Siedleckia

Siedleckia are a genus of parasitic alveolates in the phylum Apicomplexa. Species in this genus infect marine invertebrates.

Siedleckia
Scientific classification
Domain:
Eukaryota
(unranked):
Sar
(unranked):
Alveolata
Phylum:
Apicomplexa
Class:
Conoidasida
Subclass:
Gregarinasina
Order:
Eugregarinorida
Suborder:
Blastogregarinorina
Family:
Siedleckiidae
Genus:
Siedleckia
Species

Siedleckia caulleryi
Siedleckia dogieli
Siedleckia mesnili
Siedleckia nematoides

Taxonomy

This genus was described by Caullery and Mesnil in 1898.

There are four species recognised in this genus.

The type species is Siedleckia nematoides.

The taxonomic position of this genus is unclear and it may be related to the gregarines or to the coccidians.[1]

Description

The gamonts are elongated and flattened. They possess a smooth surface lacking any grooves or folds.

The pellicle appears to be trilaminar and longitudinal microtubules lie deep to it. The parasite attaches to the host cell via mucron.

Feeding mode is apparently by myzocytosis.

Life cycle

The parasite infects the gastrointestinal tract and is presumably transmitted by the orofaecal route but the details of this mechanism are presently unknown.

Species in this genus infect the polychete worm Scoloplos armiger.

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References
  1. Diakin A, Simdyanov TG, Paskerova G, Alesohin VV, Entzeroth R, Schrevel J, Valigurova A (2012) Phylogenetic study on early emerging apicomplexans with emphasis on genera Eleutheroschizon and Siedleckia. In: X. české a slovenské parazitologické dny. ISBN 978-80-210-5862-0


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