University of Iceland, Faculty of Food Science and Nutrition, Vínlandsleid 12-14, 113 Reykjavík, Iceland; Matís ohf., Food and Biotech R&D, Vínlandsleid 12, 113 Reykjavík, Iceland.
Technical University of Denmark, National Institute of Aquatic Resources, Section for Oceans and Arctic, Kemitorvet, 2800 Lyngby, Denmark.
Food Res Int. 2020 Nov;137:109644. doi: 10.1016/j.foodres.2020.109644. Epub 2020 Aug 27.
The Northeast Atlantic mackerel (Scomber scombrus) is a zooplanktivorous fish with its main summer feeding grounds in the waters around Iceland. The zooplankton in the stomachs of the caught fish causes several problems during processing due to the high enzyme activity of the zooplankton. The aim of the study was to evaluate the chemical characteristics of zooplankton that accompanies mackerel as a side-catch and stomach fullness as affected by catching year, season, catching zone, and catching method over three mackerel seasons from 2016 to 2018. Species identification by the fatty acid tropic marker method (FATM) was also applied within the zooplankton rich side-stream. FATM analysis indicated that the majority of the zooplankton mass belonged to Calanus finmarchicus. The lipid composition of the zooplankton rich side-stream varied between years but was rich in monounsaturated, as well as polyunsaturated fatty acids (PUFA), such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The results suggest that the zooplankton rich side-stream from mackerel caught in Icelandic waters has the potential for further sustainable processing into valuable nutrients.
北大西洋鲭鱼（Scomber scombrus）是一种浮游动物食性鱼类，其主要夏季觅食地在冰岛周围水域。由于浮游动物的高酶活性，被捕捞鱼类胃中的浮游动物在加工过程中会引起一些问题。本研究的目的是评估 2016 年至 2018 年三个鲭鱼季节中，伴随鲭鱼作为副渔获物的浮游动物的化学特性，以及其丰度受捕捞年份、季节、捕捞区和捕捞方法的影响。还在富含浮游动物的支流中应用了脂肪酸示踪标记法（FATM）进行物种鉴定。FATM 分析表明，大部分浮游动物质量属于长额冷水性十足目。浮游动物丰富支流的脂质组成在不同年份有所不同，但富含单不饱和以及多不饱和脂肪酸（PUFA），如二十碳五烯酸（EPA）和二十二碳六烯酸（DHA）。研究结果表明，从冰岛水域捕获的鲭鱼中富含浮游动物的支流具有进一步可持续加工成有价值营养物质的潜力。
