Susceptibility of Sardinella lemuru to emerging marine microplastic pollution

IF 3.1 Q2 ENVIRONMENTAL SCIENCES
J. D. Palermo, Kevin L. Labrador, Jhunrey Follante, Altair B. Agmata, Ma. Josefa R. Pante, R. Rollon, L. David
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引用次数: 13

Abstract

Marine microplastics are emerging pollutants that impact across levels of marine food chain at a global scale. Its presence was determined on Sardinella lemuru, a commercial pelagic fish that are harvested generally in the Northern Mindanao, consumed locally, and exported worldwide as bottled or canned sardine products.  The stomach contents of 600 sardines were examined visually under a microscope, stained with Rose Bengal, and tested with hot needle technique to identify ingested microplastics. These anthropogenic particles were measured and physically classified into fibers, fragments, and films. Results of this study showed that 85% of S. lemuru were already contaminated with 3.74 ± 3.92 # of microplastics even before being processed into various sardine products. These microplastics ranged from 0.12 to 21.30 mm and 80 % were mostly < 2.5 mm size classes. The dominant microplastics were 97.94 % in the form of fibers while 1.52 % and 0.54 % were respectively classified into fragments and films. Method validation by isolating microplastics from spiked samples (n = 30) with three retrieval attempts showed 100% recovery efficiency. While results from Canonical Correspondence Analysis of ingested microplastic data had no relationship with the standard lengths of the sardine and the masses of ingested food materials at varying size classes, the total number of ingested microplastics from 2014 to 2016  were directly correlated (r2=0.91, p=0.003) with the human population at the landing sites  along the coastline of northern Mindanao.
狐尾沙丁鱼对新出现的海洋微塑料污染的敏感性
海洋微塑料是新出现的污染物,在全球范围内影响海洋食物链的各个层面。它的存在是在北棉兰老岛捕捞的一种商业中上层鱼类Sardinella lemuru上确定的,在当地消费,并作为瓶装或罐装沙丁鱼产品出口到世界各地。在显微镜下对600条沙丁鱼的胃内容物进行了目视检查,用玫瑰孟加拉染色,并用热针技术进行了测试,以确定摄入的微塑料。对这些人为颗粒进行了测量,并将其物理分类为纤维、碎片和薄膜。这项研究的结果表明,85%的狐猴在被加工成各种沙丁鱼产品之前就已经被3.74±3.92#的微塑料污染。这些微塑料的尺寸在0.12至21.30毫米之间,80%的微塑料尺寸大多小于2.5毫米。主要的微塑料为97.94%的纤维形式,而1.52%和0.54%的微塑料分别分为碎片和薄膜。通过三次检索尝试从加标样品(n=30)中分离微塑料进行方法验证,显示出100%的回收率。虽然摄入微塑料数据的典型对应分析的结果与沙丁鱼的标准长度和不同尺寸类别的摄入食物材料的质量没有关系,2014年至2016年摄入的微塑料总量与棉兰老岛北部海岸线登陆点的人口直接相关(r2=0.91,p=0.003)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.90
自引率
2.90%
发文量
11
审稿时长
8 weeks
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