Identification and genetic characterization of a novel species of Choleoeimeria Schneider, 1875 from a captive‐bred bilby (Thylacomyidae; Macrotis lagotis) (Reid, 1837) in Western Australia

Belinda Brice; Huimin Gao; Bruno P. Berto; Gwyneth Thomas; Aileen Elloit; Alireza Zahedi

doi:10.1002/ece3.10933

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Identification and genetic characterization of a novel species of Choleoeimeria Schneider, 1875 from a captive‐bred bilby (Thylacomyidae; Macrotis lagotis) (Reid, 1837) in Western Australia

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Identification and genetic characterization of a novel species of Choleoeimeria Schneider, 1875 from a captive‐bred bilby (Thylacomyidae; Macrotis lagotis) (Reid, 1837) in Western Australia

Belinda Brice, Huimin Gao, Bruno P. Berto, Gwyneth Thomas, Aileen Elloit and Alireza Zahedi

Ecology and evolution, Vol.14(2), e10933

2024

DOI: https://doi.org/10.1002/ece3.10933

PMID: 38384821

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Abstract

Autecology

Nature Notes

A novel Eimeria sp. from a captive-bred bilby (Macrotis lagotis Reid, 1837) has been identified in Western Australia. The bilby was bred at the Kanyana Wildlife Rehabilitation Centre, Perth, as part of the National Bilby Recovery Plan. Oocysts (n = 31) irregular blunt ellipsoidal, 17–18 × 11–12 (17.2 × 11.3); length/width (L/W) ratio 1.4–1.5 (1.5). Wall bi-layered, 0.8–1.0 (0.9) thick, outer layer smooth, c.2/3 of total thickness. Micropyle barely discernible. Oocyst residuum is absent, but 2–3 small polar granules are present. Sporocysts (n = 31) ovoidal, 7–8 × 5–6 (7.8 × 5.7); L/W ratio 1.3–1.4 (1.4). Stieda, sub-Stieda and para-Stieda bodies absent or indiscernible; sporocyst residuum present, usually as an irregular body consisting of numerous granules that appear to be membrane-bound or sometimes diffuse among sporozoites. Sporozoites vermiform with a robust refractile body. Further molecular characterization was conducted on the sporulated oocysts. At the 18S locus, it sat in a large clade of the phylogenetic tree with two isolates of Eimeria angustus from quendas (Isoodon obesulus Shaw, 1797) and the Choleoeimeria spp. It shared the highest identity with E. angustus (KU248093) at 98.84%; at the COI gene locus, it was unique and most closely related to Choleoeimeria taggarti, which is hosted by another species of marsupial, the yellow-footed antechinus (Antechinus flavipes flavipes), with 90.58% genetic similarity. Based on morphological and molecular data, this isolate is a new species and named as Choleoeimeria yangi n. sp.

Details

Title: Identification and genetic characterization of a novel species of Choleoeimeria Schneider, 1875 from a captive‐bred bilby (Thylacomyidae; Macrotis lagotis) (Reid, 1837) in Western Australia
Authors/Creators: Belinda Brice - Kanyana Wildlife Rehabilitation Centre
Huimin Gao - Hebei Academy of Agriculture and Forestry Sciences
Bruno P. Berto - Universidade Federal Rural do Rio de Janeiro
Gwyneth Thomas - Kanyana Wildlife Rehabilitation Centre
Aileen Elloit - Murdoch University
Alireza Zahedi - Murdoch University Murdoch University
Publication Details: Ecology and evolution, Vol.14(2), e10933
Publisher: John Wiley and Sons Inc
Identifiers: 991005641569907891
Murdoch Affiliation: Centre for Biosecurity and One Health
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.217 Parasitology - Malaria, Toxoplasmosis & Coccidiosis; 1.217.1890 Coccidiosis
Web Of Science research areas: Ecology; Evolutionary Biology
ESI research areas: Environment/Ecology