Cysticercoid


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Cysticercoid

 

a larval stage of tapeworms. The body is divided into truncal and caudal segments. The head, which bears suckers, is retracted within the truncal segment; the tail has three pairs of hooks. The cysticercoid is parasitic in the body cavity of its intermediate host, which may be an annelid worm, crustacean, insect, mollusk, or vertebrate animal. After being ingested by its definitive host, a vertebrate animal, it casts off the caudal segment and becomes an adult tapeworm.

The cysticercoid is a characteristic stage of the dog tapeworm (Dipylidium caninum), which as an adult is parasitic in the intestines of dogs and cats.

References in periodicals archive ?
After the horse eats the oribatid mite containing the infective cysticercoid (larva), the larva develops into an adult in the horse's small intestine in 6 to 10 weeks.
The lifecycle of the cestode requires 2 hosts; nonhuman primates are generally the final host, while oribatid mites are the intermediate host, in which the infective cysticercoid of the cestode develops.
Cysticercoid Tapeworm larva in which the scolex is invaginated into a cystic cavity.