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Post by brobear on Aug 21, 2020 8:09:54 GMT -5
www.jwildlifedis.org/doi/10.7589/0090-3558-41.2.298 DISEASES AND MORTALITY IN FREE-RANGING BROWN BEAR (URSUS ARCTOS), GRAY WOLF (CANIS LUPUS), AND WOLVERINE (GULO GULO) IN SWEDEN Ninety-eight brown bears (Ursus arctos), 20 gray wolves (Canis lupus), and 27 wolverines (Gulo gulo), all free-ranging, were submitted to the National Veterinary Institute, Uppsala, Sweden, during 1987–2001 for investigation of diseases and causes of mortality. The most common cause of natural death in brown bears was infanticide. Infanticide also was observed in wolverines but not in wolves. Traumatic injuries, originating from road or railway accidents, were the most common cause of death in wolves and occurred occasionally in brown bears. Most wolverines were submitted as forensic cases in which illegal hunting/poaching was suspected. Sarcoptic mange was observed in several wolves but not in brown bears or wolverines. Sarcoptic mange most likely was acquired from infected red foxes (Vulpes vulpes) that were killed by wolves. Other parasites and infectious diseases were only found sporadically.
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Post by brobear on Aug 21, 2020 8:19:48 GMT -5
weather.com/news/news/2019-10-13-six-grizzly-bear-deaths-linked-to-early-montana-snowstorms Six Grizzly Bear Deaths Linked to Early Snowstorms in Montana The most recent population estimate in 2018 said there are about 1,000 grizzly bears in the Northern Continental Divide Recovery Zone, which stretches more than 8,900 square miles. Early snowstorms in Montana are being linked to the deaths of five grizzly bears that died while trying to fill their bellies before hibernating for winter, wildlife officials say. The bears were feeding on the carcasses of cattle that had been caught in a late September blizzard on the Blackfeet Indian Reservation. Cold weather and snow had resulted in a loss of some of the bears' natural autumn food sources like chokecherries, according to Montana Fish, Wildlife and Parks.
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