Editing Ultraviolet (section)

====Biological====
Some animals, including birds, reptiles, and insects such as bees, can see near-ultraviolet wavelengths. Many fruits, flowers, and seeds stand out more strongly from the background in ultraviolet wavelengths as compared to human color vision. Scorpions glow or take on a yellow to green color under UV illumination, thus assisting in the control of these arachnids. Many birds have patterns in their plumage that are invisible at usual wavelengths but observable in ultraviolet, and the urine and other secretions of some animals, including dogs, cats, and human beings, are much easier to spot with ultraviolet. Urine trails of rodents can be detected by pest control technicians for proper treatment of infested dwellings.

Butterflies use ultraviolet as a [[Ultraviolet communication in butterflies|communication system]] for sex recognition and mating behavior. For example, in the ''[[Colias eurytheme]]'' butterfly, males rely on visual cues to locate and identify females. Instead of using chemical stimuli to find mates, males are attracted to the ultraviolet-reflecting color of female hind wings.<ref>{{cite journal | last1 = Silberglied | first1 = Robert E. | last2 = Taylor | first2 = Orley R. | year = 1978 | title = Ultraviolet Reflection and Its Behavioral Role in the Courtship of the Sulfur Butterflies Colias eurytheme and C. philodice (Lepidoptera, Pieridae) | journal = Behavioral Ecology and Sociobiology | volume = 3 | issue = 3| pages = 203–43 | doi=10.1007/bf00296311| bibcode = 1978BEcoS...3..203S | s2cid = 38043008 }}</ref> In ''[[Pieris napi]]'' butterflies it was shown that females in northern Finland with less UV-radiation present in the environment possessed stronger UV signals to attract their males than those occurring further south. This suggested that it was evolutionarily more difficult to increase the UV-sensitivity of the eyes of the males than to increase the UV-signals emitted by the females.<ref name= "Meyer-Rohow & Järvilehto 1997">{{cite journal| last1=Meyer-Rochow|first1=V.B.|last2=Järvilehto|first2=M.|title=Ultraviolet colours in Pieris napi from northern and southern Finland: Arctic females are the brightest!| journal= Naturwissenschaften|date=1997|volume=84|issue=4|pages= 165–168|bibcode=1997NW.....84..165M|doi=10.1007/s001140050373|s2cid=46142866}}</ref>

Many insects use the ultraviolet wavelength emissions from celestial objects as references for flight navigation. A local ultraviolet emitter will normally disrupt the navigation process and will eventually attract the flying insect.
[[File:ultraviolet trap entomologist.jpg|thumb|right|Entomologist using a UV lamp for collecting [[beetles]] in [[Chaco Department|Chaco]], [[Paraguay]]]]

The [[green fluorescent protein]] (GFP) is often used in [[genetics]] as a marker. Many substances, such as proteins, have significant light absorption bands in the ultraviolet that are of interest in biochemistry and related fields. UV-capable spectrophotometers are common in such laboratories.

Ultraviolet traps called [[bug zapper]]s are used to eliminate various small flying insects. They are attracted to the UV and are killed using an electric shock, or trapped once they come into contact with the device. Different designs of ultraviolet radiation traps are also used by [[entomologists]] for [[collecting]] [[nocturnal]] insects during [[faunistic]] survey studies.