A bee makes “summ, summ, summ” – every child knows, thanks to a well-known song. The sounds of animals songs, regardless of children, a sense, have now been able to show researchers in a study.
Because the swishing noise of bees or butterflies in the rain, certain flowers for the production of sweeter nectar, say Israeli researchers. They had studied the evening primrose species Oenothera drummondii. “Our results show for the first time that plants can respond quickly to the sound of pollinators,” write the scientists to Marine Vitus in a study that is not yet published as peer-reviewed article in a professional journal. The average sugar concentration in the nectar have increased within three minutes to around 20 percent.
The wings of the flying pollinators therefore create sound waves, which spread quickly through the air. “We show that the noise of the pollinators and artificial noise trigger with the same frequencies of Vibration of the petals, and a quick reaction,” says the study. This indicates “a plausible mechanism, in which the flowers serve as a hearing organ of the Plant.”
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The researchers took the sounds of bees and butterflies. They tested, these recordings and the recordings with the same and other frequencies to more than 650 evening primrose plant. Before and after they analyzed the nectar in the flowers.
The vast majority of flowers to be pollinators for their reproduction depends on the animal, such as bees or butterflies, they say. Hence, it is crucial for the Survival of the plants, to appear in the presence of such a Pollinator particularly attractive.
The study indicates, furthermore, that plants could also be due to noise influences caused by human beings, the researchers wrote. By “the ability to hear” could you also respond to herbivores or other animals.
That plants respond to the sounds that had already been shown in other studies. A few years ago, researchers reported that the arable land is a narrow wall of their chemical defence mechanisms against pests is high, if you take Kaugeräusche of caterpillars true. And 2017, a study was published that suggests: peas were able to perceive in a reproduction attempt, the sounds of running water and turned their direction of growth after that.