Hepatitis associated with a Sarcocystis canis-like protozoan in a Hawaiian monk seal (Monachus schauinslandi)

被引:13
作者
Yantis, D
Moeller, R
Braun, R
Gardiner, CH
Aguirre, A
Dubey, JP [1 ]
机构
[1] USDA, Anim Parasit Dis Lab, Anim & Nat Resources Inst, Beltsville Agr Res Ctr, Beltsville, MD 20705 USA
[2] Armed Forces Inst Pathol, Washington, DC 20306 USA
[3] Univ Hawaii, Joint Inst Marine & Atmospher Res, Honolulu, HI 96822 USA
关键词
D O I
10.1645/GE-3265RN
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
A Hawaiian monk seal (Monachus schauinslandi) died in captivity at the National Marine Fisheries Service, Kewalo Basin Facility in Honolulu, Hawaii. The animal was icteric, and the liver was friable. Microscopic lesions were detected in the colon and liver. Colonic lesions included multifocal, necrohemorrhagic colitis associated with gram-negative bacilli. The liver lesions included random hepatic necrosis and cholestasis. Asexual stages of a Sarcocystis canis-like apicomplexan were detected in hepatocytes. The parasite divided by endopolygeny. Merozoites occasionally formed rosettes around a central residual body. Ultrastructurally, merozoites lacked rhoptries. This is the first report of S. canis infection in M. schauinslandi, which is an endangered pinniped in U.S. waters.
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页码:1258 / 1260
页数:3
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