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A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) in Ruppell’s agama Agama rueppelli (Vaillant) (Sauria: Agamidae) from East Africa, with a review of this genus in agamid lizards

Abstract

Coprological examinations of eight Ruppell’s agamas Agama rueppelli (Vaillant) revealed the presence of a coccidium of the genus Isospora Schneider, 1881 that represents a previously undescribed species. Oöcysts of Isospora farahi n. sp. are spherical or subspherical, 29.1 (26–31) × 28.8 (26–31) μm, with a shape-index of 1.01 (1–1.07). An oöcyst residuum, polar granules and micropyle are absent. The oöcyst wall is bilayered, brownish and smooth, c. 1.5–2 μm thick. The sporocysts are oval, 16.6 (15–18) × 11.4 (11–12) μm, with a shape-index of 1.46 (1.25–1.64) and both Stieda and substieda bodies. A sporocyst residuum is present as medium-sized granules scattered irregularly among the sporozoites. The sporozoites are vermiform, with a large posterior spherical refractile body. Endogenous development is intranuclear in the epithelial cells of the small intestine. Sporulation is unknown, as oöcysts were recovered from the faeces.

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Acknowledgements

Research on the diversity of parasites of East African vertebrates was facilitated by Biota East Africa, and we are deeply indebted to Jörn Koehler for generous help. We also thank: Richard Bagine (Kenyan Wildlife Service) for assistance and issuing necessary permits; and Damaris Rotich (National Museums of Kenya) for help with the organisation of the trip and kindly providing necessary laboratory space in Nairobi. This study was, in part, supported by the grant No. 524/03/D104 of the Grant Agency of the Czech Republic and by research project Z60220518 of the BC ASCR.

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Correspondence to Andrei Daniel Mihalca.

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Mihalca, A.D., Jirků, M., Malonza, P.K. et al. A new species of Isospora Schneider, 1881 (Apicomplexa: Eimeriidae) in Ruppell’s agama Agama rueppelli (Vaillant) (Sauria: Agamidae) from East Africa, with a review of this genus in agamid lizards. Syst Parasitol 74, 219–223 (2009). https://doi.org/10.1007/s11230-009-9209-3

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Keywords

  • Polar Granule
  • Endogenous Development
  • Stieda Body
  • Agamid Lizard
  • Endogenous Stage