redia


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Related to redia: Metacercariae, cercariae

redia

 [re´de-ah] (L.)
a larval stage of certain trematode parasites, which develops in the body of a snail host and gives rise to daughter rediae, or to the cercariae.

re·di·a

, pl.

re·di·ae

(rē'dē-ă, -dē-ē),
Intramolluscan development stage of a digenetic trematode, following the primary sporocyst stage, which forms after penetration of the snail tissues by the miracidium. Rediae are produced from cells within the sporocyst, are liberated from the latter, and develop in the tissues of the host snail as elongated, saclike, muscular organisms with a mouth and gut. The rediae may produce one or a number of additional generations in the snail, but they ultimately produce the final development stage, the cercaria.
See also: sporocyst (1), miracidium.
[F. Redi, Italian physician, 1626-1697]

redia

/re·dia/ (re´de-ah) pl. re´diae   a larval stage of certain trematode parasites, which develops in the body of a snail host and gives rise to daughter rediae, or to the cercariae.

redia

(rē′dē-ə)
n. pl. re·diae (-dē-ē′)
A larva of certain trematodes that is produced within the sporocyst and that can give rise to additional rediae or to cercariae.

redia

[rē′dē·ə]
an elongated second or third larval stage of a trematode that develops in a sporocyst and matures into numerous cercariae.

redia

a larval stage of liver fluke which develops from the sporocyst larva. It possesses a mouth, suctional pharynx and simple gut, and gives rise to secondary rediae or to carcaria larvae.

Redi,

F., Italian physician, 1626-1697.
redia - intramolluscan development stage of a digenetic trematode.

redia

pl. rediae [L.] a larval stage of certain trematode parasites, which develops in the body of a snail host and gives rise to daughter rediae, or to the cercariae.
References in periodicals archive ?
The life cycle of Haplorchis pumilio was studied from redia to adult both under natural and experimental conditions.
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Cercaria Free-swimming larva of a trematode that escapes from a sporocyst or redia generation in the intermediate host (mollusk).
The cercarial tail is shed within the redia, and the noncaudate cercaria is considered a metacercaria that does not encyst (K[oslahs]ie, 1973).
Lebour (1910) observed cercariae with and without tails within the same redia (and the tails were easily detached).
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