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160 results for “sea snakes”
Data from: Temporal and spatial activity-associated energy partitioning in free-swimming sea snakes
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Divergence in life-history traits among three populations of the sea snake Emydocephalus anulatus
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Data from: Recent rapid speciation and ecomorph divergence in Indo-Australian sea snakes
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Data from: Rates of population differentiation and speciation are decoupled in sea snakes
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Population dynamics of the sea snake Emydocephalus annulatus
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Sea snake approaches to divers
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Peaceful coexistence between people and deadly wildlife: why are recreational users of the ocean so rarely bitten by sea snakes?
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- *4K* Video - Yellow-Bellied Sea Snake (Hydrophis platurus) head and brain 3D rendering
<p>4K movie displaying the 3D rendering of the head and both the morphological features and spatial organization of the main encephalic subdivisions of the Yellow-Bellied Sea Snake. 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 videos 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>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>
Data from: Loss of olfaction in sea snakes provides new perspectives on the aquatic adaptation of amniotes
Marine amniotes, a polyphyletic group, provide an excellent opportunity for studying convergent evolution. Their sense of smell tends to degenerate, but this process has not been explored by comparing fully-aquatic species with their amphibious relatives in an evolutionary context. Here, we sequenced the genomes of fully-aquatic and amphibious sea snakes, and identified repertoires of chemosensory receptor genes involved in olfaction. Snakes possess large numbers of the olfactory receptor (OR) genes and the type-2 vomeronasal receptor (V2R) genes, and expression profiling in the olfactory tissues suggests that snakes use the ORs in the main olfactory system (MOS) and the V2Rs in the vomeronasal system (VNS). The number of OR genes has decreased in sea snakes, and fully-aquatic species lost the MOS which is responsible for detecting airborne odors. In contrast, sea snakes including fully-aquatic species retain a number of V2R genes and a well-developed VNS for smelling underwater. This study suggests that the sense of smell also degenerated in sea snakes, particularly in fully-aquatic species, but their residual olfactory capability is distinct from that of other fully-aquatic amniotes. Amphibious species show an intermediate status between terrestrial and fully-aquatic snakes, implying their importance in understanding the process of aquatic adaptation.
FIGURE 6 in Sea snakes (Serpentes: subfamilies Hydrophiinae and Laticaudinae) in Vietnam: a comprehensive checklist and an updated identification key
FIGURE 6. Head of Pelamis platura, showing the laterally flattened snout (drawing M. Andersen).
FIGURE 8 in Sea snakes (Serpentes: subfamilies Hydrophiinae and Laticaudinae) in Vietnam: a comprehensive checklist and an updated identification key
FIGURE 8. Head of Acalyptophis peroni showing the spines on the head shields (drawing M. Andersen).
Fig. 5 in Meiofaunal Biodiversity In A Marine Protected Area: A Case Study In The Rocky And Sedimentary Shores Of The Snake Island (North-Western Black Sea)
Fig. 5. The average density (N, means ± SE ind.·m–2) and biomass (B, means ± SE mg·m–2) of each meiobenthic taxon in the different habitats of the Snake Island MPA (Black Sea).
Figure 2 from: Bessesen BL, Galbreath GJ (2017) A new subspecies of sea snake, Hydrophis platurus xanthos, from Golfo Dulce, Costa Rica. ZooKeys 686: 109-123. https://doi.org/10.3897/zookeys.686.12682
Figure 2 - Hydrophis platurus xanthos sharply contrasts typical H. platurus in color, body size and behavior. A Scaled size comparison of yellow sea snake, TL 43 cm (left), and yellow-bellied sea snake, TL 69 cm (right; note the use of Vetrap as a calming mask and sickly condition of the specimen) B ambush posture of H. p. xanthos; floating at the sea surface at night in a sinusoidal shape, head below, mouth agape C although predominantly yellow, xanthic individuals often possess black spots along the dorsum.
Figure 1 from: Bessesen BL, Galbreath GJ (2017) A new subspecies of sea snake, Hydrophis platurus xanthos, from Golfo Dulce, Costa Rica. ZooKeys 686: 109-123. https://doi.org/10.3897/zookeys.686.12682
Figure 1 - GPS sighting points for all sea snakes observed in Golfo Dulce during the 2010 and 2011 distribution study show Hydrophis platurus xanthos to reside in the inner basin, geographically divided from the broader Eastern Pacific population (Bessesen 2012, 2015).
Figure 4 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 4 - Various shapes of ventrals on the mid-body of sea snakes of the genus Hydrophis in the Persian Gulf and Gulf of Oman: a wide and enlarged, more or less rectangular in shape (Hydrophis viperinus) b medium size, distinguishable from the adjacent scales, more or less hexagonal in shape (Hydrophis curtus) c and d small and slightly distinguishable from adjacent scales (Hydrophis ornatus and Hydrophis lapemoides, respectively) e and f small and more or less indistinguishable from adjacent scales (Hydrophis schistosus and Hydrophis platurus, respectively).
Figure 24 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 24 - Microcephalophis gracilis: a lateral view b dorsal view, and c ventral view of head d body.
Figure 26 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 26 - Microcephalophis cantoris: a lateral view b dorsal view, and c ventral view of head d body.
Figure 3 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 3 - Rostrals and mentals of sea snakes of the genus Hydrophis in the Persian Gulf and Gulf of Oman: a tip of rostral decurved, pointed and beaked shaped, mental narrow, elongate and dagger-shaped (Hydrophis schistosus) b and c tip of rostral markedly tridentate, mental short and triangulate (Hydrophis viperinus and Hydrophis curtus, respectively) d tip of rostral markedly unidentate, mental short and triangulate (Hydrophis ornatus) e–h tip of rostral slightly unidentate, mental short and triangulate (Hydrophis ornatus, Hydrophis spiralis, Hydrophis cyanocinctus and Hydrophis platurus, respectively).
Figure 19 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 19 - Hydrophis cyanocinctus: a lateral view b dorsal view, and c ventral view of head d body.
Figure 22 from: Rezaie-Atagholipour M, Ghezellou P, Hesni MA, Dakhteh SMH, Ahmadian H, Vidal N (2016) Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman. ZooKeys 622: 129-164. https://doi.org/10.3897/zookeys.622.9939
Figure 22 - Hydrophis lapemoides: a body of a specimen examined in this study b living individual in coastal waters of Abu Dhabi, UAE, eastern Persian Gulf, depth 10 m, June 2015 (photographed by Rima W. Jabado).
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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.