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5,864 results for “species diversity”
FIGURE 7 in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 7. Da Dong, type locality of Wumengius fengi n. gen., n. sp., A. entrance; B & C. speleothems inside the cave.
FIGURE 3. Youtrechus zijunae n. gen., n in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 3. Youtrechus zijunae n. gen., n. sp. A. head (ventral); B. left elytron (white dots indicating the chaetotaxy); C. median lobe, lateral view; D. apical lobe, dorsal view.
FIGURE 11 in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 11. Xiniuyan Cave, the type locality of Chenotrechus parvulus n. gen., n. sp., A & B. stalactic forms inside cave; C & D. two running beetles; E. a scutiger; F. a millipede of Glyphiulus species.
FIGURE 1 in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 1. Map indicating the locality caves of the new genera and species. a. Xianren Dong; b. Shisanya Dong; c. Da Dong, Tuoluo; d. Da Dong, Bali; e. Weixiao Tiankeng; f. Laba Dong; g. Gui Dong; h. Suolue Cave I; i. Xiannü Dong; j. Jiudu Cave I; k. Xiannü Dong; l. Yunxian Dong; m. Zhongguo Dong; n. Feixian Dong.
FIGURE 10 in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 10. Male genitalia of Chenotrechus parvulus n. gen., n. sp. A. median lobe, lateral view; B. median lobe, dorsal view; C. genital ring.
FIGURE 14 in A contribution to cavernicolous beetle diversity of South China Karst: eight new genera and fourteen new species (Coleoptera: Carabidae: Trechini)
FIGURE 14. Zhongguo Cave, type locality of Sinaphaenopoides zhaoyiae n. gen., n. sp., A. entrance; B. a small gallery where the first beetle was found by Yi Zhao; C. non-glowing sticky worms and threads; D. a running beetle in cave; E. rimstone dam; F. millipedes (Glyphiulus sp.).
Distinct Wolbachia localization patterns in oocytes of diverse host species reveal multiple strategies of maternal transmission
<p><span>A broad array of endosymbionts radiate through host populations via vertical transmission, yet much remains unknown concerning the cellular basis, diversity and routes underlying this transmission strategy. Here we address these issues, by examining the cellular distributions of <em>Wolbachia</em> strains that diverged up to 50 million years ago in the oocytes of 18 divergent <em>Drosophila</em> species. This analysis revealed three <em>Wolbachia</em> distribution patterns: 1) a tight clustering at the posterior pole plasm (the site of germline formation); 2) a concentration at the posterior pole plasm, but with a significant bacteria population distributed throughout the oocyte; 3) and a distribution throughout the oocyte, with none or very few located at the posterior pole plasm. Examination of<em> </em>this latter class indicates <em>Wolbachia</em> accesses the posterior pole plasm during the interval between late oogenesis and the blastoderm formation. We also find that one <em>Wolbachia</em> strain in this class concentrates in the posterior somatic follicle cells that encompass the pole plasm of the developing oocyte. In contrast, strains in which <em>Wolbachia</em> concentrate at the posterior pole plasm generally exhibit no or few <em>Wolbachia</em> in the follicle cells associated with the pole plasm. Taken together, these studies suggest that for some <em>Drosophila</em> species, <em>Wolbachia</em> invade the germline from neighboring somatic follicle cells. Phylogenomic analysis indicates that closely related <em>Wolbachia</em> strains tend to exhibit similar patterns of posterior localization, suggesting that specific localization strategies are a function of <em>Wolbachia</em>-associated factors. Previous studies revealed that endosymbionts rely on <em>one</em> of two distinct routes of vertical transmission: continuous maintenance in the germline (germline-to-germline) or a more circuitous route via the soma (germline-to-soma-to-germline). Here we provide compelling evidence that <em>Wolbachia</em>strains infecting <em>Drosophila </em>species maintain the diverse arrays of cellular mechanisms necessary for <em>both</em> of these distinct transmission routes. This characteristic may account for its ability to infect and spread globally through a vast range of host insect species.</span></p>
Reconstructing the landscape of gut microbial species across 29,000 diverse individuals
<p>The human gut microbiome has been linked to health and disease. Investigation of the human microbiome has largely employed 16S amplicon sequencing, with limited ability to distinguish microbes at the species level. Herein, we describe the development of Reference-based Exact Mapping (RExMap) of microbial amplicon variants that enables mapping of microbial species from standard 16S sequencing data. RExMap analysis of 16S data captures ~75% of microbial species identified by whole-genome shotgun sequencing, despite hundreds-fold less sequencing depth. RExMap re-analysis of existing 16S data from 29,349 individuals across sixteen regions from around the world reveals a detailed landscape of gut microbial species across populations and geography. Moreover, RExMap identifies a core set of fifteen gut microbes shared by humans. Core microbes are established soon after birth and closely associate with BMI across multiple independent studies. RExMap and the human microbiome dataset are presented as resources with which to explore the role of the human microbiome.</p>
FIGURE 125 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 125. Tyrannochthonius yanshanensis sp. nov., holotype female: A. Left chela (lateral view), with details of teeth and with trichobothrial pattern; B. Left chela (dorsal view); C. Leg I (lateral view); D. Leg IV (lateral view). Scale bars: 0.10 mm.
FIGURE 124 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 124. Tyrannochthonius yanshanensis sp. nov., holotype female: A. Carapace (dorsal view); B. Left chelicera (dorsal view), with details of teeth; C. Coxal spines on coxae II (ventral view); D. Left pedipalp (minus chela, dorsal view); E. Rallum. Scale bars: 0.10 mm.
FIGURE 114 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 114. Tyrannochthonius quattuor sp. nov., holotype male: A. Carapace (dorsal view); B. Left chelicera (dorsal view), with details of teeth; C. Coxal spines on coxae II (ventral view); D. Left pedipalp (minus chela, dorsal view); E. Rallum. Scale bars: 0.20 mm (A–B, D); 0.10 mm (C, E).
FIGURE 113 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 113. Tyrannochthonius quattuor sp. nov., holotype male (A–F), paratype female (G): A. Left chela (lateral view); B. Left chela (dorsal view); C. Carapace (dorsal view); D. Left chelicera (dorsal view); E. Left pedipalp (minus chela, dorsal view); F. Male genital area (ventral view); G. Female genital area (ventral view).
FIGURE 123 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 123. Tyrannochthonius yanshanensis sp. nov., holotype female (A–F): A. Left chela (lateral view); B. Left chela (dorsal view); C. Carapace (dorsal view); D. Left chelicera (dorsal view); E. Female genital area (ventral view); F. Left pedipalp (minus chela, dorsal view).
FIGURE 119 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 119. Tyrannochthonius umidus sp. nov., holotype male: A. Carapace (dorsal view); B. Left chelicera (dorsal view), with details of teeth; C. Coxal spines on coxae II (ventral view); D. Left pedipalp (minus chela, dorsal view); E. Rallum. Scale bars: 0.20 mm (A–B, D); 0.10 mm (C, E).
FIGURE 117 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 117.Tyrannochthoniusumidus sp. nov.,A.Holotypemale, habitus (dorsalview); B. Paratypefemale,habitus (dorsalview).
FIGURE 110 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 110. Tyrannochthonius qilinensis sp. nov., holotype female: A. Left chela (lateral view), with details of teeth and with trichobothrial pattern; B. Left chela (dorsal view); C. Leg I (lateral view); D. Leg IV (lateral view). Scale bars: 0.20 mm.
FIGURE 109 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 109. Tyrannochthonius qilinensis sp. nov., holotype female: A. Carapace (dorsal view); B. Left chelicera (dorsal view), with details of teeth; C. Coxal spines on coxae II (ventral view); D. Left pedipalp (minus chela, dorsal view); E. Rallum. Scale bars: 0.20 mm (A–B, D); 0.10 mm (C, E).
FIGURE 112 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 112. Tyrannochthonius quattuor sp. nov., A. Holotype male, habitus (dorsal view); B. Paratype female, habitus (dorsal view).
FIGURE 108 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 108. Tyrannochthonius qilinensis sp. nov., holotype female (A–F): A. Left chela (lateral view); B. Left chela (dorsal view); C. Carapace (dorsal view); D. Left chelicera (dorsal view); E. Female genital area (ventral view); F. Left pedipalp (minus chela, dorsal view).
FIGURE 121 in Diversity of cave-dwelling pseudoscorpions from Guizhou in China, with the description of twenty-four new species of the genus Tyrannochthonius (Pseudoscorpiones, Chthoniidae)
FIGURE 121. Yanshan Cave, type locality of Tyrannochthonius yanshanensis sp. nov., A. Entrance; B–C. Passage and area where T. yanshanensis sp. nov. specimens were collected (red arrow); D. Live female of T. yanshanensis sp. nov. in its natural environment.
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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.