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A Description of Isospora amphiboluri (Apicomplexa: Eimeriidae) from the Inland Bearded Dragon, Pogona vitticeps (Sauria: Agamidae)
Chris T. McAllister, Steve J. Upton, Elliott R. Jacobson and Wayne Kopit
The Journal of Parasitology
Vol. 81, No. 2 (Apr., 1995), pp. 281-284
Stable URL: http://www.jstor.org/stable/3283934
Page Count: 4
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Fecal samples from 50 captive inland bearded dragons, Pogona vitticeps (Ahl, 1926), bred in California, were examined for coccidian parasites. Sixteen (32%) of the lizards were found to be passing oocysts of Isospora amphiboluri Cannon, 1967, previously described from bearded dragons Pogona barbata (Cuvier, 1829) from Australia. Sporulated oocysts were spherical to subspherical, 25.3 x 25.1 (23-26 x 23-26) µm, with a shape index (length/width) of 1.0 (1.0-1.1). A micropyle, oocyst residuum, and polar granule were absent. Sporocysts were ovoidal, 17.0 x 11.4 (16-18 x 11-12) µm, with a shape index of 1.5 (1.4-1.7). A sporocyst residuum, Stieda, and substieda bodies were present, but parastieda bodies were absent. Sporozoites were elongated, 13.9 x 3.5 (12-15 x 3-4) µm in situ, containing spherical anterior and posterior refractile bodies. The occurrence of I. amphiboluri in P. vitticeps is a new host and geographic record for the parasite. Photomicrographs of the oocysts and endogenous life cycle stages of I. amphiboluri are presented for the first time.
The Journal of Parasitology © 1995 The American Society of Parasitologists