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Coccidia (Apicomplexa) from Heteromyid Rodents in the Southwestern United States, Baja California, and Northern Mexico with Three New Species from Chaetodipus hispidus

P. L. Ford, D. W. Duszynski and C. T. McAllister
The Journal of Parasitology
Vol. 76, No. 3 (Jun., 1990), pp. 325-331
DOI: 10.2307/3282659
Stable URL: http://www.jstor.org/stable/3282659
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Coccidia (Apicomplexa) from Heteromyid Rodents in the Southwestern United States, Baja California, and Northern Mexico with Three New Species from Chaetodipus hispidus
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Abstract

Fecal samples from 223 heteromyid rodents of 4 genera and 13 species were collected from California, New Mexico, and Texas and from Baja California Norte and Sonora, Mexico. Of these, 84 (38%) were infected with coccidian oocysts; 72 of 84 (86%) infected animals had only 1 species of coccidian. Eleven species of coccidia were identified including 1 cyclosporan and 10 eimerians; the cyclosporan and 2 of the eimerians are described as new species. Sporulated oocysts of Cyclospora angimurinensis n. sp. were subspheroidal, 21.9 x 19.3 (19-24 x 16-22) µm, with sporocysts lemon-shaped, 11.9 x 9.5 (9-15 x 8-11) µm; it was found in 1 of 20 (4%) Chaetodipus hispidus. Sporulated oocysts of Eimeria chaetodipi n. sp. were subspheroidal, 16.7 x 14.6 (13-19.5 x 12-17) µm, with sporocysts ovoidal, 8.7 x 6.6 (7.5-10.5 x 5-7.5) µm; it was found in 3 of 20 (15%) C. hispidus. Sporulated oocysts of Eimeria hispidensis n. sp. were subspheroidal, 20.5 x 17.4 (17-23 x 14-21) µm, with sporocysts lemon-shaped, 9.3 x 7.2 (7.5-10.5 x 5-9) µm; it was found in 4 of 20 (20%) C. hispidus. Prevalence of infection included 0 of 20 Chaetodipus arenarius, 0 of 16 Chaetodipus baileyi, 25 of 46 (54%) Chaetodipus californicus, 13 of 30 (43%) Chaetodipus fallax, 7 of 20 (35%) Chaetodipus formosus, 14 of 20 (70%) C. hispidus, 4 of 25 (16%) Chaetodipus penicillatus, 5 of 7 (71%) Chaetodipus spinatus, 8 of 21 (38%) Dipodomys elator, 1 of 1 Perognathus flavescens, 5 of 11 (45%) Perognathus flavus, 0 of 3 Perognathus inornatus, and 2 of 3 (67%) Liomys pictus. The following coccidians were identified from infected rodents: C. angimurinensis n. sp. from C. hispidus; Eimeria albigulae from C. californicus; Eimeria arizonensis from C. californicus and D. elator, E. chaetodipi n. sp. from C. hispidus; Eimeria balphae from D. elator; E. hispidensis n. sp. from C. hispidus; Eimeria langebarteli from C. hispidus; Eimeria liomysis from L. pictus; Eimeria merriami from C. penicillatus; Eimeria reedi from C. californicus, C. fallax, C. formosus, C. hispidus, C. penicillatus, C. spinatus, and P. flavus; and Eimeria scholtysecki from C. californicus.

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