this post was submitted on 30 Oct 2024
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Science Memes

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submitted 1 month ago by [email protected] to c/[email protected]
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[–] [email protected] 3 points 1 month ago

It's a bit of both. The problem is ladybugs are so localized that disruptions to their ecosystem really messes them up. In the US most ladybugs are harvested out of a ground breeding kind of ladybug that commonly has parasites they've evolved to be able to fight. But other ladybugs in the rest of the country don't have these defenses and the parasite can infect colonies when they all come together to mate and hibernate for the winter.