Redia

(redirected from Redi, F.)
Also found in: Dictionary, Medical.

redia

[′rē·dē·ə]
(invertebrate zoology)
A larva produced within the miracidial sporocyst of certain digenetic trematodes which may give rise to daughter rediae or to cercariae.

Redia

 

one of the parthenogenetic generations of the digenetic flukes, or trematodes, which parasitizes an intermediate host (mollusks). The redia develops in the body cavity of the worm’s first parthenogenetic generation, the sporocyst. It in turn produces the cercaria, the larvae of the sexually mature flukes. Unlike the sporocyst, the redia has a mouth opening, a pharynx, an intestine, and a birth pore.