Читать книгу Parasitology - Alan Gunn - Страница 88

Taxonomic revisions have split the genus Isospora into two: those that do not express a tissue cyst stage in their life cycle remain in the genus Isospora, whilst those that do have a tissue cyst stage form the genus Cystoisospora. Most of the several hundred species belonging to the genus Isospora are parasites of birds. They are all monoxenous and therefore complete their life cycle in a single host – although some may exploit paratenic hosts to effect transmission. Berto et al. (2011) provide a review of both Isospora and Eimeria that infect birds. Isospora do not appear to affect chickens and other poultry, but they can be pathogenic in finches, sparrows, and other passerine birds, as well as mynahs and starlings.