| Spirocystis | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Chromalveolata |
| Superphylum: | Alveolata |
| Phylum: | Apicomplexa |
| Class: | Conoidasida |
| Subclass: | Coccidiasina |
| Order: | Eucoccidiorida |
| Suborder: | Eimeriorina |
| Family: | Spirocystidae |
| Genus: | Spirocystis |
| Species | |
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Spirocystis nidula |
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Spirocystis is a genus of parasitic protozoa in the phylum Apicompexa. The genus was described in 1911 by Léger and Duboscq.[1]
The family Spirocystidae was created in 1915 by Leger & Duboscq in 1915 for this genus.[1]
Species in this genus infect the blackworm (Lumbriculus variegatus). The asexual forms, cresentic or spiral shaped, may be found in virtually any tissue of the host.
The multinucleate vermicular meronts are ~35 microns in length and occur in the coelomic cavity and various tissues of the host.
The microgametocytes and macrogametes form in the intestinal epithelium. The microgametes are non-flagellated.
The zygote produces a thick walled oocysts ~35 microns in diameter.
The sporoblasts give rise to a single naked sporozoite with a length of up to 40 microns.
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