SARCOCYSTIS NEURONA INFECTIONS IN SEA OTTER (ENHYDRA LUTRIS): EVIDENCE FOR NATURAL INFECTIONS WITH SARCOCYSTS AND TRANSMISSION OF INFECTION TO OPOSSUMS (DIDELPHIS VIRGINIANA)
نویسندگان
چکیده
منابع مشابه
Sarcocystis neurona retinochoroiditis in a sea otter (Enhydra lutris kenyoni).
Sarcocystis neurona is an important cause of fatal disease in sea otters in the USA. Encephalitis is the predominant lesion and parasites are confined to the central nervous system and muscles. Here we report retinochoroiditis in a sea otter (Enhydra lutris kenyoni) found dead on Copalis Beach, WA, USA. Salient lesions were confined to the brain and eye. Multifocal nonsuppurative meningoencepha...
متن کاملSarcocysts of an unidentified species of Sarcocystis in the sea otter (Enhydra lutris).
The number of Sarcocystis species that infect sea otters (Enhydra lutris) is unknown. Sea otter tissues were recently shown to harbor sarcocysts of S. neurona and of unidentified species of Sarcocystis. Whereas sarcocysts of S. neurona have walls 1-3 microm thick with type 9 villar protrusions, ultrastructure of a distinct thin-walled sarcocyst (0.5-0.7 microm thick) lacking villar protrusions,...
متن کاملConcurrent presence of Sarcocystis neurona sporocysts, Besnoitia darlingi tissue cysts, and Sarcocystis inghami sarcocysts in naturally infected opossums (Didelphis virginiana).
Opossums (Didelphis virginiana) are exposed to a wide range of coccidia through feeding on a variety of foods, including, but not limited to, carrion, insects, and nestling birds. Abundant D. virginiana populations in urban and suburban areas can be important reservoirs of parasitic infection because of their profuse and prolonged excretion of the sporocysts of several species of Sarcocystis, t...
متن کاملBiological characterisation of Sarcocystis neurona isolated from a Southern sea otter (Enhydra lutris nereis).
Sarcocystis neurona was isolated from the brain of a juvenile, male southern sea otter (Enhydra lutris nereis) suffering from CNS disease. Schizonts and merozoites in tissue sections of the otter's brain reacted with anti-S. neurona antiserum immunohistochemically. Development in cell culture was by endopolyogeny and mature schizonts were first observed at 3 days postinoculation. PCR of merozoi...
متن کاملModest genetic differentiation among North American populations of Sarcocystis neurona may reflect expansion in its geographic range.
Sarcocystis neurona is an important cause of neurological disease in horses (equine protozoal myeloencephalitis, EPM) and sea otters in the United States. In addition, EPM-like disease has been diagnosed in several other land and marine mammals. Opossums are its only definitive hosts. Little genetic diversity among isolates of S. neurona from different hosts has been reported. Here, we used 11 ...
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ژورنال
عنوان ژورنال: Journal of Parasitology
سال: 2001
ISSN: 0022-3395,1937-2345
DOI: 10.1645/0022-3395(2001)087[1387:sniiso]2.0.co;2