Some predatory nematodes have large buccal cavities (or mouths)
equipped with one or more teeth. Prey may be swallowed whole or their cuticle
pierced and the body contents sucked out. Other predatory nematodes are equiped with
a hollow spear which they use to pierce the cuticle and ingest the body fluids of their
prey.
The predatious nematode Odontopharynx longicaudata.
Note the large dorsal tooth in the mouth of the nematode.
Photo by J. Chitamber
Head of Aporcelaimellus obscurus showing
spear-shaped mouth parts. This nematode preys on nematodes, mites, and enchytraeid
eggs.
Drawing by G. Thorne, Photo by P. G. Mullin
Seinura sp. feeding on an unidentified nematode.
The predator has pierced the cuticle of its prey with its spear-like mouth parts
and is ingesting the internal body fluids.