Male glow-worms are taking longer to find their mates because humans can't turn the lights off.
In addition to making it much harder to find a female, the white light caused the male glow-worms to. In total darkness, it took the insects roughly 48 seconds to reach the fake female. It took those same glow-worms about 60 seconds to find the LED at the lowest levels of white light.
Illuminating the maze also caused the males to spend more time towards the bottom of the maze without moving towards the green light. In the dark, the glow-worms only spent roughly 32 seconds in the bottom of the Y, while they spent approximately 81 seconds in the bottom of the maze in the brightest conditions.
The glow-worms shaded their eyes for approximately 25 percent of the trial when the white light lit up the area with the fake female LED. They did this roughly 0.5 percent of the time when the maze was dark. “Keeping their eyes beneath their head shield shows male glow-worms trying to avoid exposure to the white light which suggests that they strongly dislike it,” study co-author and zoologist Jeremy Niven
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