Enzootiology of Trypanosoma evansi in Pantanal, Brazil
Enzootiology of Trypanosoma evansi in Pantanal, Brazil
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DOI：
10.1016/j.vetpar.2004.07.013
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发表时间：
2004-11-10
影响因子：
2.6
通讯作者：
Jansen, AM
中科院分区：
文献类型：
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作者：
Herrera, HM;Dávila, AMR;Jansen, AM
为了更好地了解巴西潘塔纳尔湿地由伊氏锥虫引起的锥虫病的地方动物学，我们通过微量血细胞比容离心技术（MHCT）、免疫荧光抗体测试（IFAT）和聚合酶链反应（PCR）对家养和野生哺乳动物进行了检查。除绵羊和野猪外，所有采样物种均检测到特万氏菌感染。在水豚 (5/24)、长鼻浣熊 (18/115)、马 (31/321) 和狗 (3/ 112) 中观察到高寄生虫血症。在这些物种中，只有水豚没有出现贫血。低寄生虫血症，仅通过PCR检测；在水牛（18/43）、牛（29/331）、有袋动物（1/4）、小型啮齿动物（14/67）、蝙蝠（7/18）和犰狳（1/8）中发现。据记录，马匹感染特万西病毒的患病率最高（73%），但在受感染的马匹中没有观察到神经系统症状。应谨慎使用通过标准寄生虫学测试和 IFAT 进行的诊断，因为它们可能会忽略已被感染的马匹。研究了牧场管理与马特万氏菌感染之间的关系。讨论了除虻科动物和储存宿主之外的其他传播机制的重要性。 (C) 2004 Elsevier B.V. 保留所有权利。
In order to better understand the enzootiology of trypanosomiasis caused by Trypanosoma evansi in the Brazilian Pantanal we examined domestic and wild mammals by microhematocrit centrifuge technique (MHCT), immunofluorescence antibody test (IFAT) and polymerase chain reaction (PCR). T evansi infection was detected in all species sampled with exception of the sheep and the feral pig. High parasitemias were observed in capybaras (5/24), coatis (18/115), horses (31/321) and dogs (3/ 112). Among these species, only the capybaras did not develop anemia. Low parasitemias, only detected by PCR; were found in buffaloes (18/43), bovines (29/331), marsupials (1/4), small rodents (14/67), bats (7/18), and one armadillo (1/8). The highest prevalence of T evansi infection was recorded in horses (73%), although no neurological signs in infected horses were observed. Diagnosis through standard parasitological tests and IFAT should be used with caution since they may overlook comprovedly infected horses. The relationship between ranch management and T evansi infection in horse was investigated. The importance of other transmission mechanisms apart from the tabanids and reservoir hosts are discussed. (C) 2004 Elsevier B.V. All rights reserved.