Anettová Lucia, Izquierdo-Rodriguez Elena, Foronda Pilar, Baláž Vojtech, Novotný Ladislav, Modrý David
Department of Botany and Zoology, Faculty of Science, Masaryk University, Czech Republic.
Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, La Laguna, Canary Islands, Spain.
Parasitology. 2022 Mar 24;149(7):1-23. doi: 10.1017/S0031182022000336.
is an invasive zoonotic nematode which causes eosinophilic meningitis in accidental hosts – vertebrates including humans – and is known to impact wildlife. Even though the parasite originates in Southeast Asia, it has spread worldwide, especially into fragile island ecosystems. The Canary Islands are a biodiversity hot spot with numerous endemic species affected by biological invasions. Among others, and threaten many endemic species by predation and may spread invasive pathogens, such as the rat lungworm , which was first described in Tenerife in 2010. Since it is known that lizards can act as paratenic hosts for and is a lizard abundant in Tenerife, the aim of this study was to reveal the role of these endemic lizards in the parasite's life cycle. were captured in Tegueste, Tenerife, and after euthanasia, liver and tail muscle samples were examined for the presence of . During microscopic examination, 8/36 liver samples (22.2%) contained granulomas with nematode larvae. In total, 10/39 liver samples (25.6%) and 7/36 tail muscle samples (19.4%) were positive for DNA using qPCR. This is a first report of a reptile endemic to the Canary Islands acting as paratenic host of . The fact that the parasite is obviously well-established in the island ecosystem and exploits endemic lizards as hosts may have important implications for the parasite's ecoepidemiology. Moreover, the parasite might threaten other species which depend on lizards in the island trophic web.
是一种侵袭性人畜共患线虫，可在意外宿主（包括人类在内的脊椎动物）中引起嗜酸性粒细胞性脑膜炎，并且已知会影响野生动物。尽管这种寄生虫起源于东南亚，但它已传播到世界各地，尤其是脆弱的岛屿生态系统。加那利群岛是一个生物多样性热点地区，有许多特有物种受到生物入侵的影响。其中，[物种名称1]和[物种名称2]通过捕食威胁许多特有物种，并可能传播入侵性病原体，如鼠肺线虫，该线虫于2010年在特内里费岛首次被描述。由于已知蜥蜴可以作为[寄生虫名称]的转续宿主，且[蜥蜴名称]在特内里费岛数量众多，因此本研究的目的是揭示这些特有蜥蜴在寄生虫生命周期中的作用。[蜥蜴名称]在特内里费岛的特格斯特被捕获，安乐死后，检查肝脏和尾部肌肉样本中是否存在[寄生虫名称]。在显微镜检查中，36份肝脏样本中有8份（22.2%）含有带有线虫幼虫的肉芽肿。使用qPCR检测，总共39份肝脏样本中有10份（25.6%）和36份尾部肌肉样本中有7份（19.4%）的[寄生虫名称]DNA呈阳性。这是关于加那利群岛特有的一种爬行动物作为[寄生虫名称]转续宿主的首次报告。这种寄生虫在岛屿生态系统中显然已很好地立足并以特有蜥蜴为宿主这一事实，可能对寄生虫的生态流行病学具有重要意义。此外，这种寄生虫可能会威胁到岛屿营养网中依赖蜥蜴的其他物种。
