Why Moths are Obsessed with Lamps | National Geographic - infonaturaenTV

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Why Moths are Obsessed with Lamps | National Geographic

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The story of the lamp and the moth is one of fatal attraction. The theory is that these primarily nocturnal insects have evolved to travel by the light of the moon and stars. This way of travel is called transverse orientation. An easy way to think about transverse orientation is to imagine a sailor travelling in the direction of the North Star. In theory, moths similarly follow the light source at a precise position and a precise angle to their bodies. This is how moths would navigate for millions of years ? by the light of the moon. What moth evolution couldn?t account for was the proliferation of constant electric light in our modern world. When Thomas Edison patented the lightbulb on January 27, 1880 it was a bad day in moth history. These lightbulbs began to act as artificial moons, confusing moths and overwhelming their senses. Since moths are accustomed to orienting to distant light sources, they can be easily disoriented when a closer light source, like a porch lamp, comes into view. When there are really bright lights or ultraviolet lights, the draw becomes almost irresistible ? and insects respond to those lights far more than any other wave length. At night, an ultraviolet source is a super stimulant to a moth. These artificial moons also make moths easy targets for predators like birds, bats, and many other animals. While much is still to be learned about moth behavior, one thing is certain. A moth?s obsession with lamps often proves to be a fatal one. ? Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Get More National Geographic: Official Site: http://bit.ly/NatGeoOfficialSite Facebook: http://bit.ly/FBNatGeo Twitter: http://bit.ly/NatGeoTwitter Instagram: http://bit.ly/NatGeoInsta Read more in "Why insects like moths are so attracted to bright lights" https://on.natgeo.com/2INgO9G Why Moths are Obsessed with Lamps | National Geographic https://youtu.be/Ul9HIX9YBbM National Geographic https://www.youtube.com/natgeo

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