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Why 'ant hitchhiking' may be a bigger deal than previously thought

Scientists have long known invasive insects hitch rides on agricultural vehicles, a behavior that allows them to spread even further. Now, a new analysis suggests ants may do the same with everyday vehicles, too.

Published in Ecological Entomology, the study relied on a citizen science project in Taiwan. First, researchers combed Facebook for reports of ant infestations in private cars between 2017 and 2022, then they assembled a team of volunteer spotters who used Facebook to report sightings in private vehicles and on scooters.

The study revealed 52 cases of "active ant hitchhiking," the researchers wrote, with ants making their way into cars' interiors and even engines. Researchers counted nine species overall, seven of which were invasive. Reports grew during warmer months and dropped off during colder months. Cars parked near trees were particularly likely to attract ants, the researchers found, probably due to ants' ability to climb onto the cars using hanging tree branches and leaves.

https://www.washingtonpost.com/science/2024/07/07/ants-hitchhiking-invasive-insects/

 

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