''Hyaloklossia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of parasitic alveolates in the

phylum In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature f ...

Apicomplexa The Apicomplexa (also called Apicomplexia) are a large phylum of parasitic alveolates. Most of them possess a unique form of organelle that comprises a type of non-photosynthetic plastid called an apicoplast, and an apical complex structure. T ...

. Only one species in this genus is currently recognised - ''Hyaloklossia lieberkuehni''.

History

This parasites of this genus was first observed by Lieberkuhn in 1854 within the renal cortex of a frog of the genus ''

Rana Rana may refer to: Astronomy * Rana (crater), a crater on Mars * Delta Eridani or Rana, a star People, groups and titles * Rana (name), a given name and surname (including a list of people and characters with the name) * Rana (title), a histori ...

''. Labbe in 1894 initially named this species ''Klossia lieberkuehni''. Labbe in 1896 moved this species to a new genus ''Hyaloklossia''. Laveran and Mesnil in 1902 and Minchin in 1903 moved this species into the genus ''

Diplospora ''Diplospora'' is a genus of flowering plants in the family Rubiaceae. The genus is found in tropical and subtropical Asia. Species *'' Diplospora bilocularis'' ( Kurz) M.Gangop. & Chakrab. - Burma *'' Diplospora cuspidata'' Valeton - Sarawak ...

'' Labbe 1893. It was moved again into the genus ''

Isospora ''Isospora'' is a genus of internal parasites in the subclass Coccidia. It is responsible for the condition isosporiasis, which causes acute, non-bloody diarrhoea in immunocompromised individuals. Taxonomy At least 248 species were originally ...

'' by Noller in 1923. The species was replaced in the genus ''Hyaloklossia'' by Modry ''et al.'' in 2001.

Description

There are two sporocysts within the ocysts. The oocysts have a thin, elastic, relatively fragile wall. The sporocysts are tetrazoic. The sporocyst wall is composed of plates joined by sutures and Stieda and substieda bodies are absent. The life cycle is homoxenous. Endogenous development is extraintestinal (renal). Sporulation of oocysts is endogenous.

Life cycle

The sporocysts are released from the renal epithelial cells and are passed with the urine into the water. It is presumed that they are subsequently ingested, decyst within the gut, invade the gut wall and migrate to the renal cortex. The parasites grow with the renal epithelial cells and give rise to male and female gamonts which are released into the lumen of the tubule where they meet and fuse forming an oocyte. The oocyte subsequently develops into an oocyst which in turn divides into two sporocysts.

Host record

The only known host of this species is the European green frog (''

Rana esculenta The edible frog (''Pelophylax'' kl. ''esculentus'') is a species of common European frog, also known as the common water frog or green frog (however, this latter term is also used for the North American species ''Rana clamitans''). It is used ...

'').

References

{{Taxonbar, from=Q16983384 Apicomplexa genera zh:孢子蟲屬