Ascaridida

From Freepedia

The order Ascardidida includes several families of parasitic roundworms with three "lips" on the anterior end.

Important families include:

• Ascarididae, which includes the giant intestinal roundworm and related species
• Toxocaridae, which includes parasites of canids, felids, and raccoons, but which can unsuccessfully parasitize humans and cause visceral larval migrans.
• Anisakidae, also calle the marine mammal Ascarids. The larvae of these worms cause anasakiasis when ingested by humans, but do not reproduce exept in marine mammals.