Cockroaches wouldn't exist without humans. We helped them become one of the world's worst pests, according to a new study.

Fuck I hate ‘em. Especially the really big roaches.

What I DON’T mind, are the guys who come into the house accidentally who would much rather be outside. They seem quite apologetic and don’t run fast, if at all. I try to scoop them up gently and put them back into the leaf litter where they belong and are much happier being, thank you… Looking at you Methana marginalis

This is the best summary I could come up with:

The German cockroach is "a creation of human-made environments," Edward Vargo, an entomology professor at Texas A&M University and co-author of a new study identifying the roach's origins, told The Washington Post.

The German roach evolved from its Asian cousin about 2,100 years ago to adapt to "human settlements in India or Myanmar," the researchers reported in their paper.

With advancements in transportation and "temperature-controlled housing," the German cockroach made its relatively recent global spread, the researchers said in their report.

The German cockroach's adaption to warm environments, ability to rapidly breed, and unique resistance to insecticides make them a frustratingly common presence in households.

The roach's westward spread likely occurred during times of increasing "commercial and military activities of the Islamic Umayyad or Abbasid Caliphates" about 1,200 years ago, the researchers reported.

"If we can know the origin of the species, we can try to identify the mechanism of this rapid evolution of insecticide resistance," Qian Tang, a research associate at Rowland Institute at Harvard who led the new study told the Post.

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