Two groups of bioluminescent insects, however, were actually more attracted to the amber-colored light. “But if this is a general pattern, then it has obvious implications for the kind of lighting that should be used around housing and human settlements,” he adds. More work needs to be done to find out which insect vectors are attracted to which light wavelengths, says Stewart. The three lamps used in the study: from top to bottom a LED 3000k lamp with a yellow filter, with no filter, and with an amber filter. “Our evaluation of known insect disease vectors showed a substantial reduction of potential vectors at amber lamps,” the study authors write in the paper. The team also suggests fewer disease-carrying insects gather at amber lights. The amber-filtered traps had 34 percent fewer species and 60 percent fewer insects in total than the white light traps. A significantly greater variety of species-and far more individual insects-were captured in the white LED traps. Some 15,000 insects were captured, belonging to 763 unique species. The scientists counted the number and type of insects attracted to the traps during two different time periods at night. A trap without light was used as the control. The traps were illuminated with an LED white bulb, yellow-filtered bulb, or an amber-filtered bulb. The researchers set light traps in 12 different locations. The company has still not developed the land as of early 2021, in part because of the Covid-19 pandemic. The scientists’ goal was to recommend lighting that would cause the least ecological harm. Smithsonian’s National Zoo and Conservation Biology Instituteĭeichmann and her colleagues tested their hypotheses in a virgin lowland rainforest area of northern Peru that was slated to be developed by a gas and oil company. Smithsonian researcher Christian Luces turning on one of the traps used in the study. “As the adoption of ALAN continues to expand into pristine environments that have had no prior experience of artificial illumination, especially in the tropics, there is an urgent need to understand the consequences for whole communities of insects,” writes Stewart, who is also the editor of the special issue where the paper appeared, in a commentary article accompanying the paper. The study is valuable because it’s “one of the very few from tropical forest environments,” says Alan Stewart, an ecologist at the University of Sussex in England. “It brings these massive clouds of bugs to circle, circle, circle and die.” “You basically bring the moon down to earth from the perspective of an insect,” she says.

Deichmann says she’s seen the impact when forests are lit up for the first time. While past research has found insects favor white light over amber light, Deichmann’s paper is the first to demonstrate the impact of different light hues in a tropical rainforest, specifically in settings that have never been illuminated. It has been previously shown that the color of “artificial light at night,” or ALAN, can reduce insect casualties.

The team also found disease-carrying insects were disproportionately attracted to white LED light, which could mean avoiding white light around a workspace or a home, whether in the Amazon or the mid-Atlantic, could be beneficial to human health.

Study author Jessica Deichmann, a conservation biologist at the Smithsonian’s National Zoo and Conservation Biology Institute (SCBI) and her colleagues found putting an amber-colored filter over an LED bulb substantially reduced the amount and variety of insects drawn to the glow. But something as simple as changing a light’s hue may reduce the attraction for many types of insects, thus preventing insect harm and death, according to a new study published last month in the journal Insect Conservation and Diversity. Indeed, many studies have indicated that human-caused light pollution is contributing to the devastation of millions of insects. Like a moth to a flame, all kinds of insects are drawn to glowing light at night-but this obsession often drives bugs to exhaustion and death.

Light bugz commercial