Department of Fisheries, Marine Environment Research Center, Islamic Azad University, Chabahar branch, Chabahar, Iran.
Department of Marine Biology, Faculty of Marine Science, Chabahar Maritime University, Chabahar,, Province of Sistan dan Baluchestan, Iran.
Arch Environ Contam Toxicol. 2021 Apr;80(3):634-644. doi: 10.1007/s00244-021-00829-z. Epub 2021 Mar 22.
Marine debris and trace metals are among the common environmental contaminants known to affect marine organisms. In this study, the quantitative and qualitative aspects of marine debris levels and bioaccumulation of trace metals (Cadmium: Cd; Copper: Cu; Lead: Pb; and Zinc: Zn) were investigated in 42 green sea turtles (Chelonia mydas) stranded on the northern coast of the Sea of Oman. The greatest quantity of debris was found in the intestine, stomach, and esophagus of the animals, respectively. Results of a Marine Strategy Framework Directive (MSFD) subcategory analysis of the ingested debris showed that sheet and thread-like plastics were the most frequently detected debris followed by various rubbish. The results revealed that white-colored debris were the most common debris, followed by black > green > blue > transparent > and brown ones. The results suggested that the rope monofilament was the main source of the ingested debris by the green sea turtles. Concentrations of the trace metals in the liver, kidney, and muscle ranged between 0.66-33.43, 0.36-15.12, and 0.33-7.47 μg/g (ww), respectively. The results of this study suggest that ingested marine debris and tissue concentrations of trace metals are present at levels that may cause sublethal effects on green sea turtles (C. mydas) through potentially affecting the physiological processes and making the turtles susceptible to other natural or human threats. Results indicated that the green sea turtles from the northern coast of the Sea of Oman have high interaction with the marine debris. These factors are considered as a serious threat to the existence and survival of the green sea turtles (C. mydas) living on the northern coast of the Sea of Oman.
海洋垃圾和痕量金属是已知影响海洋生物的常见环境污染物。本研究调查了阿曼海北部搁浅的 42 只绿海龟（Chelonia mydas）体内海洋垃圾水平和痕量金属（镉：Cd；铜：Cu；铅：Pb；锌：Zn）的定量和定性方面。在动物的肠、胃和食管中分别发现了最多的垃圾。摄入的垃圾海洋战略框架指令（MSFD）亚类分析结果表明，片状和线状塑料是最常检测到的垃圾，其次是各种垃圾。结果表明，白色垃圾是最常见的垃圾，其次是黑色>绿色>蓝色>透明>棕色。结果表明，绳状单丝是绿海龟摄入垃圾的主要来源。痕量金属在肝脏、肾脏和肌肉中的浓度范围分别为 0.66-33.43、0.36-15.12 和 0.33-7.47μg/g（ww）。本研究结果表明，摄入的海洋垃圾和组织中痕量金属的浓度可能会通过潜在影响生理过程使绿海龟（C. mydas）受到亚致死影响，从而导致绿海龟处于可能的不利状态。结果表明，阿曼海北部沿海的绿海龟与海洋垃圾有很高的相互作用。这些因素被认为是对生活在阿曼海北部的绿海龟（C. mydas）生存的严重威胁。
