{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T23:51:49Z","timestamp":1791244309863,"version":"4.1.0"},"reference-count":9,"publisher":"American Society of Parasitologists","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Parasitology"],"published-print":{"date-parts":[[2025,3,4]]},"abstract":"<jats:p>Morphologic development of unidentified Sarcocystis sp. schizonts associated with encephalitis in a 9-wk-old gray fox (Urocyon cinereoargenteus) from Texas is described. Sarcocystis schizonts were confined to lesions. They were sparsely distributed and their staining affinity for hematoxylin and eosin varied with developmental stages; immature schizonts were deeply stained compared with mature schizonts. Most parasites were extravascular and the host cell was not identified for those that were intracellular. The parasite divided by endopolygeny, in which the nucleus became lobulated but lobes remained connected. Schizonts were up to 30 lm long and contained up to 32 merozoites\/nucleus. The merozoites were slender and unlike any known species of Sarcocystis. The schizonts were distinct from Sarcocystis neurona schizonts, which cause encephalitis in many species of animals.<\/jats:p>","DOI":"10.1645\/24-107","type":"journal-article","created":{"date-parts":[[2025,3,7]],"date-time":"2025-03-07T00:11:28Z","timestamp":1741306288000},"page":"91-95","source":"Crossref","is-referenced-by-count":0,"title":["Morphologic Development of an Unidentified Species of Sarcocystis Associated with Encephalitis in a Gray Fox (Urocyon cinereoargenteus)"],"prefix":"10.1645","volume":"111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4455-2870","authenticated-orcid":false,"given":"J. P.","family":"Dubey","sequence":"first","affiliation":[{"name":"U.S. Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Gupta","sequence":"additional","affiliation":[{"name":"U.S. Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L. S.","family":"de Araujo","sequence":"additional","affiliation":[{"name":"U.S. Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"Neupane","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, Texas 77845."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B. F.","family":"Porter","sequence":"additional","affiliation":[{"name":"Department of Veterinary Pathobiology, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, Texas 77845."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1220","reference":[{"key":"2","doi-asserted-by":"crossref","unstructured":"J. P. Dubey, D. E. Duncan, C. A. Speer, et al.  \"Journal of Veterinary Diagnostic Investigation.\"  4, \"Congenital sarcocystosis in a two-day-old dog.\" 89 (1992)","DOI":"10.1177\/104063879200400122"},{"key":"3","doi-asserted-by":"publisher","unstructured":"J. P. Dubey  and A. N. Hamir  \"Journal of Parasitology.\"  86, \"Immunohistochemical confirmation of Sarcocystis neurona infections in raccoons, mink, cat, skunk and pony.\" 1150 (2000)","DOI":"10.1645\/0022-3395(2000)086[1150:ICOSNI]2.0.CO;2"},{"key":"4","doi-asserted-by":"publisher","unstructured":"J. P. Dubey  and C. A. Speer  \"Journal of Parasitology.\"  77, \"Sarcocystis canis n. sp. (Apicomplexa: Sarcocystidae), the etiologic agent of generalized coccidiosis in dogs.\" 522 (1991)","DOI":"10.2307\/3283155"},{"key":"5","doi-asserted-by":"publisher","unstructured":"S. Neupane, J. F. X. Wellehan, A. L. Childress, et al.  \"Journal of Veterinary Diagnostic Investigation.\"  35, \"Meningoencephalitis caused by concurrent infection with canine distemper virus and a unique Sarcocystis sp. in a gray fox.\" 443 (2023)","DOI":"10.1177\/10406387231169768"},{"key":"6","doi-asserted-by":"crossref","unstructured":"J. R. \u0160lapeta, D. Modr\u00fd, B. Koudela,  \"Parasitology Research.\"  85, \"Sarcocystis atheridis sp. nov., a new sarcosporidian coccidium from Nitsche's bush viper, Atheris nitschei Tornier, 1902, from Uganda.\" 758 (1999)","DOI":"10.1007\/s004360050627"},{"key":"7","doi-asserted-by":"publisher","unstructured":"C. A. Speer  and J. P. Dubey  \"Veterinary Parasitology.\"  95, \"Ultrastructure of schizonts and merozoites of Sarcocystis neurona.\" 263 (2001)","DOI":"10.1016\/S0304-4017(00)00392-7"},{"key":"8","doi-asserted-by":"publisher","unstructured":"J. F. Stanek, J. P. Dubey, M. J. Oglesbee, et al.  \"Journal of Parasitology.\"  88, \"Life cycle of Sarcocystis neurona in its natural intermediate host, the racoon, Procyon lotor.\" 1151 (2002)","DOI":"10.1645\/0022-3395(2002)088[1151:LCOSNI]2.0.CO;2"},{"key":"9","doi-asserted-by":"publisher","unstructured":"S. K. Verma, D. S. Lindsay, J. D. Mowery, et al.  \"Journal of Parasitology.\"  103, \"Sarcocystis pantherophis n. sp., from eastern rat snakes (Pantherophis alleghaniensis) definitive hosts and interferon gamma gene knockout mice as experimental intermediate hosts.\" 547 (2017)","DOI":"10.1645\/17-2"},{"key":"1","doi-asserted-by":"publisher","unstructured":"J. P. Dubey, Calero-Bernal R., B. M. 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