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Boat Noise Makes Fish Miss Meals

船兒噪聲響?魚兒覓食慌

Do you dislike restaurants where noise drowns out dinner? Seems that fish don't like a din with dinner either. Because loud sounds, for example from whizzing speedboats, distract them, and apparently impair their predatory skills. So suggests a study in the journal Public Library of Science ONE. [Julia Purser and Andy Radford, "Acoustic noise induces attention shifts and reduces foraging performance in three-spined sticklebacks (Gasterosteus aculeatus)"]

在吵吵鬧鬧的餐廳里用餐你愿意么？魚兒們貌似不太愿意被打擾?？焱Ъ柴Y而過的噪音就很讓它們心煩，不僅如此，它們的捕食能力也大受影響。該研究發(fā)現(xiàn)刊登在《公共科學(xué)圖書館·綜合》雜志上。

Researchers took 12 fish tanks, and killed the gurgling filter sound to mimic the quiet of a calm lake. Then they immersed a speaker in each tank. And watched three-spined stickleback fish hunt water fleas, to the accompaniment of either white noise calibrated to match the noise level of speedboats or a silent track as a control.

研究人員找來12個(gè)魚缸，然后把各個(gè)魚缸里面的過濾器全部“靜音”，這樣一來整個(gè)魚缸就跟平靜的湖水一樣安靜了，他們又給每個(gè)魚缸裝了一個(gè)揚(yáng)聲器。接下來就是一邊播放用白噪音模擬出來的快艇噪音，一邊觀察魚缸里的三刺魚怎樣捕食水蚤了；對照組在靜音模式下進(jìn)行。

Fish in each trial ultimately gobbled up the same numbers of prey. But the sticklebacks in noisy tanks spent more time attacking what's not for dinner, like bits of algae. And they often captured water fleas only to spit them out again.

實(shí)驗(yàn)組和對照組中的三刺魚最終捕食了相同數(shù)量的水蚤，區(qū)別在于，實(shí)驗(yàn)組中的三刺魚在藻類等非捕食目標(biāo)上費(fèi)了不少功夫，不僅如此，它們還常常把捕獲的水蚤吐出來╮(╯▽╰)╭

The researchers say the buzz of boats may divert attention from the hunt—causing fish to waste more time and energy chasing prey. Such inefficiency could contribute to declines in their numbers. And unlike us, fish can't ask the restaurant manager to turn the volume down as they dine.

研究人員稱船發(fā)出的噪聲能分散魚兒們的注意力——使得它們耗費(fèi)更多的時(shí)間、體力捕食。久而久之，魚類數(shù)量就會減少。更杯具的是，魚類也不能像我們一樣，在用餐的時(shí)候讓老板把音量調(diào)小一點(diǎn)╮(╯▽╰)╭

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