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Hammerhead fins are highly valued and they are being increasingly targeted in some areas in response to increasing demand for shark fins. Hammerhead shark species S. zygaena and S. lewini were found to Scalloped hammerhead, white, and thresher sharks are each estimated to have declined by over 75% in the past 15 years. While in 2017, Incopesca recorded the landing of 7,556 hammerhead shark bodies between both species, for 2019, only 448 bodies were landed in total. These methods are outdated and ineffective – in 2006 a fatal shark bite occurred on a drumlined beach in Amity Point, QLD (7). A 2016 decree led Incopesca to categorize them as a “commercial species”. Two distinct Costa Rica’s Pacific hammerhead shark populations could be in a delicate situation, according to recent data from the Costa Rican Institute of Fisheries and Aquaculture (Incopesca). Christine C. Bruels . The population of whale sharks, one of the endangered migratory species, has declined by 63 per cent in last 75 years in the Indo-Pacific region, a nature conservation body has … Front. Great and scalloped hammerheads are already listed as threatened species in NSW and it is illegal to fish for them in NSW state waters (5). The great hammerhead sharks’ role as apex predator is essential to maintaining a healthy ecosystem in the waters off eastern Australia, according to new research. The Scalloped hammerhead shark (Sphyrna lewini) is listed as globally endangered on the IUCN’s Red List. ‘Conservation Dependent’ is an odd category created specifically for fish. Two species in particular have a greater record of landing in Costa Rican ports: the common hammerhead shark (Sphyrna lewini) and the smooth hammerhead shark (Sphyrna zygaena). Scalloped Hammerhead shark (Sphyrna lewini) is an endangered species which its populations have been declining globally including in Indonesia, the world's top shark fishing country. Hammerhead sharks are particularly vulnerable to being caught in gillnets (fishing nets) because of the unique shape of their head. population declines seen in hammerhead sharks are caus-ally related. Due to shy nature and migratory habits of the great hammerheads the conservation efforts are quite ineffective and the population … The information reflects only the sharks that are caught and landed in ports, but this is not necessarily the total catch. Many, but not necessarily mutually exclusive, functions have been postulated for the cephalofoil, including sensory reception, manoeuvering, and prey manipulation… What are some of the most amazing facts about Hammerhead sharks?! The unique ‘hammer’ shaped head helps the shark zone in on prey by detecting the direction of a scent, and enabling it to see prey both above and below at the same time. With this information, biologists could analyze whether fewer sharks have been caught over the years. Globally populations are facing decline due to the high economic value of its fins and the consumption of its meat. Australian hammerhead shark populations are in decline. This would be a “serious” practice, as reported by the Scientific Advisory Committee of Incopesca. We study the population dynamics of sharks through quantitative demographic methods and assess the status of shark stocks through a variety of stock assessment methodologies. We’re Creating a Conscious alternative news network that we feel the world needs and we need your help! This, however, does not always happen. The information suggests possible overfishing of these animals, said Fins Attached biologist Randall Arauz. Great Hammerhead Shark. The study, conducted by researchers from Macquarie University and published in the Journal of Fish Biology , found that large sharks over three meters helped maintain marine food webs by preying on lesser predators like … Since 1986, Dr. Baum’s analysis of logbook data suggests a population decline of 89% in hammerhead sharks, 79% in great white sharks, 65% in tiger sharks, 80% in thresher sharks, 60% in blue sharks, and 70% in mako sharks. Since 1937 in NSW and 1962 in QLD, lethal shark control programs have been carried out each year using either nets or drumlines. The Institution requested “the improvement of fishing inspections, in such a way that the commercialization of these sharks is not allowed, if they do not meet the size of first sexual maturity”, according to the Non-Harmful Extraction Opinion 2020-2021. Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. Until a week ago the export of hammerhead sharks was allowed in Costa Rica, following a decree of the Solís Rivera administration in 2016. Three hammerhead species have a high risk of extinction: the great hammerhead, which is threatened by the shark fin trade and bycatch (unwanted fish captured as a … The globally critically endangered or vulnerable conservation status of the species. Hammerhead sharks reproduce slowly – it can take 15-17 years to reach sexual maturity. There may be captured sharks that are discarded before reaching the port, explained the expert. Status of the Hammerhead Shark. Scalloped hammerhead sharks are listed under the EPBC Act, the piece of Australian law that governs how we protect endangered wildlife from threats. Bruno L. S. Ferrette . How are people getting away with fishing hammerhead sharks? The data also shows that 86% of the landed sharks had not reached sexual maturity. It is found in tropical and warm temperate waters worldwide, inhabiting coastal areas and the continental shelf. “It is within this Commission where a group of specialists issues recommendations for the management of pelagic or highly migratory species, which are binding,” says the document. The Great Hammerhead Shark (Sphyrna mokarran) has been listed as a Vulnerable Species, and the Scalloped Hammerhead Shark (Sphyrna lewini) has been listed as an Endangered Species in NSW under the Fisheries Management Act 1994. Support news and media that matters and that can help change our world! This, according to biologists, could be a sign of overfishing. In 2016, international protection of vulnerable smooth hammerhead sharks (Sphyrna zygaena) resulted in a seasonal fishing ban to protect juvenile sharks in Peru's small-scale fisheries.Richer data on the fisheries' social-ecological dynamics are necessary to understand … The lifespan of hammerhead sharks is estimated to be 25 to 35 years. Incopesca data provides a clue: the population could be at risk. They are threatened by commercial fishing, mainly for the shark fin trade. The information shows that, between 2017 and 2019, the number of hammerhead sharks landed in national ports plummeted by 94%. There is concern that the numbers of hammerhead sharks killed in fishing is under-reported in fishing records, so we do not know how severe the issue really is – it could be worse than we imagine. Closed-area models highlight priority areas for shark conservation, and the need to consider effort reallocation and site selection if marine reserves are to benefit multiple threatened species. The Institution assured that this information is granted exclusively to the Inter-American Tropical Tuna Commission (CIAT). Introduction . Smooth Hammerhead Shark (Sphyrna zygaena) What species of hammerhead sharks are listed as threatened in NSW? Scalloped Hammerhead Shark (Sphyrna lewini) – Population have declined by roughly 95% January 27, 2018 Most Endangered 3,533 Views Scalloped hammerheads sharks are among the most threatened highly migratory sharks. Moreover, using hammerhead sharks as a case study, we seek to illustrate how aspects of specialization may increase the vulnerability of a marine predator to human exploitation, resulting in a de facto evolutionary trap that Hammerhead sharks have never been involved in a fatal incident. Rodrigo R. Domingues . Hammerhead sharks can grow up to a length of 20 feet and weigh around 1,000 pounds. Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population… Australia is a signatory to the convention. It is overfished during all stages of its lifecycle. Are Hammerhead Sharks Endangered? The capture of the domestic market is allowed with certain restrictions for the longline sector. The latest research suggests that around 100 million sharks may be killed annually, often targeted for their fins. Any trade of CITES listed species must conform to a Non-Detriment Finding (NDF) which contains management guidelines to ensure the species survival is not threatened by trade. “Costa Rica must immediately prohibit the capture and retention of the hammerhead shark, as well as the domestic possession and commercialization of its parts if the country sincerely wants to save this emblematic species from its imminent extinction,” said Arauz. Don\\\'t forget to follow @theCRNews on instagram! Commercial fishing is the biggest threat to hammerheads, with 370t of hammerhead sharks legally allowed to be caught every year in Australian waters (1). Great Hammerhead Shark Sphyrna mokarran . For NSW, see. In 2017, the Puntarenas Criminal Court sentenced a businesswoman with the surname, Tseng Chang, to six months in prison for the crime of fluttering. Scalloped hammerheads are estimated to have lost up to ~80% of their original population in QLD waters (2). Sharks should never be eaten due to their struggling population... although yes, Hammerhead Sharks are technically OK to eat. http://www.iucnredlist.org/details/39385/0, http://www.iucnredlist.org/details/39386/0, https://www.dpi.nsw.gov.au/fishing/sharks/management/shark-meshing-bather-protection-program, https://data.qld.gov.au/dataset/shark-control-program-shark-catch-statistics, https://taronga.org.au/conservation-and-science/australian-shark-attack-file, Scalloped Hammerhead – Critically Endangered (IUCN); Conservation Dependent (EPBC Act 1999), Smooth Hammerhead – Vulnerable (IUCN); not listed (EPBC Act 1999). Many shark species, including whale sharks download Print PDF ( Print Ready with Crop Marks ), fish by... Whale sharks Commission ( CIAT ) so we decided to focus on news ’. And sea was and always will be Aboriginal land and sea was and always will be Aboriginal land sea! 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