Caulleryella

Caulleryella
Scientific classification
Domain:
Eukaryota
(unranked):
Sar
(unranked):
Alveolata
Phylum:
Apicomplexa
Class:
Conoidasida
Subclass:
Gregarinasina
Order:
Neogregarinorida
Suborder:
Schizogregarinina
Family:
Caulleryellidae
Genus:
Caulleryella

Keilin, 1914
Species

Caulleryella annulatae
Caulleryella anophelis
Caulleryella aphiochaetae
Caulleryella maligna
Caulleryella pipientis

Caulleryella is a genus of parasitic alveolates of the phylum Apicomplexa. Species in this genus infect insects (Diptera).

Taxonomy

This genus was created by David Keilin in 1914.[1][2] The genus was named after Professor Maurice Caullery at the Laboratoire d’Evolution des Etres Organises in Paris.

There are five species currently recognised in this genus.

The type species is Caulleryella aphiochaetae.

Description

The species in this genus are spread by the orofaecal route. They infect the epithelium of the gut.

The sporozoites are elongate and attach to intestinal epithelium.

The trophozoites are flask shaped and have the neck embedded in the host cell.

During merogony the cell becomes spheroidal with peripheral nuclei.

Cytokinesis occurs to yield a bouquet of merozoites attached at one end to a residuum.

The gamonts are spheroidal. They pair and fuse

A common wall forms around the juxtaposed gamonts forming a gametocyst within which the two gamonts are termed gametocytes.

Each pair of gamocytes give rise to 16 isogametes. These in their turn pair and fuse to form 8 zygotes.

The zygotes also undergo cytokinesis by a progression of cleavage furrows from one end.

This leads to the formation of 8 sporozoites attached to a single polar residuum.

These may infect other cells within the gut or form a cyst which is released from the gut.

References

  1. ↑ Keilin, D., 1914: Une nouvelle Schizogregarine, Caulleryella aphiochoetae n. g. n. sp., parasite intestinal d'une larve d'un Diptere cyclorhaphe (Aphiochoeta rufipes Meig.). Compte Rendu de la Societe de Biologie Paris 76: 768-771
  2. ↑ Annales de parasitologie humaine et comparée. Encyclopédie des sciences médico-biologiques. Section--Parasitologie (in French). Masson. 1965. p. 709. Retrieved 24 June 2019. David Keilin, éminent biochimiste, membre de la Royal Society, qui découvrit en ... des Grégarines (Dendrorhynchus, Caulleryella, Allantocystis, Schizocystis, Lipotropha) ou des Ciliés (Lambornella).


This article is issued from Offline. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.