Woodhouse Charlotte, Lindeque Penelope K, Galloway Tamara, Abbott Geoffrey D, Cole Matthew
Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth PL1 3DH, U.K.
University of Exeter, Geoffrey Pope Building, Stocker Road, Exeter EX4 4QD, U.K.
Environ Sci Technol. 2025 Sep 2;59(34):18259-18271. doi: 10.1021/acs.est.5c03654. Epub 2025 Aug 20.
Tire particles have been reported as a major source of microplastic pollution for aquatic environments, but interactions between biota and tire particles remain uncertain. In this study, we exposed the estuarine amphipod to environmentally relevant concentrations of tire particles to quantify the ingestion and adherence of tire particles via two different feeding modes: suspension feeding and surface deposit feeding. were placed into exposure treatments relevant to each feeding mode, dosed with tire particles (0.1 g/L). In both treatments, tire particles were found to be adhered and ingested by all individuals. In the suspension feeding treatment, individuals ingested significantly higher numbers of tire particles compared to the surface deposit treatment and controls (GLMM, < 0.001). had significantly higher numbers of adhered particles to the antenna compared to other body parts (Kruskal-Wallis, df = 6, < 0.001). The impact of anthropogenic particle adherence upon biota is poorly elucidated, but an array of adverse outcome pathways are postulated based on existing literature. The outcomes of this study will help to elucidate the exposure of biota to tire particles in benthic estuarine and coastal environments.
轮胎颗粒已被报道为水生环境中微塑料污染的主要来源，但生物群与轮胎颗粒之间的相互作用仍不明确。在本研究中，我们将河口双壳类动物暴露于与环境相关浓度的轮胎颗粒中，通过两种不同的摄食模式：悬浮摄食和表面沉积摄食，来量化轮胎颗粒的摄取和附着情况。将其置于与每种摄食模式相关的暴露处理中，用轮胎颗粒（0.1克/升）给药。在两种处理中，均发现所有个体都附着并摄取了轮胎颗粒。在悬浮摄食处理中，与表面沉积处理和对照组相比，个体摄取的轮胎颗粒数量显著更高（广义线性混合模型，P<0.001）。与其他身体部位相比，触角上附着的颗粒数量显著更高（克鲁斯卡尔-沃利斯检验，自由度=6，P<0.001）。人为颗粒附着对生物群的影响尚不清楚，但根据现有文献推测了一系列不良后果途径。本研究结果将有助于阐明底栖河口和沿海环境中生物群对轮胎颗粒的暴露情况。
