WHO Collaborating Centre for the Molecular Epidemiology of Parasitic Infections, State Agricultural Biotechnology Centre, School of Veterinary and Biomedical Sciences, Murdoch University, South Street, WA 6150, Australia.
Vet Parasitol. 2010 Jun 24;170(3-4):207-11. doi: 10.1016/j.vetpar.2010.02.012. Epub 2010 Feb 18.
Giardia has been found in numerous species of mammalian wildlife but very little information is available on the species and strains/genotypes that occur naturally in mammals in the wild. Recently, a novel genotype of Giardia was described in Western Australia, in the Southern brown bandicoot, or quenda (Isoodon obesulus). In order to determine the host range, distribution and prevalence of this novel 'quenda' 'genotype of Giardia, a comprehensive survey of this marsupial and cohabiting mammalian species was undertaken throughout the mainland and some off-shore islands of Western Australia, including urban areas. The overall prevalence of Giardia in 351 wildlife samples was low, with only 4.8% (17) samples testing positive. Amongst the 51 quenda samples, 11.8% (6) were positive for the 'quenda' genotype, 5.9% (3) for assemblage C/D and 2% (1) for assemblages A and E. This study has demonstrated that Giardia is a remarkably rare parasite in native wildlife in Western Australia, raising questions about the ecology of Giardia infections in wildlife.
已在众多种类的哺乳动物野生动物中发现了贾第虫，但对于在野外自然存在于哺乳动物中的物种和菌株/基因型，我们知之甚少。最近，在澳大利亚西部的南部棕色袋狸（或袋貂）（Isoodon obesulus）中描述了一种新型贾第虫基因型。为了确定这种新型“袋貂”贾第虫基因型的宿主范围、分布和流行情况，在澳大利亚西部大陆和一些近海岛屿，包括城市地区，对这种有袋动物和同居的哺乳动物物种进行了全面调查。351 个野生动物样本中贾第虫的总体流行率较低，只有 4.8%（17 个）样本呈阳性。在 51 只袋貂样本中，11.8%（6 个）为“袋貂”基因型阳性，5.9%（3 个）为 C/D 组合阳性，2%（1 个）为 A 和 E 组合阳性。本研究表明，贾第虫在澳大利亚西部的本地野生动物中是一种非常罕见的寄生虫，这引发了关于野生动物中贾第虫感染生态学的问题。
