■微塑料(MPs)是海洋环境中普遍存在的污染物,在沿海沉积物中表现出长期的持久性。然而,它们被海洋生物吸收和在栖息地分布的机制知之甚少。本研究的目的是调查洞穴沉积物中MP污染的存在,饲喂颗粒,和Kachchh湾的Dotillablanfordi组织,古吉拉特邦。
■总共500克洞穴沉积物,100克饲料颗粒,和10个常驻D.blanfordi的身体组织被合并为一个复制品。分析了每个站点的七个副本,用于从三个站点提取MP,包括Asharmata,Mandvi,还有Serena,位于Kachchh湾。在分析收集的样品期间使用标准方案以分离MP。
■在洞穴沉积物中发现MP的丰度较高,在研究地点Mandvi饲喂D.blanfordi的颗粒和组织,其次是Serena和Asharmata.在D.blanfordi组织中发现MP的丰度较高,其次是洞穴沉积物和饲料颗粒。在洞穴沉积物中观察到MP丰度的显着变化,饲喂颗粒,和组织。具有各种形状的MP(纤维,电影,andfragment),尺寸(1-2、2-3、3-4和4-5毫米),和颜色(蓝色,绿色,黑色,粉色,紫色,从所有研究地点记录红色透明)。聚氨酯和聚氯乙烯被认为是提取的MPs的化学特征。目前的调查显示,与沉积物和颗粒相比,在D.blanfordi的组织中积累了更多的MP,表明海洋底栖动物群中MP污染的风险具有更大的生物累积率。D.blanfordi通过挖洞活动在潮间带中作为MP分布的结构化剂发挥着重要作用。
UNASSIGNED: Microplastics (MPs) are pervasive pollutants in the marine environment, exhibiting persistence in coastal sediment over extended periods. However, the mechanism of their uptake by marine organisms and distribution in habitat is less understood. The objective of the present
study was to investigate the presence of MP contamination in burrow sediment, feeding pellets, and tissue of Dotilla blanfordi in the Gulf of Kachchh, Gujarat State.
UNASSIGNED: A total of 500 g of burrow sediment, 100 g of feeding pellets, and body tissue of 10 resident D. blanfordi were pooled as one replica. Such seven replicas from each site were analyzed for MP extraction from three sites, including Asharmata, Mandvi, and Serena, located in the Gulf of Kachchh. The standard protocol was used during the analysis of the collected samples in order to isolate MPs.
UNASSIGNED: The abundance of MP was found higher in burrow sediment, feeding pellets and tissue of D. blanfordi at
study site Mandvi, followed by Serena and Asharmata. The abundance of MP was found higher in D. blanfordi tissue, followed by burrow sediment and feeding pellet. A significant variation was observed in MP abundance among burrow sediment, feeding pellets, and tissue. MPs with various shapes (fiber, film, and fragment), sizes (1-2, 2-3, 3-4, and 4-5 mm), and colors (blue, green, black, pink, purple, red transparent) were recorded from all the
study sites. Polyurethane and polyvinyl chloride were recognized as the chemical profile of the extracted MPs. The current investigation revealed greater accumulation of MPs in D. blanfordi\'s tissues compared to sediment and pellets, suggesting a risk of MP contamination in marine benthic fauna with a greater rate of bioaccumulation. D. blanfordi plays a significant role as a structuring agent for MP distribution in the intertidal flat through burrowing activity.