Microplastic fragments and microbeads in digestive tracts of planktivorous fish from urban coastal waters.
Microplastic fragments and microbeads in digestive tracts of planktivorous fish from urban coastal waters.
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DOI：
10.1038/srep34351
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发表时间：
2016-09-30
影响因子：
4.6
通讯作者：
Takada H
中科院分区：
文献类型：
--
作者：
Tanaka K;Takada H
对采自东京湾的鱼(Engraulis Japan Onicus)消化道微塑料进行了研究。在鱼中检出塑料49条(77%)，平均2.3条，每条最多15条。用傅里叶变换红外光谱对所有塑料进行了鉴定。大多数是聚乙烯(52.0%)或聚丙烯(43.3%)。大部分塑料是碎片(86.0%)，但7.3%是珠子，其中一些是微珠，与洗面奶中发现的类似。80%的塑料的尺寸在150 μm到1000 μm之间，比报道的海面上漂浮的微塑料的尺寸范围小，可能是因为凤尾鱼的地下觅食行为反映了塑料在地表水和地下水中的不同尺寸分布。Engraulis spp.对世界各地的许多人类和其他生物来说是重要的食物。我们的观察进一步证实，微塑料已经渗透到海洋生态系统中，人类可能会接触到它们。由于微塑料保留了危险的化学物质，摄入的塑料增加了鱼类化学物质的暴露，这是令人担忧的。应该研究这种暴露，并将其与天然饮食中的暴露进行比较。
We investigated microplastics in the digestive tracts of 64 Japanese anchovy (Engraulis japonicus) sampled in Tokyo Bay. Plastic was detected in 49 out of 64 fish (77%), with 2.3 pieces on average and up to 15 pieces per individual. All of the plastics were identified by Fourier transform infrared spectroscopy. Most were polyethylene (52.0%) or polypropylene (43.3%). Most of the plastics were fragments (86.0%), but 7.3% were beads, some of which were microbeads, similar to those found in facial cleansers. Eighty percent of the plastics ranged in size from 150 μm to 1000 μm, smaller than the reported size range of floating microplastics on the sea surface, possibly because the subsurface foraging behavior of the anchovy reflected the different size distribution of plastics between surface waters and subsurface waters. Engraulis spp. are important food for many humans and other organisms around the world. Our observations further confirm that microplastics have infiltrated the marine ecosystem, and that humans may be exposed to them. Because microplastics retain hazardous chemicals, increase in fish chemical exposure by the ingested plastics is of concern. Such exposure should be studied and compared with that in the natural diet.
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