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In the hours before a thunderstorm, I feel light-headed, my eyes are heavy, my hands tingle and I can't concentrate. Is this common? Does it relate to changes in atmospheric pressure?


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Bernard Roitberg, an entomologist at Simon Fraser University in Burnaby, Canada, thinks that the researchers' explanation for the changes in behaviour is correct. But Robert Matthews, an entomologist at the University of Georgia in Athens, says that more examples are needed before that can be confirmed.

Bento suspects that insects use tiny hair-like receptors on their cuticle to sense pressure changes. The moths and aphids had similar reactions.

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Males of both species were less responsive to calling in both rising and falling pressure conditions than when the pressure was stable. up.

Such theories have had little evidence to support them, but now, a team of scientists has found a concrete example: insects shy away from sex in response to the drop in atmospheric pressure that presages rain. Listen In Hilo1 Hawaii looking for something to do Podcast Our award-winning show features highlights from the week's edition of Natureinterviews with the people behind the science, and in-depth commentary and analysis sex journalists around the storm.

Pellegrino, A. Roitberg, B. Nature Brian is a freelance journalist based in New Brunswick, Canada. People have long claimed that animals can predict the weather, for examply by curtailing their activity when rain threatens. You will be re-directed back to this where you will see comments updating in real-time and have the ability to recommend comments to other users. Potato aphids were less interested in mating when pressure changes heralded a storm. They need to be adapted to do it right. With colleagues at the University of Western Ontario in London, Canada, they tested how three unrelated species — the curcurbit beetle Diabrotica speciosathe before armyworm need Pseudaletia unipuncta the the potato aphid Macrosiphum euphorbiae — reacted to changes in atmospheric pressure.

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The fact that similar behaviours were seen in insects from completely different orders indicates that the ability is widespread, says Bento. Our award-winning show features highlights from the week's edition of Natureinterviews with the Anyone need to bust a Mexico nut behind the science, and in-depth commentary and analysis from journalists around the world. For the best commenting experience, please or register as a user and agree to our Community Guidelines.

Roitberg made similar observations 20 years ago, showing that in falling atmospheric pressure, female parasitic wasps Leptopilina heterotoma looking for somewhere to deposit their eggs Lonely wives want casual sex Torrey lower their standards and use hosts that had already been parasitized 2.

Rising pressure, which can al the approach of windy conditions, also put the creatures off their stride: female aphids, which must balance precariously on the edge of leaves to call, reduced their calling. The females of both small, light insects reduced their 'calling' behaviour — wafting sex pheromones to attract mates — when rain threatened.

Conditions such as light, temperature and humidity were controlled in the lab, La verkin UT cheating wives the researchers wondered whether the insects were reacting to falling pressure to try to protect themselves from damaging rain. Until Decemberhe was Nature 's online news editor.

References Pellegrino, A. Related stories and links From nature. When atmospheric pressure was dropping rapidly, the male beetles became much less responsive to female pheromones. If placed close to female beetles they would still mate, but most skipped their usual courtship behaviours and N Athens Georgia housewives wanting nsa sex straight to copulation — as if they were trying to get it over with quickly, before a deadly storm arrived.

But, he adds, it does make evolutionary sense — especially for those that spend their entire adult life mating. What matters in science — and why — free in your inbox every weekday.

Most often, she says, this was when rain was predicted.