trematode: see fluke fluke, parasitic flatworm of the trematoda class, related to the tapeworm. Instead of the cilia, external sense organs, and epidermis of the free-living flatworms, adult flukes have sucking disks with which they cling to their hosts and an external cuticle that
..... Click the link for more information. ; Platyhelminthes Platyhelminthes , phylum containing about 20,000 species of soft-bodied, bilaterally symmetrical, invertebrate animals, commonly called flatworms. There are four classes: the free-living, primarily aquatic class, Turbellaria, and Trematoda, Cestoda, and Monogenea,
..... Click the link for more information. .
Any member of almost 6,000 species of parasitic flatworms. Flukes are found worldwide and range in size from about 0.2 to 4 in. (5–100 mm) long. They most commonly parasitize fish, frogs, and turtles, but also humans, domestic animals, and invertebrates such as mollusks and crustaceans. They include external parasites (ectoparasites), internal parasites (endoparasites), and semi-external parasites (those that attach to the lining of the mouth, to gills, or to the cloaca). Most flukes are flattened and leaflike or ribbonlike and have muscular suckers on the bottom surface, as well as hooks and spines, for attachment to the host. Fluke infestations may cause illness (e.g., schistosomiasis) or death in humans.
..... Click the link for more information. ; Platyhelminthes Platyhelminthes , phylum containing about 20,000 species of soft-bodied, bilaterally symmetrical, invertebrate animals, commonly called flatworms. There are four classes: the free-living, primarily aquatic class, Turbellaria, and Trematoda, Cestoda, and Monogenea,
..... Click the link for more information. .
fluke
or trematode)
Liver fluke (Fasciola hepatica)
(credit: Grant Heilman)
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