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https://news.ufl.edu/archive/2012/02/color-is-key-in-controlling-flies-uf-researchers-find.html
A key to making the device effective was the discovery that flies are three times more attracted to the color blue than to yellow and that yellow actually seemed to repel flies.
Well TIL, maybe it's the color?
My original guess was that red watermelons are more common and so flies have evolved to crave it. You could also try with other fruits and report back ๐
I have wonder if this is applicable to mosquitos as well. If so, time to buy some yellow clothing.
Does anyone sell yellow floodlights?
High pressure sodium bulbs put out orange yellow light that has a low CRI, so anything they illuminate looks orangey yellow
I've read that red variants of veggies like cabbage get less attacked by caterpillars, and anecdotally, it seems to be true. It makes sense that insects would be evolved to target the more "natural" color.
I had not ever seen a yellow watermelon until this summer. I didn't even know they existed.