Lions ___1___ the savannah are a staple of nature documentaries. But the millions of little lions that live in our homes and neighborhoods also lead fascinating lives. We know more about those lives now, because a two-year-long study used radio-transmitters to track cats at the southern edge of the cities of Champaign and Urbana in Illinois. ___2___. The study is in the Journal of Wildlife Management. [Jeff Horn et al., "Home Range, Habitat Use, and Activity Patterns of Free-Roaming Domestic Cats"]

The entire kittie cohort included both housecats and feral cats, and ranged over almost 6,300 acres. One feral cat’s range ___3___ 1,351 acres. New York’s Central Park covers 843 acres.

Owned cats with homes roamed way less than their feral counterparts. But they still ___4___ just under five acres. The pets were highly active just 3 percent of the time, compared with 14 percent for the cats that need to find their own food. The work should ___5___ protecting species that the cats hunt, and inform the efforts to stop the spread of feline contagious diseases.
【視聽(tīng)版科學(xué)小組榮譽(yù)出品】
roaming It would have taken a dozen field researchers to collect the same data. topped out at averaged a range of shed light on
熱帶叢林里的獅子無(wú)疑是自然紀(jì)實(shí)的主要觀察對(duì)象,但左鄰右舍成千上萬(wàn)的小貓咪也有豐富多彩的生活。研究人員耗時(shí)兩年,利用無(wú)線電發(fā)射機(jī)追蹤伊利諾伊州的尚佩恩和厄本那南端的貓科動(dòng)物。如果不是無(wú)線電發(fā)射機(jī),要獲取同樣的數(shù)據(jù)大概得耗費(fèi)眾多研究人員的時(shí)間和精力了。這項(xiàng)研究成果刊登在《野生動(dòng)物管理》雜志上。 整個(gè)研究對(duì)象包括家貓和野外生存的貓科動(dòng)物,范圍覆蓋約6300英畝。一只野生貓科動(dòng)物的活動(dòng)范圍最大可達(dá)1351英畝,而紐約中央公園也只占地843英畝…(果然很野。。。) 家貓的活動(dòng)范圍就小的多了,不過(guò)平均下來(lái)也有5英畝。家貓高度活躍的時(shí)間只有3%,而需要自行覓食的野生貓科動(dòng)物則有14%的時(shí)間是保持高度興奮狀態(tài)的。因此,人們也該意識(shí)到保護(hù)貓科動(dòng)物的獵食對(duì)象的重要性并采取行動(dòng)防止貓科動(dòng)物接觸性傳染病的傳播。