Why Are Bugs Attracted To Light
If you ve ever spent much time outside after dark on a summer night you ve probably noticed how certain bugs are attracted to light whether it s a porch light a streetlight or a campfire flame.
Why are bugs attracted to light. Moths flies and many other flying insects have positive phototaxis meaning they are naturally attracted to it. The bugs attracted to the porch light of course. There are only two suggestions i can make. The flower is a food source for many bugs.
The bugs that are most commonly associated with flying into porch lamps like moths and flies are positively phototactic meaning that they are attracted to light and tend to flock toward it. However once again this idea doesn t really make sense given the fact that as discussed insects are far more attracted to uv than light with longer wavelengths such as infrared. Indeed bugs tend to be more attracted to uv light rather than longer wavelength light such as yellow and red color. Keep in mind that talking about insects is almost the same as talking about animals in general.
Turn on your porch light after sunset and you will be treated to an aerial display by dozens if not hundreds of bugs. Many insects are attracted to lights at night some thinking it is the moon and trying to orient themselves to it. Buy a yellow light bulb for your outside light fixture or turn off your lights at night. Certain insects such as cockroaches or earthworms have negative phototaxis meaning they are repelled by exposure to light.
But some insects like cockroaches are negatively phototactic and they will scurry away when the light comes on mike mclean spokesperson for the. Some circle around others zigzag but they all seem to somehow be drawn to lights. The difference between insects attracted to light and those that are not is a phenomenon known as phototaxis. Entomologists understand why some insects are attracted to light bulbs.
Some people have postulated that since many flowers reflect uv light bugs may be attracted to artificial light sources that also emit small amounts of uv because they mistake them for a flower aka a food source. Bugs and moths have been found to follow the moon to stay upright fly straight and remain oriented. When a light is turned on moths and other bugs are deceived and fly directly into it with a satisfying sizzle.
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