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Morphological and molecular characterization of Eimeria haematodi, coccidian parasite (Apicomplexa: Eimeriidae) in a rainbow lorikeet (Trichoglossus haematodus)

Yang, R.ORCID: 0000-0003-2563-2015, Brice, B. and Ryan, U.ORCID: 0000-0003-2710-9324 (2015) Morphological and molecular characterization of Eimeria haematodi, coccidian parasite (Apicomplexa: Eimeriidae) in a rainbow lorikeet (Trichoglossus haematodus). Experimental Parasitology, 153 . pp. 123-128.

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Link to Published Version: http://dx.doi.org/10.1016/j.exppara.2015.03.005
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Abstract

Eimeria haematodi was first described in 1977 from the rainbow lorikeet (Trichoglossus haematodus) in Papua New Guinea. In the present study, we re-describe this coccidian species morphologically and molecularly from a rainbow lorikeet bird in Western Australia (WA). The oocysts were ovoid to slightly piriform and measured 28.5-37.8 by 25.8-33.0 μm (33.3 by 28.1 μm). Oocyst wall was approximately 1.5 μm thick and bilayered. Micropyle (5-7 μm) and oocyst residuum (8.0-10.0 μm) present; polar granule was absent. Sporocysts ellipsoidal, 11.8-13.6 by 8.0-9.6 μm (12.2 by 8.3 μm), with thin convex Stieda body and granular sporocyst residuum (4.0-5.0 μm). Molecular characterization of E. haematodi was conducted at 18S ribosomal RNA and the mitochondrial cytochrome oxidase gene (COI) loci. At the 18S ribosomal RNA locus, E. haematodi shared 98.1% genetic similarity to E. alabamensis from cattle in New South Wales, Australia. At COI locus, E. haematodi was closest (92.3% similarity) to E. praecox from domestic chickens (Gallus gallus domesticus) from Canada and China.

Item Type: Journal Article
Murdoch Affiliation(s): School of Veterinary and Life Sciences
Publisher: Academic Press
Copyright: © 2015 Published by Elsevier Inc.
URI: http://researchrepository.murdoch.edu.au/id/eprint/26275
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