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94 results for “X-ray micro-CT”
Supplementary material 12 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
3D PDF 12 : Explanation note: Zasphinctus wilsoni sp. n. holotype worker (MCZ-ENT-00512764). 3D PDF of volumetric surface rendering model of metasoma (virtually separated from mesosoma and most of legs virtually removed).
Supplementary material 13 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
3D PDF 13 : Explanation note: Zasphinctus sarowiwai sp. n. worker (CASENT0764652). 3D PDF of volumetric surface rendering of segmented mouthparts excluding mandibles (green= maxillae; yellow=labrum; orang=labium).
Romanesco X-ray micro-CT dataset
<p>X-ray micro-CT dataset of a romanesco cauliflower acquired on a Nikon XTH 225 at the 3D Imaging Center at the Technical University of Denmark (DTU). </p> <p><strong>romanesco.zip: </strong>The raw projection data as TIFF files along with geometric metadata.</p> <p><strong>romanesco_recon_2.zip:</strong> Reconstructed volume data using the Nikon software saved in binary format.</p> <p> </p> <p>Reconstruction can be carried out using for example the Core Imaging Library (CIL), <a href="https://ccpi.ac.uk/cil/">https://ccpi.ac.uk/cil/</a>, by loading in the data using the CIL NikonDataReader.</p>
Data from: Revision of Icacinaceae from the Early Eocene London Clay flora based on X-ray micro-CT
The Early Eocene (Ypresian) London Clay Formation contains one of the most important fruit and seed assemblages from the Paleogene, including a large diversity of taxa (>350 spp.) preserved as pyrite permineralizations retaining 3D structure as well as anatomical detail. Despite the importance of the flora for understanding angiosperm biogeographic and evolutionary history, the majority of the fossil material has not been revisited since the original taxonomic treatments by E.M. Reid and M.E.J. Chandler. Given subsequent advances in our understanding of angiosperm phylogeny and fruit morphology, coupled with technological advances in imaging/visualizing fossil material, many of the taxa represented in the flora deserve further study. Here we present a revision of the pantropical family Icacinaceae using X-ray micro-computed tomography (micro-CT) images of 21 species from the flora. Based on the results, four new combinations are made, a new fossil-genus is established for a distinctive species with affinities to the Phytocreneae, and emended diagnoses are provided for eight taxa. Of the seven genera recognized from the flora, only one, Iodes Blume, is extant. This study offers important insights on the biogeographic and evolutionary history of Icacinaceae, which is one of the most abundant and diverse components of the flora from the London Clay Formation.
Data from: Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics
New technologies for imaging and analysis of morphological characters offer opportunities to enhance revisionary taxonomy and better integrate it with the rest of biology. In this study, we revise the Afrotropical fauna of the ant genus Zasphinctus Wheeler, and use high-resolution X-ray microtomography (micro-CT) to analyse a number of morphological characters of taxonomic and biological interest. We recognise and describe three new species: Z. obamai sp. n., Z. sarowiwai sp. n., and Z. wilsoni sp. n. The species delimitations are based on the morphological examination of all physical specimens in combination with 3D scans and volume reconstructions. Based on this approach, we present a new taxonomic discrimination system for the regional fauna that consists of a combination of easily observable morphological characters visible at magnifications of around 80–100 ×, less observable characters that require higher magnifications, as well as characters made visible through virtual dissections that would otherwise require destructive treatment. Zasphinctus are rarely collected ants and the material available to us is comparatively scarce. Consequently, we explore the use of micro-CT as a non-invasive tool for the virtual examination, manipulation, and dissection of such rare material. Furthermore, we delineate the treated species by providing a diagnostic character matrix illustrated by numerous images and supplement that with additional evidence in the form of stacked montage images, 3D PDFs and 3D rotation videos of scans of major body parts and full body (in total we provide 16 stacked montage photographs, 116 images of 3D reconstructions, 15 3D rotation videos, and 13 3D PDFs). In addition to the comparative morphology analyses used for species delimitations, we also apply micro-CT data to examine certain traits, such as mouthparts, cuticle thickness, and thoracic and abdominal muscles in order to assess their taxonomic usefulness or gain insights into the natural history of the genus. The complete datasets comprising the raw micro-CT data, 3D PDFs, 3D rotation videos, still images of 3D models, and coloured montage photos have been made available online as cybertypes (Dryad, http://dx.doi.org/10.5061/dryad.4s3v1).
Supplementary material S1. Henoticus groehni sp. nov., holotype, No. 5087 [GPIH], X-ray micro-CT volume rendering of the habitus.
<p>Supplementary material S1 in paper: Bukejs A., Lyubarsky G.Yu., Alekseev V.I. The oldest fossil species of the genus <em>Henoticus</em> Thomson (Coleoptera: Cryptophagidae) from Eocene Baltic amber. <em>Historical Biology</em>.</p> <p> </p>
Supplementary material S2. Henoticus groehni sp. nov., holotype, No. 5087 [GPIH], X-ray micro-CT volume rendering of the habitus without legs.
<p>Supplementary material S2 in paper: Bukejs A., Lyubarsky G.Yu., Alekseev V.I. The oldest fossil species of the genus Henoticus Thomson (Coleoptera: Cryptophagidae) from Eocene Baltic amber. Historical Biology.</p> <p> </p>
SC4CT-2023: X-ray micro-CT datasets of Rubik's cube, Lego Gandalf, match head and frozen mouse.
<p>Four micro CT datasets acquired at the Technical University of Denmark in January 2023. Each dataset consists of zip-file containing both projection and vendor reconstruction data along with geometric metadata. </p> <p>The datasets were acquired by teachers and students of the DTU course Scientific Computing for Computed Tomography (SC4CT) in January 2023, <a href="https://people.compute.dtu.dk/pcha/HDtomo/SCforCT.html">https://people.compute.dtu.dk/pcha/HDtomo/SCforCT.html</a></p> <p> </p> <p><strong>Rubrics cube:</strong> Nikon micro-CT dataset of a Rubik's cube, showing the internal plastic and metal mechanisms.</p> <p><strong>Frosen mouse:</strong> Nikon micro-CT dataset of a frozen mouse. The sample slipped during the scan so contain a few movement artifacts which may be removed if using only short-scan data.</p> <p><strong>Match:</strong> Zeiss micro-CT dataset of a match head showing the constituents of the head.</p> <p><strong>Wizard:</strong> Zeiss micro-CT dataset of a Lego Gandalf mini figure with cape and staff.</p> <p> </p> <p>Reconstruction from the raw projection data can for example be done using the Core Imaging Library (CIL), <a href="https://ccpi.ac.uk/cil/">https://ccpi.ac.uk/cil/</a>, reading in the data using either the CIL ZeissDataReader or NikonDataReader.</p> <p> </p>
Data from: Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics
Open the record for dataset details and reuse information.
Data from: Revision of Icacinaceae from the Early Eocene London Clay flora based on X-ray micro-CT
Open the record for dataset details and reuse information.
Supplementary material 23 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Video 10 : Data type: Video File (.mov)
Figure 1 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 1 - Schematic line drawings illustrating the measurements used in this study. A Body in profile with measuring lines for PH, PTH, and WL B Mesosoma and metasoma in dorsal view with measuring lines for A3L, A3W, A4L, A4W, A5L, A5W, A6L, A6W, DML, PW, PTL, and PTW C Head in full-face view with measuring lines for HL, HW, and SL D Metafemur in dorsal view with measuring line for MFL.
Figure 12 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 12 - Shaded surface display volume renderings of 3D models of Zasphinctus wilsoni sp. n. holotype worker (MCZ-ENT-00512764). A Head in full-face dorsal view B Head in anterodorsal view C Anterior cephalic dorsum and mandibles in anterodorsal view D Head in ventral view. E Occiput in posterior view (ventral head facing upwards) F Head in posterodorsal view G Mesosoma in profile H Mesosoma in dorsal view I Abdominal segment II (petiole) in profile J Abdominal segment II (petiole) in dorsal view K Abdominal segment II (petiole) in ventral view L Abdominal segments III–VII in profile M Abdominal segments III and IV in dorsal view N Abdominal segments V–VII in dorsal view O Abdominal segments III–VII in ventral view.
Figure 10 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 10 - Shaded surface display volume renderings of 3D models of Zasphinctus sarowiwai sp. n. holotype worker (CASENT0764654). A Head in full-face dorsal view B Head in anterodorsal view C Anterior cephalic dorsum and mandibles in anterodorsal view D Head in ventral view E Occiput in posterior view (ventral head facing upwards) F Head in posterodorsal view G Mesosoma in profile H Mesosoma in dorsal view I Abdominal segment II (petiole) in profile J Abdominal segment II (petiole) in dorsal view K Abdominal segment II (petiole) in ventral view L Abdominal segments III–VII in profile M Abdominal segments III and IV in dorsal view N Abdominal segments V–VII in dorsal view O Abdominal segments III–VII in ventral view.
Figure 13 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 13 - Shaded surface display volume renderings of 3D models of mouthparts (excluding mandibles) in closed configuration (green=maxillae; yellow=labrum; orange=labium). A Zasphinctus obamai sp. n. (CASENT0764127) B Zasphinctus sarowiwai sp. n. (CASENT0764654) C Zasphinctus wilsoni sp. n. (MCZ-ENT-00512764).
Figure 14 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 14 - Volumetric 3D model of segmented surface reconstructions of the mouthparts of Zasphinctus sarowiwai sp. n. (CASENT0764652) in open configuration (green=maxillae; yellow=labrum; orange=labium). A Frontal view B Lateral view C Posterior view D Dorsal view.
Figure 15 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 15 - Still images of 3D model of full body of Zasphinctus sarowiwai sp. n. holotype worker (CASENT0764654). False-colour volume rendering of segmented mesosoma and metasoma musculature (red) and sting apparatus (green) superimposed on semi-transparent surface model (A, C, E) or stand-alone (B, D, F). A, B Body in profile view C, D Body in dorsal view E, F Body in posterodorsal view.
Figure 5 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 5 - Illustrated diagnostic character matrix based on micro-CT images used for species delimitations (Z. obamai = left column, Z. sarowiwai = middle column, Z. wilsoni = right column). A, B, C Posterior head in ventral view showing ventral occipital margin (virtually dissected) D, E, F Head in ventral view showing mouthparts and hypostoma (virtually dissected). G, H, I Mesosoma in profile (orange) with pleural endophragmal pit (green) J, K, L Mesosoma in dorsal view M, N, O Petiole in profile showing petiolar tergum (green) and petiolar sternum (orange) with subpetiolar process P, Q, R Petiole in dorsal view.
Figure 3 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 3 - Map of sub-Saharan Africa showing the known distribution of the Z. obamai sp. n., Z. sarowiwai sp. n., and Z. wilsoni sp. n.
Figure 9 from: Hita Garcia F, Fischer G, Liu C, Audisio TL, Economo EP (2017) Next-generation morphological character discovery and evaluation: an X-ray micro-CT enhanced revision of the ant genus Zasphinctus Wheeler (Hymenoptera, Formicidae, Dorylinae) in the Afrotropics. ZooKeys 693: 33-93. https://doi.org/10.3897/zookeys.693.13012
Figure 9 - Zasphinctus sarowiwai sp. n. paratype worker (CASENT0764650). A Body in profile B Body in dorsal view C Head in full-face view D Abdominal segments III–VI in dorsal view.
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