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130 results for “Boa”
Rainbow Boa (Epicrates cenchria) snake brain illustration
<p>3D model of the Rainbow Boa snake brain highlighting the anatomy and the spatial arrangement of its major subdivisions.</p> <p>The brain reconstruction was obtained from a microCT scan of a iodine-stained specimen through manual segmentation using the software Amira 5.5.0.</p> <p>Other illustrations can be found <strong><a href="https://zenodo.org/search?page=1&size=20&q=keywords:%22squamate%20brain%22">here</a></strong>.</p> <p><em>If you are interested in reptile brain evolution and behavior, please, have a look to our recent publication:</em></p> <p><a href="https://www.nature.com/articles/s41467-019-13405-w"><em><strong>"Comparative analysis of squamate brains unveils multi-level variation in cerebellar architecture associated with locomotor specialization"</strong></em></a></p> <p><strong>Simone Macrì, Yoland Savriama, Imran Khan & Nicolas Di-Poï</strong></p> <p><em>Nature Communications</em> <strong>10, </strong>5560 (2019)</p> <p> </p> <p><em>Check out also our *4K* video collection of various snake and lizard 3D brains:</em></p> <p><strong><a href="https://www.youtube.com/playlist?list=PLgx4vtT32C8hqxG_icKiuXGtZVLVX-oG1">Snake and Lizard brain reconstructions video collection</a></strong></p> <p> </p> <p>For any inquiries or additional information, please, refer to the contacts provided in the <strong><a href="https://www.nature.com/articles/s41467-019-13405-w">article</a></strong>.</p>
Figure 3 in Aspects of natural history in a sand boa, Eryx muelleri (Erycidae) from arid savannahs in Burkina Faso, Togo, and Nigeria (West Africa)
Figure 3. Relationships between (a) Snout-Vent-Length (SLV) and Tail Length (TL), and between (b) SVL and Head Length (HL) in Eryx muelleri. Specimens from Togo, Burkina Faso and Nigeria were pooled.
Figure 1 in Aspects of natural history in a sand boa, Eryx muelleri (Erycidae) from arid savannahs in Burkina Faso, Togo, and Nigeria (West Africa)
Figure 1. (a) Eryx muelleri from Kebbe, north-western Nigeria (Photo: Luca Luiselli); (b) dry savannah habitat of Eryx muelleri in northern Burkina Faso (Photo: Emmanuel Hema).
Figure 4 in A new dwarf boa (Serpentes, Booidea, 'Tropidophiidae') from the Early Oligocene of Belgium: a case of the isolation of Western European snake faunas
Figure 4. Trunk/caudal transition in Falseryx petersbuchi, in left lateral view: A, posterior trunk vertebra (BSP, 1976 XXII 6127); B, fusion of last trunk, 1st cloacal and 2nd cloacal vertebrae (BSP, uncatalogued); C, anterior caudal vertebra (SMNS, 57898-3). Abbreviations: h, hypapophysis; hk, haemal keel; ls, lymphapophyses; pd, paradiapophysis; pl, pleurapophysis. A and C from Szyndlar & Rage (2003: fig. 27C, P).
Figure 1 in A new dwarf boa (Serpentes, Booidea, 'Tropidophiidae') from the Early Oligocene of Belgium: a case of the isolation of Western European snake faunas
Figure 1. Holotype middle trunk vertebra of Falseryx neervelpensis sp. nov. (IRSNB R 240), in right lateral (A), left lateral (B), dorsal (C), ventral (D), anterior (E) and posterior (F) views. Abbreviations: cd, condyle; ct, cotyle; d, diapophysis; hk, haemal keel; lf, lateral foramen; na, neural arch; nc, neural canal; ns, neural spine; p, parapophysis; pd, paradiapophysis (diapophysis + parapophysis); po, postzygapophysis; poa, postzygapophyseal articular surface; pr, prezygapophysis; pra, prezygapophyseal articular surface; prp, prezygapophyseal process; sf, subcentral foramen; sg, subcentral groove; sr, subcentral ridge; z, zygosphene; zy, zygantrum.
Figure 2 in A new dwarf boa (Serpentes, Booidea, 'Tropidophiidae') from the Early Oligocene of Belgium: a case of the isolation of Western European snake faunas
Figure 2. Trunk vertebrae of Falseryx neervelpensis sp. nov. A–C, anterior trunk vertebra (IRSNB R 239), in right lateral (A), anterior (B) and dorsal (C) views; D–F, middle trunk vertebra (IRSNB R 241), in left lateral (D), dorsal (E) and ventral (F) views; G–K, posterior trunk vertebra (IRSNB R 237), in right lateral (G), dorsal (H), ventral (I), anterior (J) and posterior (K) views; L–P, one of the final trunk vertebrae (IRSNB R 238), in left lateral (L), dorsal (M), ventral (N), anterior (O) and posterior (P) views. Abbreviation: h, hypapophysis.
Data and code from: Spatial ecology of the Turks & Caicos boa, Chilabothrus c. chrysogaster Cope, 1871 (Serpentes: Boidae)
<p><span>Obtaining ecological and natural history data from cryptic squamates can be challenging, but is crucial to understanding species' biology, particularly in the context of conservation. In the Greater Antilles, this challenge is especially apparent, particularly among the West Indian boas (genus <em>Chilabothrus</em>). Most species have had only minimal natural history study, with a few exceptions. The Turks & Caicos boa (<em>C. chrysogaster</em>) has been studied intensively for over 16 years on the small privately owned island of Big Ambergris Cay, Turks and Caicos Islands. We conducted a multi-year radio-tracking study on the species to generate information relevant to spatial habitat use and movement that will inform conservation decision-making in the face of increasing development pressure. We tracked a total of 19 female snakes using surgically implanted transmitters, enabling us to obtain between 16 and 40 location observations per boa over the lifetime of each transmitter. We estimated home ranges, the core space used by an animal, using range distributions, finding that females have a home range of 0.70 ha to 1.2 ha. We also estimated occurrence distributions, the use of space between specific time intervals, finding an average occurrence area of 1.62 ha. Several females overlapped in their spatial habitat use, and we observed female boas using two novel habitats for the species (iron shore wrack and red mangrove). This study provides valuable information on the spatial ecology of an endangered boa and will serve to inform conservation work that is currently underway. </span></p>
GPS data for COPEX campaign carried out in 2002 in Brazil by INPE (Boa Vista Station)
<p>This repository provides the GPS data acquired in Boa Vista station during the Conjugate Point Equatorial Experiment (COPEX) campaign in 2002. In the folders it can find the raw intensity data (FSL file) and also the summary files (SUM files), containing only with S4 index with time and satellite ID. More information about the campaign can be found in Muella et al. (2008), Abdu et al. (2009) and de Paula et al. (2010). Information about the data recording format and reading extraction procedure of this dataset can be found in Appendix B of Beach (1998). More details regarding the receiver used and extraction tools can be found at: <a href="https://gps.ece.cornell.edu/tools.php">https://gps.ece.cornell.edu/tools.php</a></p> <p>Abdu, M. A., Batista, I. S., Reinisch, B. W., De Souza, J. R., Sobral, J. H. A., Pedersen, T. R., ... & Groves, K. M. (2009). Conjugate Point Equatorial Experiment (COPEX) campaign in Brazil: Electrodynamics highlights on spread F development conditions and day‐to‐day variability. Journal of Geophysical Research: Space Physics, 114(A4).</p> <p>Beach, T. L. (1998). Global Positioning System studies of equatorial scintillations. Cornell University.</p> <p>De Paula, E. R., Muella, M. T. A. H., Sobral, J. H. A., Abdu, M. A., Batista, I. S., Beach, T. L., & Groves, K. M. (2010). Magnetic conjugate point observations of kilometer and hundred‐meter scale irregularities and zonal drifts. Journal of Geophysical Research: Space Physics, 115(A8).</p> <p>Muella, M. T. A. H., De Paula, E. R., Kantor, I. J., Batista, I. S., Sobral, J. H. A., Abdu, M. A., ... & Smorigo, P. F. (2008). GPS L-band scintillations and ionospheric irregularity zonal drifts inferred at equatorial and low-latitude regions. Journal of Atmospheric and Solar-Terrestrial Physics, 70(10), 1261-1272.</p>
Manual de boas-vindas aos estagiários de enfermagem em um novo setor
<p><span>A partir da perspectiva das acadêmicas e dos profissionais que recebem o estudante no setor, foi possível elaborar o presente manual com o objetivo de instruir a equipe para o recebimento e adequação dos novos estagiários.</span></p>
Figure 1 in Histological data on bone and teeth in two dragonfishes (Stomiidae; Stomiiformes): Borostomias panamensis Regan & Trewavas, 1929 and Stomias boa Reinhardt, 1842
Figure 1. – Stomias boa. Cleared and double-stained specimen. Lateral view of the skull showing the jaws with their long sharp teeth (arrow-heads), the suspensorium, the shoulder girdle, and the anterior part of the vertebral column. cl: cleithrum; dt: dentar; hy: hyomandibular; pmx: premaxillary; vt: vertebral column. Scale bar = 2 mm.
Figure 4 in Histological data on bone and teeth in two dragonfishes (Stomiidae; Stomiiformes): Borostomias panamensis Regan & Trewavas, 1929 and Stomias boa Reinhardt, 1842
Figure 4. – Borostomias panamensis (Azan). A: Section of a visceral arch showing the numerous vascular cavities (vc) limited by relatively thin bony trabeculae. No embedded osteocytes are seen in the bony tissue (bo). The two arrowheads point to resorbing bone. B: Cross section of a vertebra showing a cartilaginous neural arch fused to the bony vertebral centrum. The cartilaginous tissue (car) is surrounded by a perichondral layer (pcb) of acellular bone. cho: chordal tissue: vc: vascular cavity. Scale bars: A = 50 μm; B = 50 μm.
Figure 2 in Histological data on bone and teeth in two dragonfishes (Stomiidae; Stomiiformes): Borostomias panamensis Regan & Trewavas, 1929 and Stomias boa Reinhardt, 1842
Figure 2. – Stomias boa. Tomographic imaging of the right jaw. A: Three-dimensional reconstruction of the external (labial side) anterior part of the jaw, showing a caniniform tooth. The external surface of the tooth is smooth (asterisk). The arrowhead and the arrow point to the unmineralized ligament of the fang and to a small tooth, respectively. B: Virtual parasagittal section of the anterior part of the jaw showing the pulp cavity of the same tooth than in Fig. 2A. The walls of the pulp cavity are perfectly smooth (asterisk). Both arrowheads point to the unmineralized ligament of the tooth. Dt: dentar. Scale bars = 1 mm.
Fig. 1 in A noteworthy locality of the javelin sand boa (Eryx jaculus Linnaeus, 1758) in Southern Bulgaria
Fig. 1. Javelin sand boas observed in the study area. 1, 8, and 10 - juveniles, 2 and 3 - half basking. 4 - the studied habitat, 5, 6, 7, and 9 - adult individuals.
Fig. 2. Cox1 in Sarcocystis sp. shed by the common boa snake (Boa constrictor) in Brazil
Fig. 2. Cox1-based evolutionary analysis of Sarcocystis spp.: The tree was inferred by using the Maximum Likelihood method and Tamura 3-parameter model. A discrete Gamma distribution was used to model evolutionary rate differences among sites. The tree with the highest log likelihood is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches. This analysis involved 31 nucleotide sequences. All positions containing gaps and missing data were eliminated (complete deletion option). Branches marked with (•) contain sequences detected in snakes. The numbers between parenthesis represent the number of identical sequences at each terminal node. The names between parenthesis represent the hosts in which each sequence at terminal node was found. There were 807 positions in the final dataset. Evolutionary analyses were conducted in MEGA X.
Fig. 1 in Sarcocystis sp. shed by the common boa snake (Boa constrictor) in Brazil
Fig. 1. Sporocyst of Sarcocystis sp. shed by a common boa (Boa constrictor) in Bahia, Brazil. Four elongated sporozoites and a round residual body are observed inside the sporocyst. Bar = 10 μm.
Fig. 3. 18S in Sarcocystis sp. shed by the common boa snake (Boa constrictor) in Brazil
Fig. 3. 18S-based evolutionary analysis of Sarcocystis spp.: the tree was inferred by using the Maximum Likelihood method and Tamura 3-parameter model. A discrete Gamma distribution was used to model evolutionary rate differences among sites. The tree with the highest log likelihood is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches. This analysis involved 69 nucleotide sequences. All positions containing gaps and missing data were eliminated (complete deletion option). Branches marked with (•) contain sequences detected in snakes. The names between parenthesis represent the hosts in which each sequence at terminal node was found. There was a total of 624 positions in the final dataset. Evolutionary analyses were conducted in MEGA X.
FIG. 3 in Boa latotecta Hermann, 1804, a junior subjective synonym of Bungarus caeruleus (Schneider, 1801) (Serpentes, Elapidae), with comments on the types of the latter taxon
FIG. 3. — Handwritten notes on Boa latotecta Hermann, 1804 by F. L. Hammer. Several notes were added at a later time by subsequent curators.
FIG. 1 in Boa latotecta Hermann, 1804, a junior subjective synonym of Bungarus caeruleus (Schneider, 1801) (Serpentes, Elapidae), with comments on the types of the latter taxon
FIG. 1. — Russell's (1796) illustration of the "Gedi Paragoodoo"; the specimen depicted is one of the syntypes of Pseudoboa caerulea Schneider, 1801.
Linked collectors and determiners for: A time relic: a new species of dwarf boa, Tropidophis Bibron, 1840 (Serpentes: Amerophidia), from the Upper Amazon Basin.
Natural history specimen data linked to collectors and determiners held within, "A time relic: a new species of dwarf boa, Tropidophis Bibron, 1840 (Serpentes: Amerophidia), from the Upper Amazon Basin". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/9333695a-96ff-4ffe-a639-b75433682bee">https://bionomia.net/dataset/9333695a-96ff-4ffe-a639-b75433682bee</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/9333695a-96ff-4ffe-a639-b75433682bee">https://gbif.org/dataset/9333695a-96ff-4ffe-a639-b75433682bee</a>. Formatted as a Frictionless Data package.
Figure 12 in Revision of the cranial anatomy and phylogenetic relationships of the Eocene minute boas Messelophis variatus and Messelophis ermannorum (Serpentes, Booidea)
Figure 12. Palatine bone of Messelophis ermannorum (SMF ME 11426) coated with ammonium chloride (A), and three-dimensional reconstruction of the palatomaxillary bar components of the boid Chilabothrus striatus based on HRXCT data (B). Scale bars: 2 mm. Abbreviations: anp, anterior (dentigerous) process; chp, choanal process; mfp, medial foot process; mx, maxilla; mxp, maxillary process; pap, palatine process; pt, pterygoid.
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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.