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Observations on Lankesterella hylae

1966; Wiley; Volume: 13; Issue: 1 Linguagem: Inglês

10.1111/j.1550-7408.1966.tb01870.x

2375-0804

W.E. Stehbens,

Parasite Biology and Host Interactions

SYNOPSIS. Sporozoites of Lankesterella hylae were found in 12 of 13 green tree frogs ( Hyla caerulea ) from Gin Gin, Queensland. The intraerythrocytic sporozoites had two pale‐staining vacuoles at the poles of the nucleus and frequently a dome‐like protuberance on the concavity of the crescentic protozoon. Motility was observed in free but not intracellular sporozoites in fresh blood. Locomotion was of a gliding nature, though in addition parasites flexed and extended, and a peristaltic constriction passed backwards along the body of two. One parasite entered and emerged from a red cell, the erythrocyte playing a passive role. All stages of sporogony were observed in liver smears from a debilitated frog. In araldite sections of the small intestine of another frog, parasites were found in the vacuoles within unidentified cells in the lamina propria, thus suggesting that the parasite's point of entry is possibly the alimentary tract.