Eucoccidiorida

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Eucoccidiorida
"Toxoplasma gondii" tachyzoites
tachyzoites
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Alveolata
Phylum: Apicomplexa
Class: Conoidasida
Subclass: Coccidia
Order: Eucoccidiorida
Léger & Duboscq, 1910
Suborders

The Eucoccidiorida are an

Isospora belli, which results in isosporiasis
.

Definition

This is the largest order in the class Conoidasida and contains those species that all undergo

sporogony
(spore formation) during their lifecycles.

Genera

Nineteen families, three subfamilies, and 70 genera are recognised in this order. The genera include:

Toxoplasma, Tyzzeria, Wenyonella

Among the

heteroxenous and cyst
-forming genera are: Besnoitia, Cystoisospora, Frenkelia, Hammondia, Neospora, Sarcocystis, and Toxoplasma.

Taxonomy

The taxonomy of this group is complex and only partly understood. Two major clades have been identified: the isosporoid coccidia (Toxoplasma, Neospora, Isospora [in part], and Sarcocystis) and a second clade containing Lankesterella, Caryospora and the eimeriid coccidia (Cyclospora, Isospora [in part] and Eimeria).[1] Isospora is more closely related to the Toxoplasma/Neospora clade than to Sarcocystis.[2]

Families

About 1,000 species are in the genus Eimeria.

Some of the genera have been organised into families.

  • Family Barrouxiidae
    • Genera
      • Barrouxia
      • Goussia
  • Family Sarcocystidae
    • Genera
      • Besnoitia
      • Cystoisospora
      • Neospora
      • Sarcocystis
      • Toxoplasma

References

  1. S2CID 27083070
    .
  2. S2CID 25639863
    .

External links

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