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| Prionace glauca | |
|---|---|
| Name | Blue shark |
| Status | VU |
| Status system | IUCN3.1 |
| Genus | Prionace |
| Species | glauca |
| Authority | (Linnaeus, 1758) |
Prionace glauca is a pelagic lamnid shark known for its slender body and indigo coloration, widely recognized across temperate and tropical oceans. It is often encountered in pelagic fisheries, marine research, and conservation discussions involving bycatch, migratory corridors, and fisheries management. Scientists, policymakers, and conservationists reference international agreements and regional management bodies when addressing its status.
Prionace glauca was described under the Linnaean system in 1758 and placed within Carcharhiniformes in classical taxonomic treatments; its nomenclatural history appears in catalogues maintained by natural history museums and taxonomic registries associated with institutions such as the British Museum, Smithsonian Institution, and Muséum national d'Histoire naturelle. Subsequent systematic revisions by ichthyologists at universities and research institutes (including the University of Tokyo, Scripps Institution of Oceanography, and Woods Hole Oceanographic Institution) used morphological characters and molecular markers developed in laboratories allied with the Natural History Museum, American Museum of Natural History, and Zoological Society of London. Genetic analyses referenced in publications from the Max Planck Institute, CNRS, and Smithsonian Tropical Research Institute compared mitogenomes and nuclear loci across genera, informing discussions at IUCN Species Survival Commission meetings and FAO technical consultations. Nomenclatural synonyms and historical names appear in taxonomic catalogs curated by the International Commission on Zoological Nomenclature and regional checklists from Fisheries and Oceans Canada, NOAA Fisheries, and the Australian Museum.
Adult morphology is characterized by a fusiform body, long pectoral fins, and a triangular snout recorded in field guides used by the Marine Biological Association, National Oceanography Centre, and Monterey Bay Aquarium; identification keys produced by the FAO, NOAA, and Smithsonian guides distinguish this species from congeners and similar sharks in atlases produced by the World Wildlife Fund and IUCN. Diagnostic traits—body proportions, dermal denticles, and tooth morphology—are detailed in monographs from the Linnean Society, Royal Society publications, and journals such as Nature, Science, and Proceedings of the Royal Society B. Museum collections at the Natural History Museum, American Museum of Natural History, and Australian National Fish Collection preserve voucher specimens referenced in taxonomic checklists compiled by the Royal Ontario Museum and Museum Victoria. Comparative anatomy studies from Harvard University, Oxford University, and Cambridge University laboratories employed scanning electron microscopy protocols described in methodological papers from the Royal Society of Chemistry.
This species occupies epipelagic and mesopelagic zones across the North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian Ocean basins, geo-referenced in global datasets managed by the Global Biodiversity Information Facility, Ocean Biogeographic Information System, and GBIF partner institutions including the Smithsonian Institution and National Museum of Natural History. Regional occurrence records appear in atlases produced by Fisheries and Oceans Canada, ICES working groups, CSIRO reports, and Japan Fisheries Research and Education Agency assessments. Studies from Dalhousie University, University of Cape Town, and University of São Paulo document seasonal migrations associated with oceanographic features monitored by NASA, NOAA, and the European Space Agency and referenced in satellite telemetry projects led by the Marine Megafauna Foundation and Pew Charitable Trusts.
Movement ecology and migratory behavior are elucidated through tagging studies coordinated by institutions such as Tagging of Pacific Predators, the National Institute of Water and Atmospheric Research, and the Census of Marine Life, with results published via collaborations involving UN Environment Programme, IUCN, and Conservation International. Social and schooling behavior has been observed at sites studied by the Monterey Bay Aquarium Research Institute, University of Miami, and University of Exeter; those observations feed into ecosystem models developed by the FAO, ICES, and regional fisheries management organizations. Predator–prey dynamics and interactions with marine mammals and seabirds are discussed in ecological syntheses authored by researchers affiliated with the Scripps Institution of Oceanography, Duke University, and the University of California, Santa Barbara.
Dietary studies using stomach content analysis and stable isotope methods from laboratories at the University of British Columbia, University of Tasmania, and University of Auckland show a diet comprising teleost fishes, cephalopods, and pelagic crustaceans often documented in journals such as Marine Ecology Progress Series, Journal of Fish Biology, and ICES Journal of Marine Science. Prey taxa listed in regional guides (including works from NOAA, FAO, and CSIRO) and museum specimen records from the Natural History Museum and Australian Museum illustrate trophic links to commercially important species monitored by the International Seafood Sustainability Foundation and regional fisheries bodies.
Reproductive biology, including viviparity and litter size, has been reported in studies led by researchers at the University of California, San Diego, Plymouth Marine Laboratory, and University of Lisbon and summarized in conservation assessments by IUCN and FAO. Age and growth estimates derived from vertebral band counts and tagging projects are included in stock assessments by ICCAT, IOTC, and WCPFC; life-history parameters inform management advice produced by UNEP, regional fisheries management organizations, and national agencies such as NOAA Fisheries and Fisheries and Oceans Canada.
Global assessments by the IUCN list the species with a conservation status discussed in policy fora including CITES proposals, CMS negotiations, and regional fisheries management organizations. Major threats—commercial longline, gillnet, and purse-seine bycatch—are documented in reports by the FAO, Pew Charitable Trusts, Marine Stewardship Council assessments, and investigative studies published via Greenpeace and Oceana collaborations. Conservation measures and mitigation strategies have been trialed by the Shark Trust, Wildlife Conservation Society, and local NGOs, and are debated in management meetings hosted by ICCAT, IOTC, NEAFC, and WCPFC; research funding and policy actions involve partnerships with institutions like the European Commission, US National Science Foundation, and Wellcome Trust.
Category:Sharks