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Coccidia (Protozoa, Eimeriidae) of the pikas Ochotona collaris, O.princeps, and O.hyperborea yesoensis

Hobbs, R.P. and Samuel, W.M. (1974) Coccidia (Protozoa, Eimeriidae) of the pikas Ochotona collaris, O.princeps, and O.hyperborea yesoensis. Canadian Journal of Zoology, 52 (8). pp. 1079-1085.

Link to Published Version: http://dx.doi.org/10.1139/z74-143
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Abstract

Two new species of Eimeria and one of Isospora are described from the collared pika, Ochotona collaris, collected in the Yukon Territory, Canada. Oocysts of E. circumborealis n. sp. are ellipsoid to subspherical and measure 21–34 by 15–23 (26.6 by 20.2); sporocysts are ovoid, measuring 10–16 by 6–9 (13.4 by 8.2). A micropyle, diffuse polar granules, Stieda body, and sporocyst residua are present, Övoid oocysts of E. klondikensis n, sp. are 32–38 by 23–26(35.2 by 24,6); sporocysts are ovoid, measuring 14–16 by 8–10 (15.5 by 9.2). A prominent micropyle, polar granule, Stieda body, and sporocyst residua are present. Oocysts of I. yukonensis n. sp. are elongate ellipsoid, measuring 48–57 by 21–27 (52.4 by 23.3); sporocysts are ovoid measuring 26–29 by 12–14 (27.6 by 12.3). A Stieda body, substiedal body, and sporocyst residua are present. In addition, this is the first record of E. barretti, E. banffensis, E. calentinei, E. princepsis, and I. marquardti from O. collaris; and of E. circumborealis, E. calentinei, E. banffensis, E. klondikensis, E. princepsis, and E. worleyi from O. hyperborea yesoensis. All of the above species except I. yukonensis and E. worleyi were also found in O. princeps from southwestern Alberta; E. circumborealis and E. klondikensis are new host records for this pika.

Publication Type: Journal Article
Publisher: Canadian Science Publishing
URI: http://researchrepository.murdoch.edu.au/id/eprint/32726
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