Eggs of Leucochloridium paradoxum present in bird droppings hatch and penetrate through the skin of a succineid snail (Succinea spp.,...

Sacculina carcini parsitizes crabs, mostly the green crab Carcinus maenas (1). It is most commonly found in Europe, but has also been...

Diplozoon paradoxum is a flatworm parasite of fish. Eggs hatch and pass through larval stages where they swim to try to find a fish host....

Ophiocordyceps sinensis, or caterpillar fungus, is a parasitic fungus that infects caterpillars of ghost moths. Permissive hosts include...

Phrixocephalus cincinnatus begin their life as free-swimming larvae (called a nauplii) (1). After developing to their next larval stage...

Cotesia congregata is a parasitoid wasp found throughout North America and South America (1). The wasps parasitize caterpillars of sphinx...

Myrmeconema neotropicum is a nematode parasite that infects ants. The eggs can also use birds for transportation (a paratenic host). Eggs...

Ixodes scapularis, the deer tick or black-legged tick, must feed on blood at each stage of its development. Consequently, it has a...

Haemonchus contortus females look like a barber’s pole because their white ovaries spiral around their intestine and they consume so much...

by Dr. Matthew G. Bolek, Oklahoma State University Matthew G. Bolek, Associate Professor Department of Integrative Biology, Oklahoma...