People actively hunted for the sea otters’ wool in the 18th century, which meant destructive influence for the species, and sea otters began to occur less frequently and less frequently in the natural habitat. Speaking about the why so much fishing gear was found in the river, Dr Nelms said: "There is no system for fishers to recycle their nets. For example, the 18-year-old federal recovery plan for southern sea otters, mandated under the Endangered Species Act, requires extensive revision because much of the scientific data upon which it was based are no longer relevant. The researchers used a list of 21 river species of "conservation concern" identified by the Wildlife Institute for India. Otters Conservation Status. Ghost fishing threatens endangered river dolphins, critically endangered turtles, otters. The sea otters get covered from head to tail in oil which permeates into their coat that disrupts the insulation. This is why conservation efforts are in place to help them continue to survive. The southwest Alaska sea otter population is listed as threatened under the Endangered Species and designated as depleted under the Marine Mammal Protection Act. When they try to groom their fur by licking, they ingest the poisonous oil and die of toxicity. By Staff Writer Last Updated Mar 29, 2020 1:41:16 PM ET. The trade was banned in 1910, with signing of the treaty between America, Japan, Russia and Great Britain. “For the conservation of the sea otter, this would be huge.” But there are political challenges. Many of the different species of Otters have been heavily hunted in the past. The main reason that these Otters were hunted though was for their fur. They also have a reduced population size, which puts them in danger of … Or view hourly updated newsfeeds in your RSS reader: Keep up to date with the latest news from ScienceDaily via social networks: Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. The central sea otter (also known as the Asian sea otter) is the largest of the subspecies and is found around islands in the western Pacific. “ It would essentially end up lifting the sea otter out of its endangered species status,” said Brent Hughes, assistant professor of biology at Sonoma State and lead author of the study published in PeerJ: the Journal of Life and Environmental Sciences. Stats reveal that many otters died between years 1999-2006 of shark bites. Many of … When they try to groom their fur by licking, they ingest the poisonous oil and die of toxicity. And research on and monitoring of southern sea otters … ScienceDaily, 25 November 2020. University of Exeter. . They include the Southern River Otter, Hairy Nosed Otter, Giant Otter, and the India Smooth Coated Otter. (accessed November 29, 2020). The trade of sea otters was continued until the animals were virtually wiped out. Loss of sea otters accelerating the effects of climate change Date: September 10, 2020 Source: Bigelow Laboratory for Ocean Sciences Summary: The impacts of … The study says entanglement in fishing gear could harm species including the critically endangered three-striped roofed turtle and the endangered Ganges river dolphin. Sea otters eat 25% of their body weight a day. "A high proportion of the fishing gear we found was made of nylon 6, which is valuable and can be used to make products including carpets and clothing," she said. It is known that uterine sea otters feed their puppies for up to one year, and by this time the puppies can hunt and feed themselves. Historically there were about 16,000 sea otters from the Oregon-California border to Baja, Mexico. Ghost fishing threatens endangered river dolphins, critically endangered turtles, otters Date: November 25, 2020 Source: University of Exeter Summary: A sea otter resting in kelp in Monterey Bay, California. "Many held the view that the river 'cleans it away', so one useful step would be to raise awareness of the real environmental impacts.". After a gestation period of up to a year gives birth to a single calf, but there are reports that often these animals are born and twins. National Geographic Fellow and science co-lead of the expedition Professor Heather Koldewey, of ZSL (the Zoological Society of London) and the University of Exeter, said the study's findings offer hope for solutions based on "circular economy" -- where waste is dramatically reduced by reusing materials. Have any problems using the site? As a result the numbers of them are quite low. The sea otter fur also consists of two layers, a waterproof layer of long protective hair with a layer of short thick fur under it. Surveys along the length of the river, from the mouth in Bangladesh to the Himalayas in India, show levels of waste fishing gear are highest near to the sea. In the United States Otters are protected under the Endangered Species Act. Sea otters are among the marine mammals at ... [+] risk of infection by the SARS-CoV2 coronavirus. This isn’t exclusive to sea otters alone — river otters are also known to maintain river ecosystems and a healthy fish population by eating diseased fish. People actively hunted for the sea otters’ wool in the 18th century, which meant destructive influence for the species, and sea otters began to occur less frequently and less frequently in the natural habitat. University of Exeter. "The Ganges River supports some of the world's largest inland fisheries, but no research has been done to assess plastic pollution from this industry, and its impacts on wildlife," said Dr Sarah Nelms, of the Centre for Ecology and Conservation on Exeter's Penryn Campus in Cornwall. Sea otters are known to mate all year round. "Collection and recycling of nylon 6 has strong potential as a solution because it would cut plastic pollution and provide an income. Sarah E. Nelms, Emily M. Duncan, Surshti Patel, Ruchi Badola, Sunanda Bhola, Surfarsha Chakma, Gawsia Wahidunnessa Chowdhury, Brendan J. Godley, Alifa Bintha Haque, Jeyaraj Antony Johnson, Hina Khatoon, Sumit Kumar, Imogen E. Napper, Md. ScienceDaily. They combined existing information on entanglements of similar species worldwide with the new data on levels of waste fishing gear in the Ganges to estimate which species are most at risk. Threats Competition with commercial shellfish fisheries, entanglement in commercial fishing gear, oil spills, disease outbreaks, contaminants, subsistence harvests, killer whale predation. The sea otters get covered from head to tail in oil which permeates into their coat that disrupts the insulation. 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The study, led by researchers from the University of Exeter, with an international team including researchers from India and Bangladesh, was conducted as part of the National Geographic Society's "Sea to Source: Ganges" expedition. The northern sea otter is native to the territories of Alaska and the northwest of the Pacific Ocean. Questions? The sea otter is a well-known marine mammal with a historical range along the west coast of North America. By the year 1840, almost all of the California sea otters were exterminated. Materials provided by University of Exeter. But it may be drawing attention away from the value of other habitat that could truly help the endangered species in its recovery—estuaries. As top predators, sea otters are critical to maintaining the balance of nearshore ecosystems, such as kelp forests, embayments and estuaries. It is not intended to provide medical or other professional advice. The otters are listed as a threatened species under the Endangered Species Act.