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Why flying insects gather at artificial light

nature.com

141–150 of 183 posts

Re: Why flying insects gather at artificial light

#141
post #115

Earlier quoted context omitted.

Interesting, I heard a story once that you can catch bats with keys: Put a bunch of keys in a sock and throw that in the air. If there is a bat near enough it might dive for and grab the object, then it gets drawn to the ground because the keys are too heavy. There you can catch it if you are quick. Might be an urban myth, though it seems like it might just work.

Seems like a great way to get rabies.

Or a new strain of COVID...

Re: Why flying insects gather at artificial light

#142
post #38

It’s always amusing in the garden center at Home Depot looking at the enormous spider webs (and the fat spiders) around their sodium vapor lamps. It must be that the number of calories required to produce bioluminescence to create this effect must be greater than the calories that could be derived from hunting that way. But if someone else provided that free energy for hunting…

Interesting. I sometimes wonder how they end up near the lights: there wouldn't seem to be a light source at night for most of their evolution. Maybe they used the moon in the background. But is it correct to assume that, if something is naturally possible (e.g., bioluminescence), and provides significant evolutionary advantage, the species will evolve it? If so, why are we the only intelligent ones (so far)? Why did…

My guess is that spiders build webs in many places, but only the successful ones remain. In other words, survivor bias.

Re: Why flying insects gather at artificial light

#143
post #125

Earlier quoted context omitted.

Well you have no sources and you can be full of it. But following the scientific method, I’ll try your hypothesis next chance I have! :D

If this turns out to not be true, and just said for the amusement of thinking of all the people jiggling their keys at insects, it reminds me of something a friend in high-school said to me: "If you peel a banana, take a bite off the top, and then poke your index finger in to the middle of it, it will split in to perfect thirds". Upon trying this, I discovered it was not true, and my friend just wanted to see me stic…

"If you hand is larger than your face . . . "

Re: Why flying insects gather at artificial light

#144
post #125

Earlier quoted context omitted.

Well you have no sources and you can be full of it. But following the scientific method, I’ll try your hypothesis next chance I have! :D

If this turns out to not be true, and just said for the amusement of thinking of all the people jiggling their keys at insects, it reminds me of something a friend in high-school said to me: "If you peel a banana, take a bite off the top, and then poke your index finger in to the middle of it, it will split in to perfect thirds". Upon trying this, I discovered it was not true, and my friend just wanted to see me stic…

Actually, I do this when making a banana split. Cut a piece off the top and then slowly press the banana into thirds. Then, lower the banana, with the bottom part of the banana still intact, into a tall glass. Smoother with cream, ice cream and/or syrup. Makes for a solid banana split.

Re: Why flying insects gather at artificial light

#145

A theory I have is that some may use it as Schelling point [1] to coordinate. For reproduction but maybe other things too. Similar how the environment conditions after a rain can be the catalyst for ants nuptial flight [2]. [1] https://en.wikipedia.org/wiki/Focal_point_(game_theory) [2] https://en.wikipedia.org/wiki/Nuptial_flight

What would the shelling point be before the advent of artificial light though? Can't be the moon. Or do you think it evolved on the human time scale?

Re: Why flying insects gather at artificial light

#146

So one could optimize an outdoor light location design to reduce insects? Like for example an outdoor dining terrace?

Maybe some sort of directional lighting funnel that attracts insects on one side and the guides them out in a direction away from humans?

Re: Why flying insects gather at artificial light

#150

Earlier quoted context omitted.

or superpowers

Wrong, Batman had no superpowers. He was just good at martial arts, and had access to some nice equipment (because he was a billionaire).

So the costume was basically just a kink?
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