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| Oceanic whitetip shark | |
|---|---|
| Name | Oceanic whitetip shark |
| Status | CR |
| Status system | IUCN3.1 |
| Genus | Carcharhinus |
| Species | longimanus |
| Authority | (Poey, 1861) |
Oceanic whitetip shark is a pelagic shark species once common across tropical and subtropical marine waters, notable for its rounded fins with conspicuous white tips and historically important roles in open-ocean food webs. Conservation organizations and researchers have raised alarms over dramatic population declines due to targeted and incidental fisheries pressures, with international treaties and regional management bodies debating measures to mitigate threats. Scientific institutions, museums, and universities continue to study its biology via satellite tagging, genetic analyses, and long-term monitoring programs.
The species was described by Felipe Poey in 1861 and assigned to the genus Carcharhinus, which also includes species studied by major natural history collections such as the Natural History Museum, London and the Smithsonian Institution. Taxonomic treatments reference comparative morphology from classic works by researchers at the British Museum and the Muséum national d'Histoire naturelle. Molecular phylogenetics conducted by teams at institutions like the Scripps Institution of Oceanography and the Monterey Bay Aquarium Research Institute have explored relationships among pelagic carcharhinids alongside analyses involving specimens held at the American Museum of Natural History and the Australian Museum.
Adults are characterized by broad, rounded pectoral fins with white tips and a stocky body, traits documented in field guides used by the Monterey Bay Aquarium and the Australian Institute of Marine Science. Morphological keys developed at the Smithsonian Institution and the Natural History Museum, London help distinguish it from similar species such as those treated in atlases by the FAO and monographs prepared at the University of Miami. Identification in the field often follows protocols endorsed by the IUCN Shark Specialist Group and regional marine laboratories including the Woods Hole Oceanographic Institution.
Historically widespread across the tropical and subtropical sectors of the Atlantic Ocean, Pacific Ocean, and Indian Ocean, occurrences have been recorded by research cruises organized by the National Oceanic and Atmospheric Administration and exploratory expeditions supported by the Royal Society. Habitat use has been inferred from satellite tagging projects undertaken by teams at the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution, revealing pelagic habits similar to patterns reported by the International Union for Conservation of Nature and fisheries observers aboard vessels licensed by national authorities such as the Bureau of Fisheries and Aquatic Resources.
Open-ocean behavior has been documented in studies led by researchers at the University of Miami and the Monterey Bay Aquarium Research Institute, including interactions with large marine vertebrates noted in publications from the Smithsonian Institution and observational reports by crews from the Royal Navy and commercial shipping registries. Social and foraging interactions have been the subject of collaborative research involving the National Geographic Society and academic teams at the University of British Columbia, with movement ecology investigated using tags developed at the Woods Hole Oceanographic Institution.
Dietary analyses, some conducted by scientists at the Scripps Institution of Oceanography and the University of Miami, show a broad prey spectrum including teleosts documented in collections at the American Museum of Natural History and cephalopods cataloged by the Muséum national d'Histoire naturelle. Feeding behavior around large marine mammal carcasses and floating objects has been described in expedition reports organized by the National Geographic Society and research aboard vessels affiliated with the Woods Hole Oceanographic Institution.
Reproductive biology—viviparous placental reproduction—has been characterized by researchers publishing via institutions such as the Smithsonian Institution and the Scripps Institution of Oceanography, with life-history parameters used in stock assessments by agencies including the Food and Agriculture Organization and the National Oceanic and Atmospheric Administration. Age and growth studies conducted by university laboratories at the University of British Columbia and the Australian Institute of Marine Science contribute to demographic models applied by the IUCN and regional fisheries management organizations.
Interactions with humans peaked during intense pelagic longline and shark-finning operations regulated historically by treaties and flag-state controls overseen by bodies like the United Nations and the Regional Fisheries Management Organization network. Conservation listings and trade controls considered by the Convention on International Trade in Endangered Species of Wild Fauna and Flora and the IUCN reflect reduced abundance, prompting research collaborations with NGOs such as the World Wildlife Fund and the Pew Charitable Trusts. Fisheries observers coordinated through the National Oceanic and Atmospheric Administration and data from the Food and Agriculture Organization inform management proposals debated at meetings of the International Commission for the Conservation of Atlantic Tunas and regional fisheries bodies.
Category:Sharks Category:Pelagic fish