sporocyst

(redirected from sporocysts)
Also found in: Dictionary, Encyclopedia.
Related to sporocysts: cercariae

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.
References in periodicals archive ?
The sporocyst contains 8 sporozoites and a round or granular residium body.
The primary intermediate host is castrated by the sporocyst life stage of the parasite, which asexually reproduces to form cercariae with pigment spots, ventral suckers, and tails formed of overlapping scales.
Risk factors associated with the presence of Sarcocystis neurona sporocysts in opossums.
Starting on day 6 after infection, only the goshawks shed sporocysts (7.
Within the oocyst the zygote sporulates by dividing into two sporocysts.
Thus, rediae may require more energy from their host than sporocysts that absorb nutrients through the body wall without damaging host tissues (Sousa, 1983; Vernberg and Vernberg, 1974).
Snails were considered parasitized if trematode sporocysts or redia were present in the gonads, as described by Stunkard (1983).
The mature oocyst contains two sporocysts, each with two sporozoites.