Alaria americana

Alaria americana
Scientific classification
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Trematoda
Order: Strigeidida
Family: Diplostomatidae
Genus: Alaria
Species: A. americana
Binomial name
Alaria americana
Synonyms[1]

Alaria canis

Alaria americana is a species of a trematode in a family Diplostomatidae.

Life cycle

Alaria americana is a three- host trematode that lives as adults in the intestine of the dog definitive host.[1] Eggs are passed in faeces and hatch in water, releasing miracidia which penetrate the helisomid freshwater snails (first intermediate host) and develop through the sporocyst stage into cercariae.[1] Cercariae released from snails actively penetrate the second intermediate host (tadpoles) becoming infective mesocercariae in about two weeks.[1] In the tadpole or in the frogs (following the metamorphosis), mesocercariae accumulate and may be ingested by a number of paratenic hosts (e.g., other frogs, snakes) or directly by the definitive host.[1]

Human infections

Cases of human intraocular infection with mesocercariae of Alaria americana and other Alaria mesocercariae have been recorded in patients who had ingested undercooked contaminated frog legs.[1] Both patients presented with pigmentary tracks in the retina, areas of active or healed retinitis and signs of diffuse unilateral subacute neuroretinitis.[1]

References

This article incorporates CC-BY-2.0 text from the reference[1]

  1. 1 2 3 4 5 6 7 8 Otranto, D.; Eberhard, M. L. (2011). "Zoonotic helminths affecting the human eye". Parasites & Vectors. 4: 41. doi:10.1186/1756-3305-4-41.

External links

This article is issued from Wikipedia - version of the 10/9/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.