However, it is the only living marine mammal with powerful, large limbs and feet that allow them to cover kilometres on foot and run on land. , The Inuit and Alaska Natives have many folk tales featuring the bears including legends in which bears are humans when inside their own houses and put on bear hides when going outside, and stories of how the constellation that is said to resemble a great bear surrounded by dogs came into being. , In 1992, a photographer near Churchill took a now widely circulated set of photographs of a polar bear playing with a Canadian Eskimo Dog (Canis lupus familiaris) a tenth of its size.  The treaty was ratified in October 2007.  The mtDNA of extinct Irish brown bears is particularly close to polar bears. The phrase is Government of Nunavut officials announced that the polar bear quota for the Baffin Bay region would be gradually reduced from 105 per year to 65 by the year 2013.  In 2010, the Ministry of Natural Resources and Environment published a strategy for polar bear conservation in Russia. For about 12 to 15 days, the family spends time outside the den while remaining in its vicinity, the mother grazing on vegetation while the cubs become used to walking and playing. During the swim, the bear lost 22% of her body mass and her yearling cub died. However, in 2006 it imposed a limit of 150, while also allowed recreational hunting for the first time. , Brown bears tend to dominate polar bears in disputes over carcasses, and dead polar bear cubs have been found in brown bear dens. https://www.definitions.net/definition/ursus+maritimus.  The pair wrestled harmlessly together each afternoon for 10 days in a row for no apparent reason, although the bear may have been trying to demonstrate its friendliness in the hope of sharing the kennel's food. Under those restrictions, permits from the United States Fish and Wildlife Service were required to import sport-hunted polar bear trophies taken in hunting expeditions in Canada. Ursus maritimus … Related words - Ursus Maritimus synonyms, antonyms, hypernyms and hyponyms. genus Thalarctos, Thalarctos - polar bears; in some classifications not a separate genus from Ursus. Fourteen polar bears from 13 North American zoos were monitored for 12–36 months, producing 25-year-long testosterone proﬁles.  The hollow guard hairs of a polar bear coat were once thought to act as fiber-optic tubes to conduct light to its black skin, where it could be absorbed; however, this hypothesis was disproved by a study in 1998. Yet, polar bears will very seldom attack full-grown adult walruses, with the largest male walrus probably invulnerable unless otherwise injured or incapacitated. Hunters commonly used teams of dogs to distract the bear, allowing the hunter to spear the bear or shoot it with arrows at closer range. , Polar bears accumulate high levels of persistent organic pollutants such as polychlorinated biphenyl (PCBs) and chlorinated pesticides. The vast, ice-covered ocean known as the Arctic actually has etymological roots in the ancient Greek word, ἄρκτος, meaning bear. During these four months, the pregnant female eats prodigious amounts of food, gaining at least 200 kg (440 lb) and often more than doubling her body weight.  However, evidence of hybrids between polar bears and brown bears, and of the recent evolutionary divergence of the two species, does not support the establishment of this separate genus, and the accepted scientific name is now therefore Ursus maritimus, as Phipps originally proposed. NCBI Ursus maritimus Annotation Release 100. Write it here to share it with the entire community.  Polar bear fur consists of a layer of dense underfur and an outer layer of guard hairs, which appear white to tan but are actually transparent. 1. This specimen, when mounted, stood 3.39 m (11 ft 1 in) tall on its hindlegs.  However, recent reanalysis of the fossil suggests that it was actually a brown bear. , Warnings about the future of the polar bear are often contrasted with the fact that worldwide population estimates have increased over the past 50 years and are relatively stable today.  However, due to the very small human population around the Arctic, such attacks are rare. , The range includes the territory of five nations: Denmark (Greenland), Norway (Svalbard), Russia, the United States (Alaska) and Canada. Fish and Wildlife Service published a draft conservation management plan for polar bears to improve their status under the Endangered Species Act and the Marine Mammal Protection Act. Search: Add your article Home Organisms Biota by country Biota of England Fossils of England Ursus maritimus tyrannus. Phoca vitulina. U.m. WordGame. Ursus jenaensis Ursus maritimus m. A taxonomic species within the family Ursidae – the polar bear, a species of bear that is native to the Arctic and the apex predator within its range.. References . , In Alaska, the effects of sea ice shrinkage have contributed to higher mortality rates in polar bear cubs, and have led to changes in the denning locations of pregnant females. Pronunciation of Ursus maritimus with 3 audio pronunciations, 4 synonyms, 1 translation and more for Ursus maritimus. Whereas northern communities kill all the polar bears they are permitted to take each year, only half of sport hunters with permits actually manage to kill a polar bear. , This article is about the animal. Define Ursus Maritimus. Only one case of a polar bear with rabies has been documented, even though polar bears frequently interact with Arctic foxes, which often carry rabies.  Since 1994, hundreds of sport-hunted polar bear trophies have been imported into the U.S. In 2015, the U.S. The resulting high concentrations cause Hypervitaminosis A, Hunters make sure to either toss the liver into the sea or bury it in order to spare their dogs from potential poisoning. Meaning: White bear of Arctic regions. , The relationship between ringed seals and polar bears is so close that the abundance of ringed seals in some areas appears to regulate the density of polar bears, while polar bear predation in turn regulates density and reproductive success of ringed seals.  Although ungulates are not typical prey, the killing of one during the summer months can greatly increase the odds of survival during that lean period. Contextual translation of "ursus maritimus" into English. Polar Bear. The length of these swims ranged from most of a day to ten days.  Only the liver was not used, as its high concentration of vitamin A is poisonous. ", "Ecological risk assessment of persistent organic pollutants in the arctic", "Chlorinated hydrocarbon contaminants and metabolites in polar bears (, "Rebuttal of "Polar Bear Population Forecasts: A Public-Policy Forecasting Audit, "The Energetic Value of Land-Based Foods in Western Hudson Bay and Their Potential to Alleviate Energy Deficits of Starving Adult Male Polar Bears", "Can polar bears use terrestrial foods to offset lost ice-based hunting opportunities?  The remains of polar bears have found in the stomachs of large Greenland sharks (Somniosus microcephalus), although it certainly cannot be ruled out that the bears were merely scavenged by this slow-moving, unusual shark.  Only once the spirit was appeased was the skull be separated from the skin, taken beyond the bounds of the homestead, and placed in the ground, facing north. We are going to drive around 200-240km, so we recommend that you have some snowmobile experience. , Courtship and mating take place on the sea ice in April and May, when polar bears congregate in the best seal hunting areas. Wikipedia ; Ursus maritimus on Wikispecies. , According to the World Wildlife Fund, the polar bear is important as an indicator of Arctic ecosystem health. Historically, the polar bear has also been known as the "white bear". Top synonyms for ursus maritimus (other words for ursus maritimus) are polar bear, ice bear and ursus. Ursus Maritimus . For other uses, see, "Ice Bear" redirects here. For wildlife at risk, such as some polar bear (Ursus maritimus) subpopulations, establishing comprehensive monitoring programs that include health status is an emerging need. The mating systems within the genus Ursus are primarily classified as polygynous, polyandrous and promiscuous. Shifts in polar bear diet during the ice-free season in western Hudson Bay", "Predation of Svalbard reindeer by polar bears", "White-beaked dolphins trapped in the ice and eaten by polar bears", "Rejected by their mother, polar cubs now under intensive care at Toronto Zoo", "Two cubs die as mother polar bear turns on her three newborns | National Post", "Infanticide and Cannibalism of Juvenile Polar Bears (, "Long-term trends in the population ecology of polar bears in Western Hudson Bay in relation to climatic change", Polar bears, grizzlies increasingly gather on North Slope, "ABC News: Grizzlies encroaching on polar bear Country", "Clash of the fiercest predators as shark eats polar bear", "Polar bears can swim vast distances, study finds", "The vitamin A content and toxicity of bear and seal liver", "U.S. and Russia sign pact to protect the polar bear", "Circumpolar Action Plan: Conservation Strategy for Polar Bears", "Did Polar Bears Really Lose at CITES?  The Yupik also refer to the bear as nanuuk in Siberian Yupik. Ursus is a genus from Ursidae family in the Carnivora order. Ringed seals are born weighing 5.4 kg (12 lb) and grown to an estimated average weight of only 60 kg (130 lb). Ursus polaris In the wild, old polar bears eventually become too weak to catch food, and gradually starve to death. ", Of the 19 recognized polar bear subpopulations, one is in decline, two are increasing, seven are stable, and nine have insufficient data, as of 2017.  Chemical communication can also be important: bears leave behind their scent in their tracks which allow individuals to keep track of one another in the vast Arctic wilderness. Type: noun; Copy to clipboard; Details / edit; plwordnet-defs. , Problematic interactions between polar bears and humans, such as foraging by bears in garbage dumps, have historically been more prevalent in years when ice-floe breakup occurred early and local polar bears were relatively thin. Whereas brown bears often maul a person and then leave, polar bear attacks are more likely to be predatory and are almost always fatal.  As the distance increases between the pack ice and the coast, females must swim longer distances to reach favoured denning areas on land. , The Marine Mammal Protection Act of 1972 afforded polar bears some protection in the United States. It is difficult to estimate a global population of polar bears as much of the range has been poorly studied; however, biologists use a working estimate of about 20–25,000 or 22–31,000 polar bears worldwide. Polar bear definition is - a large creamy-white carnivorous bear (Ursus maritimus synonym Thalarctos maritimus) that inhabits arctic regions.  Polar bears sometimes swim underwater to catch fish like the Arctic charr or the fourhorn sculpin. Since then, the trend seems to have abated, with tissue concentrations of PCBs declining between studies performed from 1989 to 1993 and studies performed from 1996 to 2002.  While most of that quota is hunted by the indigenous Inuit people, a growing share is sold to recreational hunters. Polar Bear are specifically adapted to the Arctic coastal marine environment and their life history is substantially dependent on sea-ice habitat.  The growth of the human population in the Eurasian Arctic in the 16th and 17th century, together with the advent of firearms and increasing trade, dramatically increased the harvest of polar bears.  In September 2015, the polar bear range states agreed upon a "circumpolar action plan" describing their conservation strategy for polar bears.  Although most polar bears are born on land, they spend most of their time on the sea ice. Multiple cases of adoption of wild cubs have been confirmed by genetic testing. This status was re-evaluated and confirmed in April 1999, November 2002, and April 2008. The cheek teeth are smaller and more jagged than in the brown bear, and the canines are larger and sharper. Thus, now the Alaskan population more resembles the world population in that it is more likely to den on land. Taxon Name: Ursus maritimus Phipps, 1774 Synonym(s): • Thalarctos maritimus Regional Assessments: • Europe Common Name(s): • English: Polar Bear • French: Ours blanc, Ours polaire • Spanish: Oso Polar Taxonomic Source(s): Wilson, D.E. Unlike brown and black bears, polar bears are capable of fasting for up to several months during late summer and early fall, when they cannot hunt for seals because the sea is unfrozen. The killing of females and cubs was made illegal in 1965. , The polar bear is the most carnivorous member of the bear family, and throughout most of its range, its diet primarily consists of ringed (Pusa hispida) and bearded seals (Erignathus barbatus). 1 decade ago. Nine metric traits in skull and lower jaw were measured. The Inuit refer to the animal as nanook (transliterated as nanuq in the Inupiat language). Due to the absence of human development in its remote habitat, it retains more of its original range than any other extant carnivore.  The subpopulations display seasonal fidelity to particular areas, but DNA studies show that they are not reproductively isolated.  Many attacks by brown bears are the result of surprising the animal, which is not the case with the polar bear. , The white coat usually yellows with age.  In 2010, the 2005 increase was partially reversed. I think it's the title of polar bears. The meaning of health for wildlife and perspectives on how to assess and measure health, are not well characterized. , The bear family, Ursidae, is thought to have split from other carnivorans about 38 million years ago.  When sea ice is unavailable during summer and early autumn, some populations live off fat reserves for months at a time, as polar bears do not 'hibernate' any time of the year.  On average, each litter has two cubs. A polar bear may charge a group of walruses, with the goal of separating a young, infirm, or injured walrus from the pod. Of these, indicators of body condition, disease and Wildlife health parasite exposure, contaminant exposure, and reproductive success were ranked as most important. Polar bears consume a wide variety of other wild foods, including muskox (Ovibos moschatus), reindeer (Rangifer tarandus), birds, eggs, rodents, crabs, other crustaceans, fish and other polar bears. WordSense.eu Dictionary: maritimus - meaning, definition, synonyms, origin. Thus "Ursus maritimus" can be translated into "bear of the sea". From Wikimedia Commons, the free media repository. , In general, adult polar bears live solitary lives. They can occasionally drift widely with the sea ice, and there have been anecdotal sightings as far south as Berlevåg on the Norwegian mainland and the Kuril Islands in the Sea of Okhotsk. Then they begin the long walk from the denning area to the sea ice, where the mother can once again catch seals. 6 Answers. Polar bear definition, a large white bear, Ursus maritimus, of the arctic regions. Thalarctos maritimus, The polar bear (Ursus maritimus) is a hypercarnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. Classified under: Nouns denoting animals. Canada allocates a certain number of permits each year to sport and subsistence hunting, and those that are not used for sport hunting are re-allocated to indigenous subsistence hunting. While the algae is harmless to the bears, it is often a worry to the zoos housing them, and affected animals are sometimes washed in a salt solution, or mild. By 2080, they could disappear from Greenland entirely and from the northern Canadian coast, leaving only dwindling numbers in the interior Arctic Archipelago. ★ Ursus maritimus tyrannus - fossils of england .. Add an external link to your content for free. This trip is 2 hours longer than our Ursus Maritimus – King of the Arctic trip, meaning that we will get more time on the east coast. In unusually warm conditions, the hollow tubes provide an excellent home for algae. In Russian, it is usually called бе́лый медве́дь (bélyj medvédj, the white bear), though an older word still in use is ошку́й (Oshkúj, which comes from the Komi oski, "bear"). Polar bears have been observed to hunt the small Svalbard reindeer (R. t. platyrhynchus), which weigh only 40 to 60 kg (90 to 130 lb) as adults, as well as the barren-ground caribou (R. t. groenlandicus), which is about twice as heavy as the former. These beautiful bears can be found on the continents of North America and Eurasia, mostly around the North of the Arctic Circle. , When stalking land animals, such as muskox, reindeer, and even willow ptarmigan (Lagopus lagopus), polar bears appear to make use of vegetative cover and wind direction to bring them as close to their prey as possible before attacking. (2011).  However, the feet are very large to distribute load when walking on snow or thin ice and to provide propulsion when swimming; they may measure 30 cm (12 in) across in an adult. Member countries agreed to place restrictions on recreational and commercial hunting, ban hunting from aircraft and icebreakers, and conduct further research.  One scientist found that 71% of the Hudson Bay bears had fed on seaweed (marine algae) and that about half were feeding on birds such as the dovekie and sea ducks, especially the long-tailed duck (53%) and common eider, by swimming underwater to catch them. Acadagnostus: Acamptonectes: Michio Hoshino, a Japanese wildlife photographer, was once pursued briefly by a hungry male polar bear in northern Alaska. Polar bears (Ursus maritimus) will take eggs and young on occasion (Haney & MacDonald 1995). We're doing our best to make sure our content is useful, accurate and safe.If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly. Such was the intensity of human fascination with this magnificent predator, the only marine bear. Asked by Wiki User. 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