The behavior, known as kleptoparasitism, marks one of the few well-documented examples of a cetacean stealing food

Copiatestes thyrsitae is fluke that lives on the gills of fish, and while there's nothing out of the ordinary here as far as parasites go, ...

A few months ago, I wrote about a snail that forms galls in the spines of sea urchins , and while most people might not think of snails as p...

A passing glance at the parasite in today's post might lead you to think that it is a worm, perhaps a nematode. But a closer look would reve...

Floating amidst the ocean's plankton is a tiny monster, it has no mouth and it must mate, after which it will give birth to a new generation...

Student guest post time! One of the assessments that I set for students in my ZOOL329 Evolutionary Parasitology class is for them to write a...

Horsehair worms are a menace to crickets (as well as mantis , millipedes , and centipedes ) everywhere. Imagine being a cricket going about ...

It's a bug-eat-bug world out there and the same applies to parasitic wasps - even parasites can themselves become parasitised - which is wh...

Nematodes (roundworms) just can't get enough of being parasites. Parasitism has independently evolved at least fifteen times among nematode...

YouTube video by MalibuDivers

When it comes to parasites, for most people it is a case of "out of sight, out of mind", and that especially applies to holoparasitic plants...

Do you like eating fish? Well so do some leeches. Most people only know about the leeches that feed on humans, but there are also numerous o...

Tardigrades (also known as "water bears") have built up a reputation for being pretty much invulnerable  (even though Bdelloid rotifers does...