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Related to miracidia: cercariae


[mir′əsid′ē·əm] pl. miracidia
Etymology: Gk, meirakidion, youthfulness
the ciliated larva of a parasitic trematode that hatches from an egg and can survive only by penetrating and further developing within a host snail into a maternal sporocyte that produces more larvae.


(mi?ra-sid'e-um) plural.miracidia [Gr. meirakidion, lad]
The ciliated free-swimming larva of a digenetic fluke. On emerging from an ovum, it penetrates a snail of a particular species and metamorphoses into a sporocyst.
See: fluke

Miracidium (plural, miracidia)

The free-swimming larval form in the life cycle of the liver fluke.
Mentioned in: Fluke Infections
References in periodicals archive ?
The notion is that they will both equal unity if cercaria and miracidia are uniformly distributed in the surface water system, but both can be larger or smaller than unity.
Dronen (1978) provided estimates of the efficiencies of Haematoloechus coloradensis (one of the species encountered in this study) over a two year period and found low efficiencies at all levels of the life cycle: eggs producing miracidia which successfully infected snails (0.
In the digestive tract of the snail, the eggs hatch and become miracidia that go through several developmental stages and multiply asexually into thousands of tailed, tree-swimming cercariae.
Resistance could be confirmed through infection and treatment of rodents with isolates from uncured patients or by a simple test measuring the response of miracidia to praziquantel (7).
We performed molecular analysis of schistosomal miracidia DNA.
natalensis was exposed to miracidia from eggs of Fasciola gigantica that were obtained from the slaughterhouse in Cotonou.
In addition, the ovicidal action of PZQ caused inviability of eggs by retraction of miracidia, mostly of mature eggs.
The life cycle is complete when the eggs hatch, releasing miracidia that infect specific freshwater snails (Biomphalaria species).
Extracts of Zingiber officinale (ginger) rhizome showed activity against Schistosoma mansoni miracidia and cercariae [1].