0009菅 直人2012/05/08(火) 20:30:28.41ID:rtHTS0mq Threats to the Siberian tiger are: Poaching, disappearing forests and habitats by deforestation, bad weather conditions that cause their prey not to be able to find food which in turn causes scarcity in the tiger's food supply. Other carnivores such as the brown bear will steal their food right out from under them. 密猟、森林伐採、悪天候と並ぶ脅威がヒグマ等の肉食獣に獲物を目の前から横取りされる事である。
0010菅 直人2012/05/08(火) 21:50:58.76ID:rtHTS0mqhttp://www.piterhunt.ru/pages/animals/anim/hishniki/medved/bur/1.htm На Дальнем Востоке на медведя иногда нападает тигр, 極東のトラはしばしクマを攻撃することがある。 но крупный амурский медведь и для тигра оказывается очень серьезным противником. しかしアムールの大きなヒグマはトラにとって極めて深刻な敵である。
0013菅 直人2012/05/09(水) 15:48:39.65ID:+qLRn9V7 ロシア科学アカデミーより 4年に間の冬の観察から http://www.tigers.ru/books/ecolog/ch4_en.html The bear must be assigned first place among the predatory mammals that can be numbered among the competitors, the plunderers of the prey of the tiger, or the objects of its hunts. Both species of bears indigenous to the fauna of Primor'e inhabited the long-term study site.? During the "snowy" period of the year, contacts between a tiger and a bear can occur during only very narrow time intervals at the beginning and at the end of winter.
0014菅 直人2012/05/09(水) 15:49:00.13ID:+qLRn9V7http://www.tigers.ru/books/ecolog/ch12_en.html Various reactions were observed in such situations in the case of bears. One brown bear, which was staying in an area permanently inhabited by tigers, clearly felt himself to be the complete master in that place.
large, apparently male, Himalayan (or Asiatic black) bear (which we observed visually), like the brown bear that has already been mentioned, clearly did not fear the presence of tigers.? He walked along the tiger's tracks and rested in the same wild boar den as did the tiger.
0015菅 直人2012/05/09(水) 22:17:27.86ID:+qLRn9V7http://www.rcip.org/mshcpdocs/Vol2/appendixB/mammals/mountainlion.pdf A study of the ecological relationship between black bears (Ursus americanus),grizzly bears(Ursus arctos) and mountain lions in Glacier national Park in Montana and Yellowstone National Park in Wyoming found that bears displace lions from kills and that displaced lions lost an average of 1.1 kg/day of ungulate biomass, or 25-40 percent of their daily food requirements (Murphy et al. 1996). In addition, lions killed a higher number of ungulates when they were displaced by bears. Ruth and Hornocker (1996) documented grizzly bears tracking, treeing and killing mountain lions in Montana. グレーシャー国立公園やイエローストーン国立公園での研究で以下の事柄が明らかになった。それは、熊らがピューマらを追い払い、その獲物を奪うので、ピューマは一日に必要な食事の25〜40%を失う事になったという事である。 追い払われ獲物を奪われたピューマは、その分だけ多く獲物を狩る事になった。 Ruth and Hornocker (1996) documented grizzly bears tracking, treeing and killing mountain lions in Montana. 研究者らは、ピューマらを追い詰め殺 0016菅 直人2012/05/09(水) 22:18:00.89ID:+qLRn9V7http://www.answers.com/topic/amur-tiger The brown bear is the only serious competitor of the Amur tiger, which sometimes tries to dispute tiger's kills, especially in spring time when the bear gets out of its den and start looking for food. According to various sources, the bear is usually the victor in such battles, unless the tiger ambushes the bear, otherwise, the tiger usually retreats and does not engage in a fight with much stronger and bigger opponents 要約 1.ヒグマはアムールトラの唯一の競争相手である。 2.ヒグマは冬眠明けの春先にトラから獲物を奪いに行く。 3.多くの情報によるとこのようなケースで大抵の場合ヒグマが勝つ。 4.トラが待ち伏せをした場合は別だが、基本的にトラは自分より強くて大きい相手には戦いを挑まない
0017名無虫さん2012/05/10(木) 00:53:08.45ID:???>>1 このアホガキ暇すぎ お前が書いた捏造ソース誰が信用すんだアホw 0018菅 直人2012/05/10(木) 09:57:17.55ID:6z6p7VEK 英国のトラ保護団体saveindiastigersのサイトより。 http://www.saveindiastigers.co.uk/tripreport.html Sloth bear on many occasions have been able to kill a tiger by jumping on them from trees suprising the tiger but this wasn't going to happen today. ナマケグマが木から飛び降りてトラに襲いかかって殺す事が度々あるそうです。