Franceschini Raffaella, Valiani Andrea, Ranucci David, Roila Rossana, Palma Giuseppe, Agnetti Francesco, Di Giacinto Giacomo, Branciari Raffaella
Department of Engineering Sciences, Guglielmo Marconi University, Rome.
Experimental Zooprophylactic Institute of Umbria and Marche Togo Rosati, Perugia.
Ital J Food Saf. 2023 Aug 7;12(3):11338. doi: 10.4081/ijfs.2023.11338. eCollection 2023 Aug 2.
is the primary source of fishing profit in Lake Trasimeno and a common host for spp. larvae. The presence of in fish is a public health concern, and effective risk management procedures are necessary to guarantee that infected products do not reach the market. Currently, in the European Union, there is no official sampling plan for fresh fish that defines sample size, inspection methods, and criteria for accepting or rejecting the product. An approach to risk management is proposed in this study. A total of 270 batches of , each consisting of 29 specimens, were collected and examined visually in 3 years (2020-2023). The prevalence of the parasite was 20% in 2020, and in the first months of 2021, it grew up to ⁓40%, then dropped to 12.50% in December 2021 and settled at 16% in February 2022. In January and February 2023, the prevalence fell below 1%. The mean abundance was calculated and used to establish a threshold value to determine fish marketability. In 2020 and 2021, several batches were judged not marketable, and in some batches, a freezing treatment was implemented to ensure the inactivation of the parasite. In the last months of 2022 and in January and February of 2023, the presence of parasites in captured fish was negligible, and this allowed the marketability of fish as fresh. The proposed sampling plan was effective in preventing the commercialization of potentially hazardous products.
是特拉西梅诺湖渔业利润的主要来源，也是 spp. 幼虫的常见宿主。鱼类体内 的存在是一个公共卫生问题，因此需要有效的风险管理程序来确保受感染的产品不会进入市场。目前，在欧盟，没有针对鲜鱼的官方抽样计划来确定样本大小、检验方法以及接受或拒收产品的标准。本研究提出了一种 风险管理方法。在3年（2020 - 2023年）内共收集了270批 ，每批由29个样本组成，并进行了目视检查。2020年寄生虫的感染率为20%，在2021年的前几个月，感染率上升至约40%，然后在2021年12月降至12.50%，并在2022年2月稳定在16%。在2023年1月和2月，感染率降至1%以下。计算了平均丰度并用于确定鱼类适销性的阈值。在2020年和2021年，几批鱼被判定不适销，在一些批次中实施了冷冻处理以确保寄生虫失活。在2022年的最后几个月以及2023年1月和2月，捕获的鱼类中寄生虫的存在可以忽略不计，这使得鱼类可以作为新鲜鱼上市销售。所提出的抽样计划有效地防止了潜在危险产品的商业化。
