Penguins lost ability to taste fish 企鵝失去對(duì)魚的味覺(jué)
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Penguins have lost the ability to taste fish
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企鵝只能品嘗到食物的酸味和咸味。一項(xiàng)基因研究顯示,不會(huì)飛的鳥(niǎo)類進(jìn)化過(guò)程中早就失去了大部分的味覺(jué)。以下是BBC 記者Helen Briggs 發(fā)回的報(bào)道：
With their waddling gait and lack of flight, penguins have long been an oddity in the bird kingdom. Now zoologists have discovered they're unusual too in their sense of taste.
Most birds can't detect sweet things. But penguins have also lost the taste for bitter and umami, or meaty flavours. Scientists think fish would taste of little but salt to a penguin. And because they swallow fish whole they may not be able to discern flavours at all.
They say the puzzle could be explained by the penguins' evolution in the extreme cold of Antarctica
