Humpback dolphins are limited in their range from the West coast of Africa in the West to the coast of China and the east coast of Australia in the East and are always found in shallow nearshore waters. The future of Atlantic Humpbacked Dolphins Sousa teuszii in Dakhla Bay, Atlantic Sahara, Go-South Bull. As recently as 1988, humpback whales were listed as endangered by IUCN. Near Threatened. Accessibility Humpback whales are one of the most-watched and well-studied species of whale. Re-assessment of the Conservation Status of the Indo-Pacific Humpback Dolphin (Sousa chinensis) Using the IUCN Red List Criteria. . 2004), and formally described as a subspecies of the Indo-Pacific humpback dolphin . 2008). Re-Assessment of the Conservation Status of the Indo-Pacific Humpback Dolphin ( Sousa chinensis) Using the IUCN Red List Criteria. Braulik GT, Findlay K, Cerchio S, Baldwin R. Adv Mar Biol. Parra, G. J. What's life like for an Indian Ocean humpback dolphin? Fishing, dredging, land reclamation, construction blasting, port and harbour construction, pollution, boat traffic and other coastal development activities all occur, or are concentrated within, humpback dolphin habitat and threaten their survival. The range of the Atlantic humpback dolphin is estimated to stretch more than 7,000 kilometers along the coastal areas of Western Sahara to central Angola. Fishpond United States, Humpback Dolphins (Sousa spp. Although data are far from sufficient to make a rigorous quantitative assessment of population trends for this species, the scale of threats is large enough over a significant enough portion of the range to suspect or infer a decline of at least 50% over three generations, which qualifies it for listing on the IUCN Red List as Endangered. Presently there are less than 500 of these dolphins remaining in South African waters. A summation of available estimated or presumed population sizes indicated that the total global population likely . Indo-Pacific humpback dolphins are native to: Bangladesh; Brunei Darrusalam; Cambodia; India; Indonesia; Malaysia; Myanmar( Burma); People’s Republic of China; Philippines; Singapore; Taiwan (Republic of China); Thailand; Vietnam, Australian humpback dolphins are native to: Australia and Papua New Guinea. Re-assessment of the Conservation Status of the Atlantic Humpback Dolphin, Sousa teuszii (), Using the IUCN Red List Criteria. Not all humpback dolphins have a noticeable hump on their back, but many do. Recent genetic studies indicate Australian humpback dolphins live in small and relatively isolated populations with limited gene flow among them. Asian Marine Biology 14, the most recent volume, is a memorial volume for the late James Stephen Leatherwood, with Guest Editors Brian D. Smith and William F. Perriu. This volume presents the most recent biological and behavioral discoveries of bottlenose dolphins from different regions and compares bottlenose dolphins as a group with other species of animals. Humpback Dolphins: A Brief Introduction to the Genus Sousa. 8600 Rockville Pike Australian humpback dolphins (Sousa sahulensis) were recently described as a new species endemic to northern Australia and potentially southern New Guinea. Australian humpback dolphins (Sousa sahulensis) were recently described as a new species endemic to northern Australia and potentially southern New Guinea. Adv Mar Biol. Although once thought to be widespread throughout their range and present in large groupings, their numbers have declined significantly over the years and only small, localised populations are thought to remain. (15): 166-171 Ongoing research efforts and recently developed research strategies and priorities will provide valuable information towards the future conservation and management of Australian humpback dolphins. Humpback dolphins use a variety of feeding techniques, including partially stranding themselves on shore while chasing fish7. This site needs JavaScript to work properly. IUCN conservation status: . Humpback Dolphins in Hong Kong and the Pearl River Delta: Status, Threats, and Conservation Challenges. The Indo-Pacific humpback dolphin (Sousa chinensis) was formerly included within the same species, but a 2014 study revealed them to be a separate species. Habitat degradation and loss is ongoing and expected to increase across the species range in Australia, and a continuing decline in the number of mature individuals is anticipated. The killer whale or orca (Orcinus orca) is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. & Cagnazzi, D. Chapter Seven - Conservation Status of the Australian Humpback Dolphin (. Jefferson, T. A. Found inside – Page 829Current eligibility against IUCN Red List Criteria IUCN Red List assessment data IUCN Criterion Criteria ... with all Humpback Dolphins in the Indo-Pacific region included in S. chinensis, known as the Indo-Pacific Humpback Dolphin ... Found inside – Page xxviRe-assessment of the Conservation Status of the Atlantic Humpback Dolphin, Sousa teuszii (K€ukenthal, 1892) Using the IUCN Red List Criteria. pp. 47–78. Caroline R. Weir and Tim Collins. A Review of the Geographical Distribution and ... There are four recognized species of humpback dolphins with very little overlap between their ranges: the, Venues and dates of all previous meetings, Proposal for a Whale Sanctuary in the South Atlantic, Expert Advisory Panel on Entanglement Response, Best practice guidelines for entanglement responders. Because they tend to be relatively shy, and less active than the bottlenose dolphins with which they often share territory, this species is not often the primary target of dolphin watching tours. In addition to the eleven new complete assessments, available information on five 'visitor'1 species (Common Minke Whale, Humpback Whale, Killer Whale, False Killer Whale and Rough-toothed Dolphin; see In this book, the editors present a view of the socioecology of primates and cetaceans in a comparative perspective to elucidate the social evolution of highly intellectual mammals in terrestrial and aquatic environments. Their dependence on nearshore habitats brings them into contact with many types of human activities, putting them at risk from fisheries entanglement, boat traffic, pollution, and habitat loss. (2017). Collins, T. Re-assessment of the conservation status of the Atlantic humpback dolphin, Sousa teuszii (Kükenthal, 1892), using the IUCN Red List criteria. Humpback dolphins throughout Africa, Australia and Asia often live in close proximity to densely populated urban areas. A humpback dolphin has a streamlined body, a rounded melon, or forehead, and a long beak, as the projection containing the teeth is called. Researchers say that science alone will not bring them back from the brink of extinction but that a multi-stakeholder Conservation Management Plan is needed to . The Atlantic Humpback Dolphin (Sousa teuszii) lives around the Western coastline of Africa, but scientists now fear that it might just be one of the continent's rarest mammals; even more-so than certain types of gorillas and rhinos.Image Credit: Pixabay. It also has a flipper on each side of its body, a dorsal fin on its back, and a tail with two lobes, which are called flukes. Privacy, Help Indo-Pacific humpback dolphins inhabit shallow coastal waters within the tropics and subtropics of the Indian and Western Pacific Oceans. In . Committee on Taxonomy. PMC Humpback Dolphins (Sousa spp. Precarious. Found inside – Page 481T41711A10540463. https://doi.org/10.2305/IUCN. ... The IUCN Red List of Threatened Species 2012:e. ... Ould-Bilal AOS, Bamy IL (2004) Distribution, status, and biology of the Atlantic humpback dolphin, Sousa teuszii (Kükenthal, 1892). It feeds on a variety of fish, cephalopods and crustaceans. Identifying priority habitat for conservation and management of Australian humpback dolphins within a marine protected area. Zulkifli Poh, A. N., Peter, C., Ngeian, J., Tuen, A. Found inside – Page xixRe-assessment of the Conservation Status of the Atlantic Humpback Dolphin, Sousa teuszii (K ̈ukenthal, 1892) Using the IUCN Red List Criteria. pp. 47–78. Caroline R. Weir and Tim Collins. A Review of the Geographical Distribution and ... Bookshelf This site needs JavaScript to work properly. Found inside – Page 580Humpback dolphins are currently listed as Near-Threatened (S. chinensis) and Vulnerable (S. teuzsii) by the IUCN and are listed in CITES Appendix I the western Taiwan population of S. chinensis is listed as Critically Endangered. Humpback dolphins are found in relatively shallow nearshore waters throughout their range which includes most of the coastlines in Australia, Africa and Asia. Moores, R. (2018). 1 Indo-Pacific Humpbacked Dolphin (Sousa chinensis)...38 2 Irrawaddy (Snubfin) Dolphin (Orcaella . Found inside – Page 162... coastal-zone development, pollution, vessel traffic, and global warming IUCN status Has not been assessed Anatomy Indian humpback dolphins are the largest of all humpback dolphins reaching lengths of up to 91⁄4 ft (2.8 m). & Minton, G. Population Estimates of Indo-Pacific Humpback Dolphins (Sousa chinensis) in Kuching Bay, East Malaysia. Some feed exclusively on fish, while others hunt marine mammals . Braulik GT , Findlay K , Cerchio S , Baldwin R Adv Mar Biol , 72:119-141, 26 Sep 2015 This is an essential introduction, guide and reference work for those working to ensure a future for whales and dolphins. Not all humpback dolphins have a noticeable hump on their back, but many do. Epub 2015 Oct 21. Taiwanese humpback dolphins - IUCN - SSC Cetacean Specialist Group Although white dolphins had been observed by local fishers for some time, the Taiwanese white dolphin (Sousa chinensis taiwanensis) was not scientifically documented until 2002 (Wang et al. Advances in Marine Biology : Humpback Dolphins ( Sousa spp.) Precarious. The Atlantic humpback dolphin is now "critically . The species is found only along the western African coast, ranging Their conservation status was . Some individuals have been seen chasing prey in shallow waters and others have even been seen to engage in 'strand-feeding' - where they chase prey out of the water and onto mud-flats, deliberately stranding themselves in the process. Over the last two decades, scientists have become increasingly concerned about the conservation status of Atlantic humpback dolphins. As with many other species of whales and dolphins, individual humpback dolphins can be recognised from the unique patterns of scarring and pigmentation on their dorsal fins. Threshold of long-term survival of a coastal delphinid in anthropogenically degraded environment: Indo-Pacific humpback dolphins in Pearl River Delta. Privacy, Help What's life like for an Atlantic humpback dolphin? Accessibility In developing countries, their distribution often overlaps with areas where fishing effort is exponentially increasing7,20. Epub 2015 Sep 26. Bookshelf & Parsons, E. C. M. Feeding Habits of Indo-Pacific Humpback Dolphins (. Indian Ocean humpback dolphins (Sousa plumbea) are obligate shallow-water dolphins that occur exclusively in the near-shore waters of the Indian Ocean, from South Africa to the Bay of Bengal. Conservation Status. : Current Status and Conservation, Part 2. Conservation Status of the Indian Ocean Humpback Dolphin (Sousa plumbea) Using the IUCN Red List Criteria. This petition summarizes the natural history of the Taiwanese humpback dolphin, population trends and status, and threats to the species and its habitat. Epub 2015 Oct 21. 2015;72:119-41. doi: 10.1016/bs.amb.2015.08.004. While the International Union for the Conservation of Nature originally listed the Atlantic Humpback Dolphin on the Red List as a . Found in every ocean and many nearshore areas associated with coastal and marine tourism, they are the focus of whale watching operations in over many countries around the world. developed over a period of some 10 years by the IUCN (2001) require adequate estimates of population numbers, range size and distribution or . Found inside – Page 128“Chapter five – assessment of the conservation status of the indian ocean humpback dolphin (Sousa plumbea) using the IUCN red list criteria,” in Advances in Marine Biology, ed A. T. Jefferson and E. C.Barbara (Academic Press), 119–141. Unable to load your collection due to an error, Unable to load your delegates due to an error. MeSH Although white dolphins had been observed by local fishers for some time, the Taiwanese white dolphin (Sousa chinensis taiwanensis) was not scientifically documented until 2002 (Wang et al. With only around 1,500 adults remaining, Atlantic humpback dolphins are critically endangered and in desperate need of protection from burgeoning threats. 2015;72:1-16. doi: 10.1016/bs.amb.2015.04.001. The Indian Ocean Humpback Dolphin is a slow-swimming dolphin, typically travelling at an average speed of 4.8 km/hr. There are still concerns about apparently discrete and small subpopulations of humpback whales, including those in the Arabian Sea, the western North Pacific, the west coast of Africa, and . Epub 2015 Sep 26. (IUCN) list of . Considering the available evidence and following a precautionary approach, we considered this species as Vulnerable under IUCN criterion C2a(i) because the total number of mature individuals is plausibly fewer than 10,000, an inferred continuing decline due to cumulative impacts, and each of the populations studied to date is estimated to contain fewer than 1000 mature individuals. Australian humpback dolphins (Sousa sahulensis) were recently described as a new species endemic to northern Australia and potentially southern New Guinea. Humpback dolphins (Sousa spp.) Humpback dolphins’ main natural predators are sharks, with one photo-identification study in Australia revealing that 46% of sampled humpback dolphins had scarring associated with shark attacks19. Petition to List the Taiwanese Humpback Dolphin (Sousa chinensis taiwanensis) under . The magnificent blue whale, the tiny Chilean dolphin, the narwhal with its amazing twisted tusk - these are just a few of the many species of sea mammals living in the ocean depths. However, they can be encountered in nearshore waters, and in some areas, like Hong Kong, and the Musandam Peninsula of Oman, they are the stars of the show. The Atlantic humpback dolphn (Sousa teuszii) which occurs only in the coastal zone of West Africa is critically endangered, as is the North Atlantic Right whale (Eubalaena glacialis). These volumes are intended to form a cornerstone for humpback dolphin . & Curry, B. E. Humpback Dolphins (, Jefferson, T. A. The little known Indian Ocean humpback dolphin (Sousa plumbea) found along the south and east coast from False Bay to Kosi Bay, is facing extinction. Sci Rep. 2020 Sep 1;10(1):14366. doi: 10.1038/s41598-020-69863-6. Epub 2015 Oct 1. Entrapment in abandoned fishing nets and vessel strikes, habitat loss from dredging, land reclamation, port and . live-caught animals not being returned), are not being monitored. This decline is a serious concern. Would you like email updates of new search results? This decline is a serious concern. The primary distribution of this subspecies is a narrow band of waters . In some locations, humpback dolphins are also known to follow fishing trawlers in order to opportunistically feed on discarded and escaped fish8. Publication of the UN Convention on Migratory Species covering cetacea, their behavior, distribution, and migration patterns. Protecting critical habitats of the Indo-Pacific humpback dolphin, Sousa chinensis, is a hot topic of discussion for marine biodiversity conservation in China and many Southeast Asian countries.In practice, sound habitat protection action (HPA) planning often suffers from information gaps in macroscopic habitat configurations and changes in the habitat conditions of humpback dolphins.
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