Division of Veterinary and Biomedical Sciences, Murdoch University, Western Australia, Australia.
Vet Parasitol. 2010 Mar 25;168(3-4):190-5. doi: 10.1016/j.vetpar.2009.11.015. Epub 2009 Nov 27.
Little is known about the prevalence and genotypes of Cryptosporidium in fish. The present study investigated the prevalence of Cryptosporidium species in cultured fingerlings (n=227), wild freshwater (n=227) and wild marine/estuarine species (n=255) of fish in Western Australia by PCR amplification at the 18S rRNA locus. Results revealed a low prevalence of Cryptosporidium infection in fish hosts; 0.8% (6/709). Four species of Cryptosporidium were identified including C. parvum, C. xiaoi and pig genotype II in whiting (Sillago vittata) and a novel Cryptosporidium spp. in mullets (Mugil cephalus). The identification of zoonotic species of Cryptosporidium in fish indicates that future research to gain a better understanding of the public health impacts is warranted. The detection of the protozoa in fish may also be a good sentinel for environmental contamination or ecosystem health.
关于鱼类中隐孢子虫的流行情况和基因型知之甚少。本研究通过 PCR 扩增 18S rRNA 基因座，调查了西澳大利亚养殖鱼苗（n=227）、野生淡水鱼（n=227）和野生海洋/河口鱼类（n=255）中隐孢子虫的流行情况。结果表明，鱼类宿主中隐孢子虫感染的发生率较低，为 0.8%（6/709）。鉴定出了 4 种隐孢子虫，包括银鳕鱼（Sillago vittata）中的小隐孢子虫、微小隐孢子虫和猪基因型 II，以及鲻鱼（Mugil cephalus）中的一种新型隐孢子虫。在鱼类中发现了人类隐孢子虫，表明有必要进行进一步的研究，以更好地了解其对公共卫生的影响。该原生动物在鱼类中的检测也可能是环境污染或生态系统健康的良好指标。
