Department of Marine Biology, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77554, United States.
Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843, United States of America; School of Forest Resources and Conservation, University of Florida, Gainesville, FL 32611, United States of America.
Mar Pollut Bull. 2021 Jan;162:111825. doi: 10.1016/j.marpolbul.2020.111825. Epub 2020 Nov 14.
There is a paucity of information on the levels of PAHs and PCBs in the deep-sea (≥200 m). In this study, the body-burdens of 16 PAHs and 29 PCBs were measured in: Actinaria (sea anemones), Holothuroidea (sea cucumber), Pennatulacea (sea pens), and Crinoidea (sea lilies) in the deep Gulf of Mexico. All epibenthic species were collected at depths of approximately 2000 m. The PAH and PCB congener profile displayed a similar pattern of bioaccumulation across all four taxa. The high molecular weight PAH, dibenz[a,h]anthracene, was the most abundant PAH in all organisms, ranging from 36 to 53% of sum total PAHs. PCBs 101 and 138 exhibited the highest levels at 20-25% of total congener concentrations in all taxa. The exposure to PAHs and PCBs is likely attributed to contaminated particulate organic matter that is consumed by the deposit and filter feeding epibenthic megafauna sampled in this study.
深海（≥200 米）中多环芳烃（PAHs）和多氯联苯（PCBs）的含量信息有限。在本研究中，我们测量了深海墨西哥湾中：Actinaria（海葵）、Holothuroidea（海参）、Pennatulacea（海笔）和 Crinoidea（海百合）中 16 种多环芳烃和 29 种多氯联苯的体内负荷。所有底栖生物均在约 2000 米深处采集。所有四个分类群的多环芳烃和多氯联苯同系物的特征显示出相似的生物积累模式。高分子量的多环芳烃，二苯并[a,h]蒽，是所有生物中最丰富的多环芳烃，占总多环芳烃的 36%至 53%。所有分类群中，PCBs 101 和 138 的含量最高，占总同系物浓度的 20-25%。多环芳烃和多氯联苯的暴露可能归因于被底栖滤食性大型动物消耗的受污染的颗粒有机物质。
