant spots scattered on the oceanic seafloor. Alternatively, these results may arise from the prevailing lack of knowledge on the ocean seabed, apart from emblematic ecosystems (chemosynthetic ecosystems, coral reefs or seamounts), where the widespread classification of endemism associated with many chemosynthetic taxa might hide wider distributions in overlooked parts of the deep sea.
Subtle limits to connectivity revealed by outlier loci within two divergent metapopulations of the deep-sea hydrothermal gastropod Ifremeria nautilei
<p class="MsoNormal"><span>Hydrothermal vents form archipelagos of ephemeral deep-sea habitats that raise interesting questions about the evolution and dynamics of the associated endemic fauna, constantly subject to extinction-recolonization processes. These metal-rich environments are coveted for the mineral resources they harbor, thus raising recent conservation concerns. The evolutionary fate and demographic resilience of hydrothermal species strongly depend on the degree of connectivity among and within their fragmented metapopulations. In the deep sea, however, assessing connectivity is difficult and usually requires indirect genetic approaches. Improved detection of fine-scale genetic connectivity is now possible based on </span><span>genome-wide </span><span>screening for</span><span> </span><span>genetic differentiation.</span></p> <p class="MsoNormal"><span>Here, we explored population connectivity in the hydrothermal vent snail <em>Ifremeria nautilei </em>across its species range encompassing five distinct back-arc basins in the Southwest Pacific. The global analysis, based on 10 570 single nucleotide polymorphism (SNP) markers derived from double digest restriction-site associated DNA sequencing (ddRAD-seq), depicted two semi-isolated and homogeneous genetic clusters. Demo-genetic modeling suggests that these two groups began to diverge about 70 000 generations ago, but continue to exhibit weak and slightly asymmetrical gene flow. Furthermore, a careful analysis of outlier loci showed subtle limitations to connectivity between neighboring basins within both groups. This finding indicates that migration is not strong enough to totally counterbalance drift or local selection, hence questioning the potential for demographic resilience at this latter geographical scale. </span><span>These results illustrate the </span><span>potential</span><span> of large genomic datasets to understand </span><span>fine-scale</span><span> connectivity </span><span>patterns in</span><span> </span><span>hydrothermal vents and the deep sea</span><span>.</span></p>
Fig. 15 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 15 Ziminella vrijenhoeki Valdés et al. 2018, MIMB 42255, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, jaw masticatory border. E, details of denticulation of
Fig. 14 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 14 Results of molecular analysis of different aeolid groups. A, genus Cuthona, COI haplotype network produced with TCS method in PopART. Colors of circles refer to the geographic origin of each haplotype. The relative size of circles is proportional to the number of sequences of that same haplotype. B, molecular phylogenetic hypothesis of genus Cuthona, maximum likelihood, concatenated dataset of three markers (COI + 16S + H3), species-level clades and outgroups are collapsed to a single branch, except Cuthona and Bohuslania species. Numbers above branches indicate posterior probabilities from Bayesian inference, numbers below branches, bootstrap support from maximum likelihood. C, molecular phylogenetic
Fig. 16 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 16 Zeusia herculea (Bergh, 1894), MIMB 42254, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, posterior radular portion. E, anterior radular portion. F, G,
Fig. 13 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 13 Cuthona sp., MIMB 42232, external morphology and SEM micrographs of internal morphology. A, living specimen. B, radula. C, rachidian teeth. Scale bars: A, 5 mm; B, 100 µm; C, 20 µm. Living photo by Anastassya Maiorova
Fig. 12 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 12 Dendronotus kurilensis sp. nov., external morphology and SEM micrographs of internal morphology. A, holotype MIMB 42237, dorsal view. B, MIMB 42237, lateral view from left. C, holotype MIMB 42237, lateral view from right. D, paratypes MIMB 42235. E, paratype MIMB 42238. C, MIMB 42235b, right jaw plate. D, MIMB 42235b, denticulation of masticatory border. E, MIMB
Fig. 10 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 10 Dendronotus patricki Stout et al. 2011, external morphology and SEM micrographs of internal morphology. A, MIMB 42239. B, MIMB 42240. C, MIMB 42241, dorsal side. D, MIMB 42241, ventral side. E, MIMB 42241, left jaw plate. F, MIMB 42241, denticulation of masticatory border. F, MIMB 42241, radula. G, MIMB 42241, rachidian and lateral teeth, posterior radular portion. H, MIMB 42241, rachidian tooth, posterior radular portion. J, MIMB 42241, lateral teeth, posterior radular portion. Scale bars: A–D, 5 mm; E, G, H, 200 µm; F, I, J, 100 µm. Living photos by Anastassya Maiorova
Fig. 11 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 11 Dendronotus zakuro Martynov et al. 2020, external morphology and SEM micrographs of internal morphology. A, MIMB 42244. B, MIMB 42243. C, MIMB 42244, left jaw plate. D, MIMB 42244, denticulation of masticatory border. E, MIMB 42244, posterior radular portion. F, MIMB 42244, middle radular portion. G, MIMB 42244, anterior radular portion. Scale bars: A, B, 5 mm; C, 500 µm; D, 20 µm; F–J, 100 µm. Living photos by Anastassya Maiorova
Fig. 9 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 9 Results of molecular analysis of genus Dendronotus. A, molecular phylogenetic hypothesis, maximum likelihood, concatenated dataset of four markers (COI+ 16S + H3 + 28S), species-level clades and outgroups are collapsed to a single branch, except target species. Numbers above branches indicate posterior probabilities from Bayesian inference, numbers below branches, bootstrap support from maximum likelihood. B, Dendronotus dalli, COI haplotype network produced with TCS method in PopART. Colors of circles refer
Fig. 8 Dendronotus dalli Bergh, 1879 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 8 Dendronotus dalli Bergh, 1879, external morphology and SEM micrographs of internal morphology. A, MIMB 42234a. B, MIMB 42234c. C, MIMB 42233. D, MIMB 42234c, right jaw plate. E, MIMB 42234c, denticulation of masticatory border. F, MIMB 42234c, radula. G—MIMB 42234c, rachidian tooth, posterior radular portion. H, MIMB 422342c, lateral teeth, posterior radular portion. Scale bars: A–C, 10 mm; D, F, 500 µm; E, G, H, 50 µm. Living photos by Anastassya Maiorova
Fig. 7 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 7 Genus Tritonia, external morphology and SEM micrographs of internal morphology. A, Tritonia tetraquetra MIMB 42248. B, Tritonia tetraquetra MIMB 42249. C, Tritonia psoloides MIMB 42245 in natural environment collected by ROV. D, Tritonia tetraquetra MIMB 42246 in natural environment; a specimen is marked by a white arrow. E, Tritonia tetraquetra MIMB 42246, rachidian and inner lateral teeth. F, Tritonia tetraquetra MIMB 42246, middle lateral teeth. G, Tritonia tetraquetra MIMB 42246, outer lateral teeth. Scale bars: A, B, 5 mm. E, F, 100 µm; G, 200 µm. Living photos by Anastassya Mayorova and team of ROV "Komanch"
Fig. 6 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 6 Colga pacifica (Bergh, 1894) MIMB 42231, external morphology and SEM micrographs of internal morphology. A, B, living specimens. C, middle radular portion. Scale bars: A, B, 5 mm, C, 500 µm. Living photo by Anastassya Maiorova
Fig. 5 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 5 Cadlina sp. MIMB 42230, external morphology and SEM micrographs of internal morphology. A, dorsal view of living specimen, ca. 15 mm in length. B, labial cuticle. C, details of labial cuticle. D, radula. E, rachidian and innermost lateral teeth. F, inner lateral teeth. G, outer lateral teeth. Scale bars: A, 5 mm; B, D, 300 µm; C, 10 µm; E–G, 30 µm. Living photo by Anastassya Maiorova
Fig. 4 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 4 Molecular phylogenetic reconstructions of studied groups. A, genus Bathydoris, Bayesian inference, concatenated dataset of four markers (COI+ 16S + H3 + 28S). B, genus Cadlina, maximum likelihood, concatenated dataset of four markers (COI+ 16S + H3 + 28S), species-level clades and outgroups (Dendrodoris and Aldisa) are collapsed to a single branch. C, genus Tritonia, maximum likeli-
Fig. 3 Reproductive system. A in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 3 Reproductive system. A, Bathydoris antoni sp. nov., general view. B, Bathydoris antoni sp. nov., male part and female gland mass partly removed. C, Dendronotus patricki, MIMB 42240. D, Dendronotus kurilensis sp. nov., paratype MIMB 42238. Abbreviations:
Fig. 2 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 2 Bathydoris antoni sp. nov, holotype MIMB 42229, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, lateral view from left. D, lateral view from right. E, jaw plate. F, radula. G, anterior radular portion. H, details of denticulation in rachidian and innermost lateral teeth. I, inner and middle lateral teeth. Scale bars: A–D, 5 mm; E, F, 500 µm; G, I, 100 µm; H, 50 µm. Living photos by Anastassya Maiorova
Fig. 1 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species
Fig. 1 Map of the Northwest Pacific representing collection sites and respective nudibranch species found
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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.