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Bed Bugs - How Do They See?
Though bed bugs love feeding on human blood they don't have eyes that see like human beings. These parasitic creatures have what is called a compound eye structure. It is thought that they don't see in colour, that they visualize in black and white.
A bed bugs eye is made up of hundreds of eye lenses called aspects that fit together in a hexagon structure. An easy way to picture what this insects eye looks like is to think of a bee honey comb in a conical shape and not flat. It's like a soccer ball, however on a smaller, more complex level. The person aspects consist of lenses, one on the surface and one on the inside. The bed bugs dual lens eye structure permits it to see in three-D. All of these aspects fitted collectively construct the parasites eye. These facets are linked to tubes that focus light down a central structure called the rhabdome. The rhabdome is light sensitive and directs the information by means of an optic nerve to the bugs brain.
Each individual side within the bed bugs eye sends a different picture to it's brain. When all these footage are processed and put collectively a mosaic is created. This 3-D mosaic is how the bed bug can see it's human host. It isn't known if, as the bed bug moves, the picture it sees updates on a whole or takes micro-seconds for every lens to replace the visual information. If this parasitic insect's vision updates lens by lens then it would see a constantly updating picture. This view would kind of be like looking by means of a kaleidoscope with 3-D glasses on.
Bed bugs come out at night time or within the dark to feed on their human hosts for a few reasons. One reason is because at night, if you find yourself in your bed sleeping, you won't feel them crawling on you and biting you. One other reason could possibly be that these blood suckers have light sensitive eyes that enable them to see better in the dark. These compound eyes may also pick up a heat signature of the human body. This is why the most importantity of bed bug bites happen on the middle of mass part of your body. Your heat signature is warmer in your torso, legs, and arms than it is in your fingers and toes.
People may have shade vision that updates constantly the place as bed bugs compound eyes see in black and white. Their eyes also don't always update the full image at once, however they'll see very well to do the job they are finest at. That job is to discover a human host in which to feed off of their blood.
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