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Description of the oöcysts of Eimeria whitakeri n. sp. (Apicomplexa: Eimeriidae) from least shrews, Cryptotis parva (Insectivora: Soricidae)

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Abstract

Oöcysts of Eimeria whitakeri n. sp. are described from the faeces of the least shrew, Cryptotis parva (Insectivora: Soricidae), from Texas, USA. The oöcysts are spherical to subspherical, 17.4 × 16.4 (15–19 × 13–18.5) μm, with a bi-layered wall; their shape-index (length/width) is 1.1 (1.0–1.2). A micropyle and oöcyst residuum are absent, but a large polar granule is present. The sporocysts are ovoidal, 11.2 × 7.5 (9.5–12 × 6.5–8) μm, with Stieda and substieda bodies; their shape-index is 1.5 (1.4–1.6). The sporozoites each possess both anterior and posterior refractile bodies.

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Authors and Affiliations

  1. Division of Biology, Ackert Hall, Kansas State University, 66506, Manhattan, KS, U.S.A.

    Steve J. Upton

  2. Renal Metabolic Laboratory (151-G), Department of Veterans Administration Medical Center, 4500 South Lancaster Road, 75216, Dallas, TX, U.S.A.

    Chris T. McAllister

Authors
  1. Steve J. Upton
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  2. Chris T. McAllister
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Upton, S.J., McAllister, C.T. Description of the oöcysts of Eimeria whitakeri n. sp. (Apicomplexa: Eimeriidae) from least shrews, Cryptotis parva (Insectivora: Soricidae). Syst Parasitol 20, 59–61 (1991). https://doi.org/10.1007/BF00009711

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  • DOI: https://doi.org/10.1007/BF00009711

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