smooth hammerhead iucn

Sherley, R. B. et al. Originally known as Zygaena lewini, its genus name was later changed to its current name. 2006b). Sphyrna zygaena is a large-bodied and highly mobile hammerhead shark with active and strong swimming capacities. To save searches and access a historical view of information you have downloaded you are required to register for an account. The widely spaced eyes, nostrils, and other senses allow the scalloped hammerhead to more successfully locate its prey near, or buried in, the sea floor. In the summer, these sharks migrate towards the poles followin… They are carnivores. Measuring Recovery with the IUCN Green Status of Species. collect. Unlike other hammerheads, this species prefers temperate waters and occurs worldwide at medium latitudes. The smooth hammerhead shark is one of the larger hammerhead species, reaching average lengths of 8 to 11.5 feet (2.5 to 3.5 m) and a maximum length 16.4 feet (5 m) and weight of 880 pounds (400 kg). (2015), this is the most oceanic of all hammerhead sharks, as well as the most temperature tolerant species. smooth hammerhead sharks can be found from the British Isles to Guinea, including the Cape Verde Islands, and have also been observed in the Côte d'Ivoire and equatorial ... IUCN 2005) The smooth hammerhead shark is a coastal-pelagic and semi-oceanic species and . Sphyrna zygaena (Smooth Hammerhead) is a species of modern sharks in the family hammerhead sharks. The International Union for Conservation of Nature (IUCN) announced its Red List’s final update of 2019 on December 10th. It’s found in most of the… read more. It is most common in waters of 16–22°C, but has also been reported in cooler waters of 13–19°C off South Africa (Diemer et al., 2011). The Greek word sphyrna translates into "hammer" in English, referring to the shape of this shark's head. (+49 228) 815 2449, Contact, This site is maintained by the CMS Secretariat © 2020, CMS Secretariat, Platz der Vereinten Nationen 1, 53113 Bonn, Germany. Like many large-bodied shark species, S. zygaena is among the top predators in the marine food web (Cortés, 1999). Reducing bycatch mortality for hammerhead sharks is hampered by the high mortality rates for these sharks after being caught in fishing gears. Sphyrna zygaena is a large-bodied and highly mobile hammerhead shark with active and strong swimming capacities. Learn more, In Memoriam : Bradnee Chambers (1966-2019), Vacancies in the CMS FamilyVacancies in Other OrganizationsInformation about job openings, This site is maintained by the CMS Secretariat © 2020  | DisclaimerCMS Secretariat, Platz der Vereinten Nationen 1, 53113 Bonn, GermanyTel. The smooth hammerhead is a large species of hammerhead shark, the second largest after the great hammerhead (Sphyrna mokarran). However, the effects of these changes and their ultimate impact on populations of S. zygaena are currently unknown. ... IUCN … Sphyrna zygaena (L.) (Smooth Hammerhead) is a coastal-pelagic and semi-oceanic hammerhead shark that is distributed worldwide throughout temperate and tropical waters (Ebert et al. (+49 228) 815 2401, Fax. It is found in temperate and tropical waters, and according to Clarke et al. By contrast, the IUCN, an international body that assesses the conservation status of wildlife, assessed great and scalloped hammerheads as critically endangered and smooth hammerheads as vulnerable (3, 4). The longevity is uncertain but the species has been aged to at least 18 years for males and 21 years for females (Coelho et al., 2011). Reproduction is iteroparous, viviparous, and dioecious. 13562).Prefers to feed on small sharks, skates and stingrays, but also preys … In Australia, it is found from the Coral Sea (Queensland) south through New South Wales, Victoria, South Australia, Tasmania and Western Australia, as far north as the Monte Bello Islands (Last and Stevens 2009). (2012) found an at vessel mortality of 71% in longline fisheries, and post-release mortality would increase this number further. . The smooth hammerhead is a species of hammerhead shark, and part of the family Sphyrnidae. The largest specimen ever found was 5 meters long. A relatively low rating for sharks, and especially for hammerheads. (+49 228) 815 2401, Fax. The smooth hammerhead (Sphyrna zygaena) is listed by the IUCN on its Red List of Threatened Species as Vulnerable as its population worldwide may drastically decline unless efforts are put in place to secure its survival. Sphyrna mokarran. The smooth hammerhead (Sphyrna zygaena) is listed by the IUCN on its Red List of Threatened Species as Vulnerable as its population worldwide may drastically decline unless efforts are put in place to secure its survival. © International Union for Conservation of Nature and Natural Resources. Smooth hammerhead sharks have a smooth (no notches) head that is slight, and broadly arched. Please enter your e-mail address and password below. The largest specimen ever found was 5 meters long. Populations of the Great Hammerhead Shark have decreased by 50% because of fishing. Bonnethead (Sphyrna tiburo) Bonnethead resting in the sand (Photo: IrinaK/Shutterstock) … Memorandum of Understanding on the Conservation of Migratory Sharks. The smooth hammerhead (Sphyrna zygaena) is listed by the IUCN on its Red List of Threatened Species as Vulnerable as its population worldwide may drastically decline unless efforts are put in place to secure its survival.Sphyrna zygaena is a large-bodied and highly mobile hammerhead shark with active and strong swimming capacities. The species feeds on a large variety of teleosts (i.e. Occurs inshore and well offshore (Ref. Great and smooth hammerheads have no protection under the EPBC Act and are not listed to date. This species is commonly known as the Great hammerhead listed as Critically Endangered (CR) on the IUCN Red List. The scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark, and part of the family Sphyrnidae. Introduction. Based on similarities in the appearance of their fins, dusky, sandbar, and great and smooth hammerhead sharks are proposed for inclusion along with the scalloped hammerhead. They are listed as vulnerable by IUCN and in cites appendix ii. Photo by Nik Wilets. In an analysis of the trade through the Hong Kong fin market, Clarke et al. The smooth hammerhead is listed as Vulnerable on the IUCN Red List with a decreasing population trend, while the scalloped hammerhead is listed as Endangered. In the western Indian Ocean, the smooth hammerhead occurs off the coasts of South Africa, India, and Sri Lanka. 1 Smooth hammerhead sharks mate via … Smooth Hammerhead Sphyrna zygaena (Linnaeus 1758). The smooth hammerhead is a large species of hammerhead shark, the second largest after the great hammerhead (Sphyrna mokarran). This species is named "smooth hammerhead" because of the distinctive shape of the head, which is flattened and laterally extended into a hammer shape, without an indentation in the middle of the front margin. The distribution within the Pacific Ocean includes from Vietnam to Japan a… Habitat degradation and pollution affect coastal ecosystems that juvenile S. zygaena sharks occupy during early life stages. The Great Hammerhead Shark has been listed as endangered by the International Union for the Conservation of Nature (IUCN), because of fishing for its fins, which are made into shark fin soup, for its skin which is made into leather, and their liver oil for vitamins. Like all hammerhead sharks, the scalloped hammerhead is an active predator and gains several advantages from the shape of its head. 244).Coastal, pelagic, and semi-oceanic, but often bottom associated at 1-139 m (Ref. They are found in marine habitat. This species is found worldwide in temperate waters. This would account for an estimate of 49 000 and 90 000 tons of smooth hammerhead shark taken each year which would amount to between 1.3 and 2.7 million individual animals (Clarke et al. This website was made possible through generous support from: You must log in to access advanced IUCN Red List functionality. Santos & Coelho (2018) recorded the longest migration ever documented for this species (> 6600 km) across hemispheres. (2006a) estimated that 4–5% of all fins traded were from S. zygaena or S. lewini each year. overview; data; media; articles; maps; names A study by Coelho et al. bony fish), elasmobranchs, crustaceans and cephalopod species (Smale and Cliff, 1998; Cortés, 1999). There is little such information for the smooth hammerhead shark, Sphyrna zygaena. Great Hammerhead (Sphyrna mokarran) The great hammerhead is the largest species in the family (Photo: WayneWorks Marine/Aggressor Fleet) True to its name, the great hammerhead is the largest of the hammerhead sharks. This species is reported to be migratory although no group migration has been recorded (Miller, 2016). In the western Atlantic Ocean, this species is found from Canada south to the Virgin Islands and from Brazil south to Argentina, while in the eastern Atlantic it occurs from the British Isles south to Côte d’Ivoire, including the Mediterranean Sea. Facts and Information about the Coronavirus Disease (COVID-19) and Wildlife. REGIONALLY CRITICALLY ENDANGERED The Smooth Hammerhead is caught globally as target and bycatch in coastal and pelagic commercial and small-scale longline, purse seine, and gillnet fisheries, and is often retained for the fins, and sometimes the meat. Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global … The maximum reported size of the species is 4.20m but usually ranges between 2.5m to 3m. However, these assessments were done in 2005 and 2007 respectively, which could mean that these species could have a more dire classification after re-evaluation. oceanic whitetip and scalloped hammerhead sharks are proposed for inclusion in CITES Appendix II. They grow to a maximum length of around six metres and are found in coastal areas and offshore in both temperate and tropical waters. 2013).In the western North Atlantic Ocean, the hypothesized range is from Nova Scotia, Canada, to Florida and partly into the Caribbean Sea (Castro 2011, Compagno 1984). Individuals can grow to 500 cm. Version 2020-3. Fast Facts: IUCN Report on Conservation Status of Open Ocean Sharks & Rays Species Snapshots Hammerhead sharks Sphyrna spp IUCN Red List status: • Scalloped hammerhead Sphyrna lewini: Endangered Globally • Great hammerhead S. mokarran: Endangered Globally • Smooth hammerhead S. zygaena: Vulnerable Globally Fast Facts: All the oceanic shark and ray species, except for the Smooth Hammerhead, saw their populations decline over the past half century.. ... (IUCN… The Smooth Hammerhead occurs across the Atlantic, Indian and Pacific Oceans in temperate and tropical waters (Compagno 1984). 8. There is also evidence of north-south movements, which may be seasonal migrations.

Dewalt Black Friday 2020, 775 Motor Shaft Connector, Morgan Funeral Home, Hair And Beauty Warehouse, Gigi Perreau Pronunciation, Hungry Man Xxl Discontinued,