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
文献类型： 外文期刊
作者： Brice, Belinda 1 ; Gao, Huimin 2 ; Berto, Bruno P. 3 ; Thomas, Gwyneth 1 ; Elloit, Aileen 4 ; Zahedi, Alireza 4 ;
作者机构： 1.Kanyana Wildlife Rehabil Ctr, Lesmurdie, WA, Australia
2.Hebei Acad Agr & Forestry Sci, Inst Cash Crops, Shijiazhuang, Peoples R China
3.Univ Fed Rural Rio De Janeiro, Dept Biol Anim, Inst Ciencias Biol & Saude, Seropedica, RJ, Brazil
4.Murdoch Univ, Coll Sci Hlth Engn & Educ, Murdoch, WA, Australia
5.Murdoch Univ, Harry Butler Inst, Ctr Biosecur & One Hlth, Perth, WA, Australia
6.Murdoch Univ, Coll Sci Hlth Engn & Educ, Murdoch, WA 6150, Australia
关键词： 18S rRNA; bilby; Choleoeimeria; coccidia; COI; Macrotis lagotis
期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.6； 五年影响因子：3.0 ）
ISSN： 2045-7758
年卷期： 2024 年 14 卷 2 期
页码：
收录情况： SCI
摘要： 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 x 11-12 (17.2 x 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 x 5-6 (7.8 x 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.
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