Sentence examples for trematode from inspiring English sources

Swimmer's itch, also called cutaneous schistosomiasis, an infection of the skin marked by prickling sensations and itching, caused by invasion of the skin by larvae of trematode worms of the genus Schistosoma, often found in freshwater lakes and ponds.

In this case, as with many trematode infestations, people exposed themselves to the disease by bathing in water containing infective larvae (cercariae) released from infested snails; the cercariae enter directly through the skin.

In the life cycle of trematode flukes of the subclass Digenea, mollusks (mostly snails) serve as the intermediate host.

Most trematode eggs require oxygen in order to form the first larval stages and light in order to hatch.

Fasciolopsiasis, infection of humans and swine by the trematode Fasciolopsis buski, a parasitic worm.

In some species the trematode modifies the behaviour or appearance of the second intermediate host in ways that increase the likelihood that it will be eaten by the proper definitive host.

Despite the presence of a gut, trematodes seem able to absorb glucose and certain other materials through the metabolically active tegument covering the body surface.

The tendency to associate with other animals apparently represents a definite evolutionary trend among the platyhelminths; permanent associations essential to the survival of a species could develop from loose associations, which may then have given rise to parasitic forms, including the trematodes and cestodes.

The chief proteins in cestodes and trematodes are keratin and sclerotin.

Lungworms should not be confused with lung flukes, such as those of the genus Paragonimus, which are trematodes (phylum Platyhelminthes).

The blind-ending intestine of trematodes consists of a simple sac with an anterior or midventral mouth or a two-branched gut with an anterior mouth; an anus is usually lacking, but a few species have one or two anal pores.