Bees are not getting enough sleep, thanks to some common pesticides


But two new studies have found that a commonly used insecticide is disrupting the sleep of bees and flies – with large consequences for important pests.

In one study, researchers looked at the effect of pesticides on eyebrow behavior, which is one of the most commonly used insecticides, along with nicrotinoids, as nectar to organisms, and then their movements in a rust field. By tracking

The effect of the insecticide – similar to the amount a bee would encounter in the wild – was stark.

“It seems that the body clock has been interrupted for barking – they forage much less, that foraging is happening more at nighttime, and they are sleeping too much during the day. This is their normal behavior. Is causing the mistake, ”Kiah Tasman, teaching associate at the University of Bristol School of Physiology, Pharmacology and University of Neuroscience, told CNN.

This, she explained, can have serious effects: “This is quite worrisome because other studies and our studies show that pioneering motivation has decreased.”

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Many plants – including the fruits and vegetables that we eat and feed our livestock – rely on pollinators, like bees, to pollinate.

About 90% of wild plants and 75% of major global crops depend on animal pollination, World Wildlife Fund notes.

According to the United States Department of Agriculture, bees account for a large portion of this workload: Pollinators, most often honey bees, are responsible for one in every three bites of food, and crop values ​​in the U.S. exceed 15 Let’s increase. Arab every year.

But bees and other pollinators are threatened by widespread pesticide use, habitat loss, climate crisis and parasites, so much so that the chances of spotting hardworking bumblebees in Europe and the US are down more than 30% from the last century.

Tasman warned that the bees are now “quite lethargic and they are going out less anyway.”

Tasman said, “If that is the time where they are managing to go out and flowers are not available at night time, then it becomes extremely rare that they are successful in collecting the food that the colony has. Needs to be developed and reproduced, ”Tasman, lead author said of the study.

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It can also affect how capable bees are in caring for their young, she said. Meanwhile, the same pesticides already damage the brains of baby bees.

In a second study, published on Thursday, the researchers focused their attention on flies – again, exposing them to neonicotinoids, and then using infrared rays to monitor how this affected movement.

The results showed that the pesticides were acting directly on the cells in the brain that run the body clock, which determines when sleep and activity occur during the day – and confusing them.

Tasman said, “It seems that these pesticides accumulate these cells in the shape of day, so the body does not know whether it is day or night.” In bees.

Researchers say their study can help us understand how these pesticides are affecting unsafe pests.

Tasman said, “It also gives us an indication that if we investigate to make insect-specific insecticides, we can get an idea of ​​how they are working in insects, maybe we can do something on insects To work. “

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