Egan Siobhon L, Ruiz-Aravena Manuel, Austen Jill M, Barton Xavier, Comte Sebastien, Hamilton David G, Hamede Rodrigo K, Ryan Una M, Irwin Peter J, Jones Menna E, Oskam Charlotte L
Centre for Biosecurity and One Health, Harry Butler Institute, Murdoch University, Murdoch, WA 6150, Australia.
Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA.
Pathogens. 2020 Oct 23;9(11):873. doi: 10.3390/pathogens9110873.
The impact of emerging infectious diseases is increasingly recognised as a major threat to wildlife. Wild populations of the endangered Tasmanian devil, , are experiencing devastating losses from a novel transmissible cancer, devil facial tumour disease (DFTD); however, despite the rapid decline of this species, there is currently no information on the presence of haemoprotozoan parasites. In the present study, 95 Tasmanian devil blood samples were collected from four populations in Tasmania, Australia, which underwent molecular screening to detect four major groups of haemoprotozoa: (i) trypanosomes, (ii) piroplasms, (iii) , and (iv) haemosporidia. Sequence results revealed infections in 32/95 individuals. was identified in 10 Tasmanian devils from three sites and a second sp. was identified in 22 individuals that were grouped within the poorly described clade. A single blood sample was positive for sp., which most closely matched . No other blood protozoan parasite DNA was detected. This study provides the first insight into haemoprotozoa from the Tasmanian devil and the first identification of and in this carnivorous marsupial.
新发传染病的影响日益被视为对野生动物的重大威胁。濒危物种袋獾的野生种群正因一种新型可传播癌症——袋獾面部肿瘤病(DFTD)而遭受毁灭性损失;然而,尽管该物种数量迅速减少,但目前尚无关于血原虫寄生虫存在情况的信息。在本研究中,从澳大利亚塔斯马尼亚的四个种群采集了95份袋獾血液样本,对其进行分子筛查以检测四类主要血原虫:(i)锥虫,(ii)梨形虫,(iii)[此处原文缺失相关内容],以及(iv)血孢子虫。测序结果显示95个个体中有32个感染。在来自三个地点的10只袋獾中鉴定出[此处原文缺失相关内容],在22个个体中鉴定出另一种[此处原文缺失相关内容],这些个体被归为描述不充分的[此处原文缺失相关内容]进化枝。一份血液样本对[此处原文缺失相关内容]呈阳性,与[此处原文缺失相关内容]最为匹配。未检测到其他血液原生动物寄生虫DNA。本研究首次深入了解了袋獾的血原虫情况,并首次在这种肉食性有袋动物中鉴定出[此处原文缺失相关内容]和[此处原文缺失相关内容]。