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Gigaductus
Scientific classification
Domain:	Eukaryota
(unranked):	Sar
(unranked):	Alveolata
Phylum:	Apicomplexa
Class:	Conoidasida
Subclass:	Gregarinasina
Order:	Neogregarinorida
Family:	Gigaductidae
Genus:	Gigaductus
Species
	Gigaductus aficanus; Gigaductus agoni; Gigaductus americanus; Gigaductus anchi; Gigaductus brachyni; Gigaductus elongatus; Gigaductus exiguus; Gigaductus macrospora; Gigaductus parvus; Gigaductus steropi; Gigaductus vellardi

Gigaductus is a genus of parasites in the phylum Apicomplexa.

Species in this genus infect Coleoptera (beetles) and Orthoptera (grasshoppers).

History

The first species of this genus was described by Crawley in 1903.^[1] These species were then moved to Gregarina in 1916 by Watson. Moriggi created the genus Endocryptella for them. Fillipponi created the family Gigaductidae and the genus Gigaductus for them in 1948.^[2]

Taxonomy

There are eleven species currently recognised in this genus.

The type species is Gigaductus anchi.

Lifecycle

The species in this family are spread by the oral-faecal route.

Development occurs in the epithelial cells of the gut or rarely in the Malpighian tubules.

The gamontocysts are enclosed in a thick gelatinous capsule.

Syzygy and encystment occur in the lumen of the gut (or tubule).

About 25-30 spores are generated from each gametocyst.

References

^ Crawley (1903) Proc Acad Nat Sci Philad, 55: 633
^ Filipponi A (1948) Gigaductus macrospora n. sp. revisione del genere Gigaductus. Insitutzione della nuova famiglia Gigaductidae (Gregarinida). Archivio Zoologico Italiano 33:293–331

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[Crawley1903-1] Crawley (1903) Proc Acad Nat Sci Philad, 55: 633

[Filipponi1948-2] Filipponi A (1948) Gigaductus macrospora n. sp. revisione del genere Gigaductus. Insitutzione della nuova famiglia Gigaductidae (Gregarinida). Archivio Zoologico Italiano 33:293–331

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