Photography And Half-Thoughts By Mitchell Hegman

...because some of it is pretty and some of it is not.

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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