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NATURE: This Vampire Parasite Eats Tongues

tongue-eating louse
Image: © Courtesy of Kory Evans, Rice University

When scientists recently X-rayed a fish’s head, they found a gruesome stowaway: A “vampire” crustacean had devoured, then replaced, its host’s tongue.

The buglike isopod, also called a tongue biter or tongue-eating louse, keeps sucking its blood meals from a fish’s tongue until the entire structure withers away. Then the true horror begins, as the parasite assumes the organ’s place in the still-living fish’s mouth.

Biologist Kory Evans, an assistant professor in the Department of BioSciences at Rice University in Houston, Texas, discovered the tongue biter while digitizing X-rays of fish skeletons. He shared images of the surprising and horrifying find on Twitter on Aug. 10: “Mondays aren’t usually this eventful,” Evans joked in the tweet.

Full Story From Live Science

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