Cryptocotyle quinqueangularis

Cryptocotyle quinqueangularis (Skrjabin, 1923)

ETYMOLOGY:Crypto (hidden) + cotyle (disk) [for the small ventral sucker being incorporated, hidden within, the muscular a ring of small spines around the oral opening] and quinqueangularis for the five-sided nature of this worm.

SYNONYMS:Ciureana quinqueangularis (Skrjabin, 1923).

HISTORY: This parasite was first described by Skrjabin from specimens recovered from domestic cats in Russia.

GEOGRAPHIC DISTRIBUTION: This parasite has been reported from Russia.

LOCATION IN HOST: Small intestine.

PARASITE IDENTIFICATION: This small worm differs from the other species of Cryptocotyle in that the body is five-sided and has vitellaria extending anteriorly to the level of the intestinal bifurcation.

The eggs tend to be lop-sided, i.e., the ovals are longer on one side than the other. The dimensions are 38 µm long by 15 µm in width.

LIFE CYCLE: The typical final host are probably gulls and terns; however, the only specimens recovered have been from the cat.

CLINICAL PRESENTATION AND PATHOGENESIS: Thought to be asymptomatic.

TREATMENT: Probably praziquantel, but not reported.

EPIZOOTIOLOGY: Cats probably become infected by eating raw fish.

HAZARD TO OTHER ANIMALS: None known.

HAZARD TO HUMANS: Humans could possibly be infected if they ingested the presumed fish intermediate host.

CONTROL/PREVENTION: Probably the prevention of the ingestion of raw fish.

REFERENCES:

Skrjabin KI. 1923. Studies on the parasitic worms of carnivores II-IV.. Trudy Gos Inst Exsp Vet 1:67-71.

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