Carnevali Vincenzo, Nogueda-Torres Benjamín, Villagrán-Herrera María E, De Diego-Cabrera José A, Rocha-Chávez Gonzalo, Martínez-Ibarra José A
1 Department of Public Health and Infectious Diseases, University of Rome , Rome , Italy.
2 COFAA Grant Fellow, Laboratory of Helminthology, Department of Parasitology, National School of Biological Sciences, National Polytechnic Institute , Mexico City , Mexico.
Acta Vet Hung. 2017 Dec;65(4):505-509. doi: 10.1556/004.2017.048.
Small populations of Virginia opossum (Didelphis virginiana) in western Mexico are endangered by hunting and natural predators as well as by different kinds of diseases. After two serological analyses using Serodia® latex particle agglutination and indirect haemagglutination (IHA) tests, 35 (53.03%) of 66 collected opossums in two small towns in western Mexico were positive for the presence of Trypanosoma cruzi. Twenty-eight of the 35 seropositive opossums had pathological lesions: 11 had changes in only one organ, 13 in two organs, and four had pathological changes in three organs. Splenomegaly was the most common finding in the examined opossums, followed by hepatomegaly. These potentially fatal pathological changes could contribute to the scarcity of the opossum population, even leading to the extinction of this species in western Mexico.
墨西哥西部的弗吉尼亚负鼠（Didelphis virginiana）小种群因捕猎、自然天敌以及各种疾病而濒危。在使用Serodia®乳胶颗粒凝集试验和间接血凝试验（IHA）进行两项血清学分析后，在墨西哥西部两个小镇采集的66只负鼠中，有35只（53.03%）检测出克氏锥虫呈阳性。35只血清阳性的负鼠中有28只有病理病变：11只仅一个器官有变化，13只两个器官有变化，4只三个器官有病理变化。脾肿大是所检查负鼠中最常见的发现，其次是肝肿大。这些潜在的致命病理变化可能导致负鼠种群数量稀少，甚至导致该物种在墨西哥西部灭绝。
