Lipocystis
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Lipocystis
Grell 1938
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Lipocystis polyspora |
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Lipocystis is a genus of parasitic protozoa of the phylum Apicomplexa.
Species in this genus infect insects.
Taxonomy
This genus was created by Grell in 1938.[1] Grell observed the parasite during his work for his PhD thesis.
The only recognised species in this genus is Lipocystis polyspora.
Description
The life cycle of this parasite occurs within the fat body of the host. Transmission is via the oro-faecal route.
The infective sporozoites are fusiform. Once ingested the sporozoites invade the wall of the gut en route to the fat body.
After invasion the sporozoites enlarge into rounded micronuclear meronts (nuclear diameter = 1 micron).
This first round of merogony produces merozoites with small nuclei which their turn become meronts.
The second generation meronts produce two types of merozoites either with large nuclei which again give rise to merozoites or spheroidal gamonts.
The gamonts enlarge and pair in syzygy.
This paring in its turn leads to the formation of multimucleate gametocytes.
These gametocytes form gametes which are released and fuse.
After gamete fusion a zygote results.
Within each zygote up to 200 navicular (boat like) oocysts may form.
Each oocyst contains 8 sporozoites.
Host records
This species infects the scorpion fly (Panorpa communis).
References
- ↑ Grell K G (1938) Untersuchungen an Schizogregarinen. I. Lipocystis polyspora n. g. m. sp., eine neue Schizogregarine aus dem Fettkörper von Panorpa communis L. Arch Protistenk 91:526-545
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