Wednesday, November 10, 2021

The Creepiest Parasite

Parasites are creepy in principle.

Consider, for example, tapeworms.  There are six types of tapeworms that can attach to a human host.  Some are capable of living for decades within the intestines of their host.  And they can grow quite long.  A man from India, after complaining about months of abdominal pain, had an 82-foot-long tapeworm removed from his gut.

But I think I found the creepiest parasite of all.  It’s an isopod (a type of crustacean) called a tongue-eating louse.  The tongue-eating louse lives in the mouth of a host fish and can grow to over an inch in length.  Eventually, it detaches the tongue of the fish and will use itself as a replacement.

The louse the survives in the fish’s mouth by feeding on the host’s mucus.  The tongue-eating louse does not kill the fish.  This is the only known example of a parasite replacing an organ of its host. 

I have posted a short and more interesting than creepy video about the tongue-eating louse.


A Tongue-Eating Louse in the Mouth of a Fish



Mitchell Hegman

Sources: David Moye (huffpost.com), wbmd.com, healthfacts.blog

Video Link:  https://www.youtube.com/watch?v=327-bwMQI-Y

Photo: australian.museum

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