南非的鱼类品种替代和命名错误：一个经济、安全和可持续性的难题再探讨。

Fish species substitution and misnaming in South Africa: An economic, safety and sustainability conundrum revisited.

机构信息

Department of Animal Sciences, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa.

World Wildlife Fund South Africa - Southern African Sustainable Seafood Initiative (WWF-SASSI), PO Box 23273, Claremont 7735, South Africa.

出版信息

Food Chem. 2015 Oct 15;185:165-81. doi: 10.1016/j.foodchem.2015.03.113. Epub 2015 Apr 2.

DOI:10.1016/j.foodchem.2015.03.113

PMID:25952855

Abstract

While fish species mislabelling has emerged as a global problem, the tracking of improvements or deteriorations in seafood trading practices is challenging without a consistent basis for monitoring. The aim of this study was to develop a robust, repeatable species authentication protocol that could be used to benchmark the current and future incidences of fish mislabelling in South Africa. Using this approach, 149 fish samples collected from restaurants and retailers in three provinces (KwaZulu-Natal, Western Cape and Gauteng) were identified using DNA barcoding, supplemented in certain cases with mitochondrial control region sequencing. Overall, 18% of samples were incorrectly described in terms of species, with similar misrepresentation rates in restaurants (18%) and retail outlets (19%). While there appears to be some improvement in the transparency of local seafood marketing compared to previous studies, the results remain of concern and signal the need for enhanced seafood labelling regulations, monitoring and law enforcement.

摘要

虽然鱼类物种标签错误已经成为一个全球性问题，但如果没有一致的监测基础，跟踪海鲜贸易实践的改进或恶化情况是具有挑战性的。本研究的目的是开发一种强大、可重复的物种鉴定协议，可用于基准测试南非当前和未来鱼类标签错误的发生率。使用这种方法，对从三个省份（夸祖鲁-纳塔尔省、西开普省和豪登省）的餐馆和零售商收集的 149 个鱼类样本进行了 DNA 条形码鉴定，在某些情况下还辅以线粒体控制区测序。总体而言，18%的样本在物种描述方面存在错误，餐馆（18%）和零售店（19%）的错误率相似。虽然与之前的研究相比，当地海鲜营销的透明度似乎有所提高，但结果仍然令人担忧，并表明需要加强海鲜标签法规、监测和执法。