Eimeria tiliquae n. sp. (Apicomplexa: Eimeriidae) from the shingleback skink (Tiliqua rugosa rugosa)

R. Yang; B. Brice; U. Ryan; M.D. Bennett

doi:10.1016/j.exppara.2012.11.012

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Eimeria tiliquae n. sp. (Apicomplexa: Eimeriidae) from the shingleback skink (Tiliqua rugosa rugosa)

R. Yang, B. Brice, U. Ryan and M.D. Bennett

Experimental Parasitology, Vol.133(2), pp.144-149

2013

DOI: https://doi.org/10.1016/j.exppara.2012.11.012

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Abstract

A new species, Eimeria tiliquae n. sp. is described from a shingleback skink (Tiliqua rugosa rugosa). Sporulated oocysts (n=. 50) are spherical to subspherical, with colourless trilaminate oocyst wall, 0.7 ± 0.1 (0.5-0.75) thick. Oocyst with 4 spheroidal to subspheroidal sporocysts. Oocyst length, 13.7 ± 0.9 (12.0-16.3); oocyst width, 12.8 ± 0.9 (11.5-15.0); oocyst length/width (L/W) ratio, 1.07 ± 0.05 (1.0-1.2). Micropyle, oocyst residuum and polar granule absent. Sporocysts with globular sporocyst residuum and 2 sporozoites. Sporocyst length, 6.0 ± 0.6 (5.0-7.5); sporocyst width, 5.4 ± 0.6 (4.0-7.0); sporocyst L/W ratio, 1.11 ± 0.11 (1.0-1.5). Stieda, parastieda and substieda bodies absent. Phylogenetic analysis of 18S rRNA sequences indicated that E. tiliquae n. sp. shared 96.4-96.5% genetic similarity to E. tropidura, its closest relative. Reptile-derived sequences were not available for the mitochondrial cytochrome oxidase gene (COI) and phylogenetic analysis at this locus placed E. tiliquae n. sp. in a clade by itself but grouping closest (92% similarity) with a novel isolate from a King's skink (Egernia kingii) from Western Australia. Based on morphological and molecular data, this isolate is a new species of coccidian parasite that to date has only been found in shingleback skinks.

Details

Title: Eimeria tiliquae n. sp. (Apicomplexa: Eimeriidae) from the shingleback skink (Tiliqua rugosa rugosa)
Authors/Creators: R. Yang (Author/Creator) - Murdoch University
B. Brice (Author/Creator) - Kanyana Wildlife Rehabilitation Centre
U. Ryan (Author/Creator) - Murdoch University
M.D. Bennett (Author/Creator) - Bristol Royal Infirmary
Publication Details: Experimental Parasitology, Vol.133(2), pp.144-149
Publisher: Academic Press
Identifiers: 991005542627807891
Copyright: © 2012 Elsevier Inc.
Murdoch Affiliation: School of Veterinary and Biomedical Sciences
Language: English
Resource Type: Journal article

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Citation topics: 1 Clinical & Life Sciences; 1.217 Parasitology - Malaria, Toxoplasmosis & Coccidiosis; 1.217.1890 Coccidiosis
Web Of Science research areas: Parasitology
ESI research areas: Microbiology