Reduced range and population size, vulnerability to oil spills, and oil spill risk from coastal tanker traffic were the primary reasons for listing. This article is only an excerpt. Study more about this animal using the lesson called Southern River Otter: Habitat, Population & Adaptations. 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. An adult North American river otter can weigh between 5.0 and 14 kg (11.0 and 30.9 lb). - Anatomy, Family & Diet, Baikal Seal: Habitat, Adaptations, Predators & Facts, Ringed Seal: Habitat, Population & Adaptations, Signs, Symptoms & Causes of Bloat in Dogs, To learn more about the information we collect, how we use it and your choices visit our, Biological and Biomedical Currently this species is classified as Least Concern (LC) on the IUCN Red List and its numbers today remain stable. The giant otter or giant river otter (Pteronura brasiliensis) is a South American carnivorous mammal. The other population is located in southern Patagonia in ces of … In any of these habitat types, they prefer well-sheltered areas with rocky caves or dense vegetation. These propel them through the water at high speeds to help them hunt. piscivore new Creature Feature is posted? What is the Difference Between Blended Learning & Distance Learning? It prefers to eat crayfish and freshwater mussels. These otters are extremely dextrous, using their forepaws to feel for molluscs and crustaceans in rocks, vegetation and mud. Mink sign was recorded in 29% of the aquatic habitat where otter sign was found. Interestingly, their front feet are only partly webbed. Search for an endangered species profile. This means that its trapping season is carefully controlled, and that each pelt must be registered with the Department of Natural Resources. Anyone can earn credit by exam that is accepted by over 1,500 colleges and universities. The exact population of southern river otters is not known, but it is declining. The Southern River Otter is much more rare and the Marine Otter is on the verge of extinction with 3 isolated population the most important of which is found in the Naheul Huapi National Park (Aued, M.B et al 2003). Population. It sometimes is considered a subspecies of ''Lontra canadensis''. A survey of the huillin or southern river otter Lutra provocax distribution was made in Lanin, Puelo and Los Alerces National Parks. The species is legally protected both locally and internationally. a. Log in here for access. In this study, we use multiple lines of evidence to assess the feeding strategies of the endangered Southern river otter, by determining seasonal prey availability (electrofishing), analysis of undigested prey remains (spraints), and the use of stable isotopes (δ 15 N and δ 13 C) in otter spraints (n = 262) and prey in a wetland ecosystem of southern Chile (39°49′S, 73°15′W). List of all endangered species (animals & plants). Social groups are generally composed of the female and her offspring. Population estimates are unavailable. first two years of college and save thousands off your degree. Congo clawless otters inhabit equatorial Africa, from southeastern Nigeria to Gabon, down to Uganda and Burundi. Breeding may occur in July and August, and the female gives birth to up to 4 pups after a gestation period of 60 days. The southern river otter, Lontra provocax, is a species of otter that lives in Chile and Argentina.Although called a "river otter", it inhabits both marine and freshwater environments. The southern river otter, Lontra provocax, is a species of otter that lives in Chile and Argentina.Although called a "river otter", it inhabits both marine and freshwater environments. About 2,000 otters are trapped each year out of a total population of 12,000. However, it is sensitive to pollution, and will disappear from tainted areas. For southern sea otters to be considered for delisting under the Endangered Species Act, the population index would have to exceed 3,090 for three consecutive years, according to the Southern Sea Otter Recovery Plan. Giant otters are found throughout almost all of South America. Southern river otters are medium sized, as far as otters go. Select a subject to preview related courses: Their swimming is helped further by the webbing on their feet. Population estimates are unavailable. {{courseNav.course.topics.length}} chapters | Otters are playful, often wrestling or spending hours sliding down muddy or snow-packed stream banks. Their status was downgraded to state endangered in 1989. Southern river otters are found in Argentina and Chile. A study by Southern Illinois University estimated that the number of river otters in release areas grew to more than 8,400 in 2009 (about 1 otter per 5 square miles). games and coloring pages! Get access risk-free for 30 days, The … However finding them can sometimes be very challenging. Southern Sea Otter. {{courseNav.course.mDynamicIntFields.lessonCount}} lessons Sixty‐eight per cent of mink scats were collected at otter rest sites. Adults can reach an average body length of 22 to 28 inches with a tail length of 14 to 18 inches. Did you know… We have over 220 college The inner, softer layer traps air and keeps them warm. A survey of the southern river otter Lutra provocax in Lanı´n Puelo and Los Alerces National Parks, Argentina inferring a larger population present (Mason & and evaluation of its conservation status. The reintroduction went so well that the river otter was removed from the state-endangered list in 2005. We examined age-specific reproductive capacity of a Lontra canadensis (River Otter) population in southern Missouri that was the focus of intense restoration efforts in the 1980s and early 1990s. This region is covered by temperate forest. Create an account to start this course today. However, while southern river otters face significant threats from humans, they have a number of adaptations that make them well suited for their natural environment. Nearly 280 river otters were captured in the Adirondacks and Catskills and relocated to 15 sites in central and western New York during a three-year period in the 1990s. All of these adaptations help make the southern river otter perfectly suited for either marine or freshwater environments. This estimate does not include parts of western and southern Illinois where releases were not made … The southern river otter is also affected by pollution of wetlands, since this species requires clean water. The marine otters mostly live along the southern tip of this area. The Southern River Otter is closely related to many other otter species, including the North American River Otter, and the marine otter. north american river otter habitat. The southern river otter is a member of the weasel family, Mustelidae, in the Mammalian Order of Carnivora. Table 1. Sciences, Culinary Arts and Personal River Otter (Lutra canadensis) Description The otter is the largest member of the weasel family (Mustelidae) found in South Carolina. Population number. To learn more, visit our Earning Credit Page. The southern river otter is found in the southern parts of Chile and western Argentina. Size. Other mustelids include ferrets and mink. It sometimes is considered a subspecies of Lontra canadensis.The southern river otter is listed as endangered, due to illegal hunting, water pollution, and habitat loss. This is the major cause of their current low population numbers and endangered conservation status. The southern river otter prefers estuaries, rivers, and lakes with fresh water for its habitat. The otters in freshwater habitats also prefer dense plant life for protection. 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