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25 results for “Shark fisheries”
Figure 1. – A in Potentially unsustainable fisheries of a critically-endangered pelagic shark species: the case of the blue shark (Prionace glauca) in the Western Mediterranean Sea
Figure 1. – A: Artisanal pelagic longliner from Torredembarra (Catalonia), Sep. 2012. B: Industrial pelagic longliner from Carboneras (Andalusia), Nov. 2014.
Global hotspots of shark interactions with industrial longline fisheries
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Local ecological knowledge of fisheries charts decline of sharks in data-poor regions
<p>Scientific knowledge is lacking on marine species of economic and conservation importance, hindering their sustainable management. Local Ecological Knowledge (LEK) has the potential to provide valuable insights on large (spatial and temporal) scales, by drawing on the collective experiences of those who work closely with the taxa of interest. This study explored the status of shark population over time in four countries across eastern and southern Arabia (i.e. Kuwait, Bahrain, Oman and Yemen). Results indicate strong declines, with highly experienced fishermen reporting greater perceived declines (80%) in the abundance of sharks (in general), with mean year of perceived decline starting in the late 1990s to early 2000s. For three specific taxa investigated, hammerhead sharks (e.g. Sphyrna mokarran) had the greatest mean perceived decline (80%), while even the group with the least decline (small carcharhinids) had mean perceived declines of 50%. Management measures are urgently required in the region to ensure sustainability of historic shark fisheries that provide food security and coastal livelihoods (e.g. Yemen and Oman), and to prevent regional extinctions (e.g. hammerhead sharks). Older and more experienced fishermen who are both; witness to the greatest declines and may have local standing and influence could be valuable resources in developing more community-based sustainable fisheries, especially given the apparent lack of success of formal management measures.</p>
FIGURE 16 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 16. Ventral view of snout of the holotype of Springeria nanhaiensis SCSFRI S 04915 (subadult male 295 mm TL).
FIGURE 15 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 15. Dorsal view of the holotype of Springeria nanhaiensis SCSFRI S 04915 (subadult male 295 mm TL).
FIGURE 13 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 13. Ventral head view of the holotype of Bythaelurus immaculatus SCSFRI O 0094 (adult male ~708 mm TL).
FIGURE 18 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 18. Ventral view of snout of the holotype of Springeria stenosoma SCSFRI O 0065 (female 520 mm TL).
FIGURE 12 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 12. Lateral view of the holotype of Bythaelurus immaculatus SCSFRI O 0094 (adult male ~708 mm TL).
FIGURE 10 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 10. Lateral view of: A. holotype of Isistius labialis SCSFRI S 07257 (female 442 mm TL); B. Isistius brasiliensis (CSIRO H 5150–01, female 480 mm TL) from off Australia.
FIGURE 8 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 8. Lateral view of: A. holotype of Scymnodon niger SCSFRI S 07561 (female 482 mm TL); B. Zameus squamulosus (CSIRO H 2560–03, adult male ~500 mm TL) from Australia.
FIGURE 11 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 11. Holotype of Isistius labialis SCSFRI S 07257 (female 442 mm TL): A. anterior ventral view; B. dentition.
FIGURE 7 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 7. Lateral view of Centroscymnus coelolepis (CSIRO H 493, adult male 925 mm TL) from off southeastern Australia.
FIGURE 6 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 6. Lateral trunk denticles of the holotype of Centroscymnus macrops SCSFRI O 0150 (female 792 mm TL).
FIGURE 1 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 1. Holotype of Squalus acutirostris SCSFRI D 01562 (adult male 648 mm TL): A. lateral view; B. ventral head view; C. first dorsal fin; D. second dorsal fin.
FIGURE 3 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 3. Holotype of Centrophorus ferrugineus SCSFRI O 0094 (adult male 1044 mm TL): A. anterior lateral view; B. ventral head view; C. first dorsal fin; D. second dorsal fin.
FIGURE 5 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 5. Holotype of Centroscymnus macrops SCSFRI O 0150 (female 792 mm TL): A. lateral view; B. ventral view of head; C. dentition.
FIGURE 4 in Notes on shark and ray types at the South China Sea Fisheries Research Institute (SCSFRI) in Guangzhou, China
FIGURE 4. Lateral trunk denticles of the holotype of Centrophorus ferrugineus SCSFRI O 0094 (adult male 1044 mm TL).
Local ecological knowledge of fisheries charts decline of sharks in data-poor regions
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Efficacy of a novel galvanic shark deterrent to reduce catch of elasmobranchs in longline fisheries
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Data from: Can multi-species shark longline fisheries be managed sustainably using size limits? Theoretically, yes. Realistically, No.
<p>This is the raw data used in :</p> <p>Smart J, White W, Baje L<span>,</span> Chin A, D'Alberto B, Grant M, Mukherji S and Simpfendorfer C (2020) Can multi-species shark longline fisheries be managed sustainably using size limits? Theoretically, yes. Realistically, No. Journal of Applied Ecology</p> <p>Included are two R scripts which create data inputs and then perform the articles analsysis.</p>
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