尽管澳大利亚每年的海鲜消费量有所增加,关于鱼类人畜共患病寄生虫的发生和流行以及它们可能对人类健康造成的风险的研究是有限的。本研究旨在确定新南威尔士州常见鱼类中人畜共患线虫的发生,澳大利亚人口最多的州。三种鱼,包括澳大利亚的pilchard,澳大利亚凤尾鱼,和东方学校的白人,是从鱼市场购买的,并检查了线虫寄生虫的存在。在这项研究中检查的所有澳大利亚pilchards均被感染(100%;n=19),其次是东部学校白鲸(70%;n=20)和澳大利亚an鱼(56%;n=70)。线虫处于幼体阶段,因此,按形态类型分类,然后通过测序其内部转录间隔区(ITS)区域进行特异性鉴定。七种具有人畜共患潜力的不同幼虫类型,属于异语科(II型和II型Terranova)和Raphida科(IV型[基因型A和B],VIII,XIV和一种新的宫前鞘管幼虫类型,此处指定为类型XVIII),被发现了。新的幼虫类型被确定为地中海赤藓,基于ITS序列数据。新南威尔士州通常食用的鱼类中存在一系列人畜共患寄生虫的感染阶段很重要,尤其是,在一些菜肴中,这些鱼被整体使用,生的或未煮熟的。本研究为今后对这些寄生虫的其他方面的研究提供了基础,关于公共卫生。
Despite increases in the annual consumption of seafood in Australia, studies on the occurrence and prevalence of zoonotic parasites in fish and the risk they may pose to human health are limited. The present study was aimed at determining the occurrence of zoonotic nematodes in commonly consumed fish in New South Wales, Australia\'s most populous state. Three species of fish, including the Australian pilchard, Australian anchovy, and eastern school whiting, were purchased from a fish market and examined for the presence of nematode parasites. All Australian pilchards examined in this study were infected (100%; n = 19), followed by the eastern school whiting (70%; n = 20) and Australian anchovy (56%; n = 70). Nematodes were in the larval stage and, therefore, classified by morphotype, followed by specific identification through sequencing of their internal transcribed spacer (ITS) regions. Seven different larval types with zoonotic potential, belonging to the families Anisakidae (Contracaecum type II and Terranova type II) and
Raphidascarididae (Hysterothylacium types IV [genotypes A and B], VIII, XIV and a novel Hysterothylacium larval type, herein assigned as type XVIII), were found. The new larval type was identified as Hysterothylacium thalassini, based on ITS sequence data. The presence of the infective stage of a range of zoonotic parasites in fish commonly consumed in New South Wales is important, particularly as, in some dishes, these fish are used whole, raw or undercooked. This study provides the basis for future research on other aspects of these parasites, in regards to public health.