Department of Animal Production Technology and Fishery, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand.
Environ Sci Pollut Res Int. 2020 Jul;27(21):27161-27168. doi: 10.1007/s11356-020-09147-8. Epub 2020 May 21.
Microplastics in marine organisms are nowadays considered a worldwide phenomenon. An action plan needs to establish to solve this marine pollutant. It requires multidisciplinary information, including the accumulation of data on microplastics in marine biota. The research of microplastic ingestion in the marine environment and organisms of Thailand is limited. As a result, this study was conducted to evaluate the accumulation of microplastics in marine fish from Thailand and to investigate whether the different foraging mechanisms of fish impact the occurrence of microplastics in their gastrointestinal tract. A total number of 361 demersal fish and 131 pelagic fish were investigated. The collected microplastics were counted according to their shape and color. Their polymer type was identified by FT-IR for the first time in fish from Thailand. Moreover, microplastics ingestion sorted by fish size was noted. The number of ingested microplastics in this study was relatively low compared to other locations. There was no significant difference in the number of microplastics ingested between demersal and pelagic fish (p = 0.132). Microplastic fibers were the dominant shape found in both demersal (82.76%) and pelagic fish (57.14%). The most common polymer type was polyamide in both demersal (55.17%) and pelagic fish (50.00%). The dominant microplastics color in both demersal and pelagic fish was red (31.03% and 28.57%, respectively). Microplastics ingestion along different fish sizes fluctuated. This study provides evidence to fill a gap of research relating to microplastic ingestion by fish from Thailand.
微塑料在海洋生物中已被视为一种全球性现象。需要制定行动计划来解决这一海洋污染物问题。这需要多学科的信息，包括在海洋生物区系中积累微塑料的数据。泰国对海洋环境和生物中微塑料摄入的研究有限。因此，进行了这项研究，以评估泰国海洋鱼类中微塑料的积累情况，并调查鱼类不同的觅食机制是否会影响其胃肠道中微塑料的存在。总共调查了 361 条底层鱼类和 131 条上层鱼类。根据形状和颜色对收集到的微塑料进行计数。首次在泰国鱼类中通过 FT-IR 鉴定了它们的聚合物类型。此外，还注意到按鱼类大小分类的微塑料摄入情况。与其他地方相比，本研究中摄入的微塑料数量相对较低。底层鱼类和上层鱼类摄入的微塑料数量没有显著差异（p=0.132）。微塑料纤维是底层鱼类（82.76%）和上层鱼类（57.14%）中发现的主要形状。底层鱼类（55.17%）和上层鱼类（50.00%）中最常见的聚合物类型是聚酰胺。底层鱼类和上层鱼类中最常见的微塑料颜色均为红色（分别为 31.03%和 28.57%）。不同大小鱼类的微塑料摄入情况波动。本研究提供了证据，填补了泰国鱼类摄入微塑料研究的空白。
