LED lights add new features to trap insects

A few days ago, the announcement of the Nobel Prize winner in 2014 made the light emitting diode (LED) It has received enough public praise, but a new study finds that this may be bad news for insects. Compared with the yellow halo emitted by sodium steam bulbs, moths, flies and other insects are more easily attracted by the spectrum of led light. A new study published recently in the journal Ecological Applications shows that traps near led catch 48 more insects than traps near sodium vapor bulbs. Overall, the researchers captured and identified more than 20 thousand bugs, including moths and flies. This attraction is fatal. It can turn off the navigation ability of insects and expose them to predators. Greater ecological effects may include the destruction of the food chain. One point that should be paid special attention to is that LED lights near ports can attract flying pests accidentally brought by ships, such as Gypsy moth, an invasive species that can destroy forests. Unfortunately, these tests show that simply distorting the spectrum of led cannot reduce their attraction to insects. Perhaps some filters, or a combination of red, green and blue LEDs, will reduce visual appeal, but may increase cost and energy consumption.