Microplastic ingestion by the farmed sea cucumber Apostichopus japonicus in China
Microplastic ingestion by the farmed sea cucumber Apostichopus japonicus in China
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中国养殖刺参对微塑料的摄入
DOI：
10.1016/j.envpol.2018.11.083
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发表时间：
2019-02-01
影响因子：
8.9
通讯作者：
Yang, Hongsheng
中科院分区：
文献类型：
--
作者：
Mohsen, Mohamed;Wang, Qing;Yang, Hongsheng
养殖海参的微塑料摄入没有记录。从我国沿着渤海和黄海的8个养殖场采集的仿刺参（Apostichopus）中分离出微塑料。为了检查微塑料的摄入，将肠分离、消化，然后进行漂浮试验。沉积物中的微塑料丰度范围为20至1040颗粒/kg（-1）干沉积物，而摄入的微塑料范围为0至30颗粒/肠（-1）。过滤体腔液后，从体腔液中提取的微塑料范围为0至19个颗粒动物（-1）。因此，我们推测微塑料可能转移到海参体腔液。摄食的微塑料与动物体重无关，但具有位置依赖性，表明海参可以作为沉积物中微塑料污染监测的哨兵。通过傅里叶变换红外光谱分析，确定了微塑料的种类主要为玻璃纸、聚酯和聚对苯二甲酸乙二醇酯。研究结果表明，微塑料在海参养殖场中广泛存在，海参在摄食微塑料时应尽量张着嘴。此外，这些微粒还可能转移到海参的体腔液中。需要进一步的研究来评估微塑料对海参生长和生理状态的慢性影响。(C)2018爱思唯尔有限公司版权所有。
Microplastic ingestion by the farmed sea cucumber is undocumented. Microplastics were isolated from the sea cucumber Apostichopus japonicus that was collected from eight farms along the Bohai Sea and the Yellow Sea in China. To examine microplastic ingestion, the intestines were isolated, digested and then subjected to the floatation test. The microplastic abundance in the sediment ranged from 20 to 1040 particles kg(-1) of dry sediment, while the ingested microplastics ranged from 0 to 30 particles intestine(-1). After filtering the coelomic fluid, the extracted microplastics from the coelomic fluid ranged from 0 to 19 particles animal(-1). Thus, we speculated that microplastics may transfer to the coelomic fluid of sea cucumber. The ingested micropiastics did not correlate with the animal body weight but was site dependent, suggesting that sea cucumber may serve as sentinel for microplastic pollution monitoring in the sediment. The microplastics were identified by Fourier transform infrared micro spectroscopy, and the polymer types were mainly cellophane, polyester, and polyethylene terephthalate. This study revealed that, microplastics widely existed in sea cucumber farms, and that sea cucumbers ingest microplastics as suitable with their mouth open. Moreover, the microptastics might transfer to the coelomic fluid of the sea cucumber. Further investigations are needed to assess the chronic effect of the microplastics on the growth and physiological status of the sea cucumber. (C) 2018 Elsevier Ltd. All rights reserved.