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A rabbit might outrun a fox, but stalks of wheat aren’t making any quick getaways. Plants, for the most part, don’t flee from predators2.
But some primitive3 marine4 plants are breaking the rules. Marine scientists at the University of Rhode Island School of Oceanography recently discovered a species of phytoplankton that actively5 avoids being eaten.
The scientists observed that the phytoplankton, called Heterosigma akashiwo, swam away from zooplankton, its natural predator1, yet remained undaunted by the presence of predators with an appetite for other things.
What’s more, when the scientists provided an area that the predators couldn’t tolerate, sort of a safe haven6 if you will, the phytoplankton took refuge in that location. They also avoided empty water that had previously7 contained predators, leading researchers to believe they’re responding to some sort of chemical signal. The discovery is published in the journal PLoS ONE.
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1 predator | |
n.捕食其它动物的动物;捕食者 | |
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2 predators | |
n.食肉动物( predator的名词复数 );奴役他人者(尤指在财务或性关系方面) | |
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3 primitive | |
adj.原始的;简单的;n.原(始)人,原始事物 | |
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4 marine | |
adj.海的;海生的;航海的;海事的;n.水兵 | |
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5 actively | |
adv.积极地,勤奋地 | |
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6 haven | |
n.安全的地方,避难所,庇护所 | |
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7 previously | |
adv.以前,先前(地) | |
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8 literally | |
adv.照字面意义,逐字地;确实 | |
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