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Journal article
Morphological and molecular characterization of Isospora elliotae n. sp. (Apicomplexa: Eimeriidae) from the Australian magpie Gymnorhina tibicen (Latham, 1801) (Passeriformes: Artamidae) in Western Australia
Ecology and evolution, Vol.13(9), e10505
2023
Appears in Open Access via Read & Publish Agreements
Abstract
A new coccidian species, Isospora elliotae n. sp., from the Australian magpie Gymnorhina tibicen (Latham, 1801) in Western Australia, is described and characterized morphologically and molecularly. Microscopic analysis of a faecal sample identified subspheroidal oocysts (n = 20), 20–22 × 18–20 (20.7 × 18.7); length/width (L/W) ratio 1.05–1.14 (1.10). Wall bi-layered, 1.0–1.3 (1.2) thick, outer layer smooth, c. 2/3 of total thickness. Micropyle and oocyst residuum absent, but usually two polar granules are present. Sporocysts (n = 28) ovoidal, 12–13 × 9–11 (12.6 × 9.7); L/W ratio 1.22–1.35 (1.30). Stieda body present, flattened to half-moon-shaped, c. 0.5 deep × 2.0 wide; sub-Stieda indistinct or barely discernible, c. 1.0 deep × 2.5 wide; para-Stieda body absent; sporocyst residuum present, composed of granules dispersed among the sporozoites. Sporozoites vermiform, with anterior and posterior refractile bodies and nucleus. Segments of three gene loci (18S rRNA, 28S rRNA and COI) were sequenced and I. elliotae n. sp. exhibited 99.8% genetic similarity to Isospora sp. MAH-2013a (KF648870) followed by 99.7% genetic similarity to Isospora neochmiae (Yang, Brice & Ryan, 2016) (KT224380) at the 18S rRNA gene locus. It shared 97.0% genetic similarity with an unnamed Isospora sp. (AY283852) at the 28S rRNA gene locus and it also shared the highest genetic similarity of 99.8% with the unnamed Isospora sp. from an American crow (OL999120) at the COI gene locus. Based on morphological and molecular data, this isolate is a new species named as I. elliotae n. sp.
Details
- Title
- Morphological and molecular characterization of Isospora elliotae n. sp. (Apicomplexa: Eimeriidae) from the Australian magpie Gymnorhina tibicen (Latham, 1801) (Passeriformes: Artamidae) in Western Australia
- Authors/Creators
- Rongchang Yang - Murdoch UniversitySiobhon Egan - Murdoch University, Centre for Computational and Systems MedicineHuimin Gao - Hebei Academiy of Agriculture and Forestry SciencesBelinda Brice - Kanyana Wildlife Rehabilitation CentreBruno P. Berto - Universidade Federal Rural do Rio de Janeiro
- Publication Details
- Ecology and evolution, Vol.13(9), e10505
- Publisher
- John Wiley and Sons Inc
- Identifiers
- 991005605569307891
- Copyright
- © 2023 The Authors.
- Murdoch Affiliation
- Centre for Biosecurity and One Health; Australian National Phenome Centre; School of Medical, Molecular and Forensic Sciences; Centre for Computational and Systems Medicine
- Language
- English
- Resource Type
- Journal article
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- 1.217 Parasitology - Malaria, Toxoplasmosis & Coccidiosis
- 1.217.1890 Coccidiosis
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