Ovivora

Ovivora
Scientific classification
(unranked): Diaphoretickes
Kingdom: Chromista
Subkingdom: Harosa
Infrakingdom: Alveolata
Phylum: Apicomplexa
Class: Conoidasida
Subclass: Coccidia
Order: Eucoccidiorida
Suborder: Eimeriorina
Family: Aggregatidae
Genus: Ovivora
Mackinnon and Ray, 1937
Species:
O. thalassemae
Binomial name
Ovivora thalassemae
(Lankester)

Ovivora is a genus in the phylum Apicomplexa.

History

This genus was created by Mackinnon and Ray in 1937.[1]

This species was earlier described by Lankester and named Monocystis thalassemae.

Taxonomy

There is one species recognised in this genus.

Description

This species infects the eggs of the echiuroid worm (Thalassema neptuni). This occurs while the eggs are within the genital pouches (nephridial sacs).

Schizogony and sporogony both occur within the eggs.

The mature sexual parasites are vermiform and immobile. The males are smaller than the females. The microgametocyte, when it becomes spherical, gives rise to numerous, elongate microgametes. These are similar to those of Aggregata.

The oocysts have many sporocysts, each with up to 12 sporozoites.

The number of chromosomes appears to be seven.

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References
  1. McKinnon DL, Ray HN (1937) A coccidian from the eggs of Thalassema neptuni Gaertner. Parasitology 29: 457-468


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