中國鯉魚入侵威脅北美魚類

Carp invasion threatens North American fish
鯉魚入侵威脅北美魚類
2012-02-01

Environmentalists in North America are looking at options to control an invasive species of fish, the Asian carp, which threatens to squeeze out other species if its numbers continue to grow.
北美的環保人仕正在尋找選項來控制一種入侵魚類物種 - 亞洲鯉魚，如果它的數量繼續增長，這會威脅排擠其它物種。
Imported as a farmed species in the 1970s, Bighead and Silver carp from China were first seen as a way to produce cheap food, but floodwaters overwhelmed the fish farms, spreading the fish throughout the US Midwest.
在20世紀 70年代時從中國進口作為養殖品種，大頭銀鯉原先被看作為一種方法生產廉價食品，但洪水淹沒漁場將魚兒散佈在美國中西部。
The threat from the species is so grave that authorities could end up spending billions of dollars and physically separating two river basins.
來自物種的威脅是如此嚴重，當局最終可能花費數十億美元和實質地分開兩河流域。