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2,345 results for “shark”
Data from: Estimation of regional annual abundance and evidence for increasing numbers of white sharks off central California
<p>Raw data consisting of individual identification photographs of white sharks (Carcharodon carcharias) and data table with corresponding metadata. These data support PhD thesis of Paul E. Kanive entitled "VITAL RATES, ANNUAL ABUNDANCE, AND MOVEMENT OF WHITE SHARKS IN THE NORTHEASTERN PACIFIC" and peer-reviewed manuscript "Estimation of regional annual abundance and evidence for increasing numbers of white sharks off central California."</p>
Video files linked in Coleman and Burge, "Association behavior between sand tiger sharks and round scad is driven by mesopredators"
<p>Videos referred to in the Results, Table 1, Figure 2, and Figure 3 of Coleman and Burge "Association behavior between sand tiger sharks and round scad is driven by mesopredators" are included here. Table S2 lists a description of each video (Descriptions), date (Date of occurrence) and time (Clock time of occurrence) of footage, a timing reference to the description within the video (video time), and a link to Youtube (Video reference) of the same footage. Note that file uploads for videos for views of the field site at Frying Pan Tower (in Materials and Methods and Table S2; <a href="https://www.youtube.com/playlist?list=PLK1g13VpyT6oYUJL7U3hRPlt2U5L_mcKL">https://www.youtube.com/playlist?list=PLK1g13VpyT6oYUJL7U3hRPlt2U5L_mcKL</a>) are not included with these uploads as no data or observations are derived from these videos.</p>
Data from: Shark movement strategies influence poaching risk and can guide enforcement decisions in a large, remote Marine Protected Area
<ol> <li>Large, remote marine protected areas (MPAs) containing both reef and pelagic habitats, have been shown to offer considerable refuge to populations of reef-associated sharks. Many large MPAs are, however, impacted by illegal fishing activity conducted by unlicensed vessels. While enforcement of these reserves is often expensive, it would likely benefit from the integration of ecological data on the mobile animals they are designed to protect. Consequently, shark populations in some protected areas continue to decline, as they remain a prime target for illegal fishers.</li> <li>To understand shark movements and their vulnerability to illegal fishing, three years of acoustic tracking data, from 101 reef-associated sharks, were analysed as movement networks to explore the predictability of movement patterns and identify key movement corridors within the British Indian Ocean Territory (BIOT) MPA. We examined how space use and connectivity overlap with spatially-explicit risk of illegal fishing, through data obtained from the management consultancy enforcing the MPA.</li> <li>Using individual-based models, the movement networks of two sympatric shark species were efficiently predicted with distance-decay functions (>95% movements accurately predicted). Model outliers were used to highlight the locations with unexpectedly high movement rates where MPA enforcement patrols might most efficiently mitigate predator removal.</li> <li>Activity space estimates and network metrics illustrate that silvertip sharks were more dynamic, less resident and link larger components of the MPA than grey reef sharks. However, we show that this behaviour potentially enhances their exposure to illegal fishing activity.</li> <li> <i>Synthesis and applications. </i>Marine protected area (MPA) enforcement strategies are often limited by resources. The British Indian Ocean Territory MPA, one of the world's largest 'no take' MPAs, has a single patrol vessel to enforce 640,000 km<sup>2</sup> of open ocean, atoll and reef ecosystems. We argue that to optimise the patrol vessel search strategy and thus enhance their protective capacity, ecological data on the space use and movements of desirable species, such as large-bodied reef predators, must be incorporated into management plans. Here, we use electronic tracking data to evaluate how shark movement dynamics influence species mortality trajectories in exploited reef ecosystems. In doing so we discuss how network analyses of such data might be applied for protected area enforcement.</li> </ol>
Fig. 64 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 64. ''Cobelodus''. Left side of head, with a reconstruction of main musculature associated with the jaws. No scale.
Fig. 63 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 63. ''Cobelodus''. Left side of head skeleton, with a reconstruction of the jaws and hyoid arch. No scale.
Fig. 62 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 62. Two early osteichthyan neurocrania in lateral view, showing positions of landmark features associated with the embryonic polar cartilage and antotic pila in modern gnathostomes. A, The primitive actinopterygian Ligulalepis sp., left side (after Basden and Young, 2001); B, The primitive sarcopterygian Achoania jarviki, right side of ethmosphenoid region (after Zhu et al., 2001; position of oculomotor foramen inferred from Psarolepis romeri, after Yu, 1998). Scale bars 5 5 mm.
Fig. 60 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 60. Cladoselache sp., CMNH 5611, Cleveland Shale, Berea, Ohio. Ventral view of braincase lacking postorbital processes. Scale bar 5 10 mm.
Fig. 59. Cladoselache kepleri, CMNH 6233 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 59. Cladoselache kepleri, CMNH 6233, Cleveland Shale, Berea, Ohio. Ventral view of braincase partly overlain by palatoquadrate. Scale bar 5 10 mm.
Fig. 58. Cladoselache kepleri, CMNH 5769 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 58. Cladoselache kepleri, CMNH 5769, Cleveland Shale (late Devonian), Berea, Ohio. Ventral view of braincase. Scale bar 5 10 mm.
Fig. 47 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 47. Cobelodus aculeatus FMNH PF 7345. Silicone peel of braincase dorsal surface, anterior to top
Fig. 51 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 51. Outline dorsal views of the braincase in three specimens that have been referred to Stethacanthus, all from the Bear Gulch Limestone (Chesterian, late Pennsylvanian). A, Specimen referred to S. altonensis, MV 2830 (from Lund, 1974: fig. 3); B, specimen referred to S. cf. S. altonensis (from Lund, 1985: fig. 4); C, specimen referred to S. cf. S. productus (from Lund, 1985: fig. 1). Anterior to top. The original illustrations have been adjusted to approximately the same scale (scale bar 5 10 mm). See text for details.
Fig. 55 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 55. Falcatus falcatus MV 4793, part and counterpart, Bear Gulch Limestone. Head in lateral view
Fig. 39 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 39. Cobelodus aculeatus FMNH PF 7347. Enlarged image of braincase, positive print from an original X-ray by R. Zangerl. Scale bar 5 10 mm.
Fig. 42 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 42. ''Cobelodus'' contour-based surface rendering, ventral view with clipping plane introduced to remove parts of the basicranium, exposing the canal for the palatine ramus and the glossopharyngeal canal. Collapse of the basicranium below these structures (dashed white lines) creates paired ridges and depressions in compression fossils (see fig. 37).
Fig. 38. A in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 38. A new silicone cranial endocast of Cobelodus aculeatus FMNH PF 3090. A, lateral view, right side; B, anterior view; C, dorsal view; D, ventral view; E, posterior view.
Fig. 32 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 32. Lateral view of the endocast in ''Cobelodus'' (A) and Cladodoides (B), showing different angular relationships of the plane containing the external semicircular canal (heavy line) to the endocast long axis (thinner line). Not to scale.
Fig. 43 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 43. ''Cobelodus'' CT scan, three-slice mode (digital reslicing of original transverse CT scan slices), showing orthographic views of the glossopharyngeal canal and surrounding cartilage. A, transverse slice; B, sagittal slice; C, horizontal slice. White lines correspond to x-y-z axes. Compare horizontal slice with figs. 37 and 38.
Fig. 30 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 30. FMNH PF 13242 (''Cobelodus''). Endocast of otico-occipital and labyrinth regions, oblique orthographic views. A, postero-dorsolateral view; B, anterolateral view.
Fig. 28 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 28. FMNH PF 13242 (''Cobelodus''). Cranial endocast, anterior views. A, entire endocast; B, endocast with anterior half removed.
Fig. 24 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 24. FMNH PF 13242 (''Cobelodus''). Contour-based surface reconstruction of cranial endocast generated from CT-scan slices. Right side, with semicircular canals and ampullae.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
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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.