sporocyst

sporocyst

 [spor´o-sist]

1. any cyst or sac containing spores or reproductive cells; the oocyst of certain protozoa in which sporozoites develop.

2. the larval stages of flukes in snails.

spo·ro·cyst

(spō'rō-sist),

1. A larval form of digenetic trematode (fluke) that develops in the body of its molluscan intermediate host, usually a snail; the sporocyst forms a simple saclike structure with germinal cells that bud off internally and develop into other larval types that continue this process of larval multiplication (considered to be a form of polyembryony).
See also: miracidium, redia, cercaria.

2. A secondary cyst that develops within the oocyst of Coccidia, a group of sporozoans that includes many of the most important disease agents of domestic animals and fowl; the sporocyst develops from a sporoblast and produces within itself one or several sporozoites, the infective agents for infection and multiplication in the next host.

[sporo- + G. kystis, bladder]

sporocyst

/spo·ro·cyst/ (-sist)

1. any cyst or sac containing spores or reproductive cells.

2. a germinal saclike stage in the life cycle of digenetic trematodes, produced by metamorphosis of a miracidium and giving rise to rediae.

3. a stage in the life cycle of certain coccidian protozoa, contained within the oocyst, produced by a sporoblast, and giving rise to sporozoites.

sporocyst

(spôr′ə-sĭst′)

n.

1. A resting cell that produces asexual plant spores.

2. A protective structure containing the infective sporozoites of an apicomplexan parasite.

3. A saclike larval stage in many trematodes, from which the rediae emerge.

sporocyst

[spôr′əsist]

Etymology: Gk, sporos + kystis, bag

1 any structure containing spores or reproductive cells.

2 a saclike structure, or oocyst, secreted by the zygote of certain protists before sporozoite formation.

3 the second larval stage in the life cycle of parasitic flukes. The saclike organism develops from the miracidium, or first larval stage, in the body of a freshwater snail host and contains germinal cells that give rise either to daughter sporocysts that develop into cercariae or to rediae. See also fluke.

spo·ro·cyst

(spōr'ō-sist)

1. A larval form of digenetic trematode (fluke) that develops in the body of its molluscan intermediate host, usually a snail.
See also: cercaria

2. A secondary cyst that develops within the oocyst of Coccidia, a group of sporozoans that includes many of the most important disease agents of domestic animals and fowl.

[sporo- + G. kystis, bladder]

sporocyst

a cyst producing asexual spores.

sporocyst

1. any cyst or sac containing spores or reproductive cells; contained in the oocyst of coccidia in which sporozoites develop.

2. the larval stages of flukes in snails.