Bioaccumulation and biological effects of cigarette litter in marine worms
Bioaccumulation and biological effects of cigarette litter in marine worms
复制标题
香烟垃圾在海洋蠕虫中的生物积累和生物效应
作者：
S. Wright;D. Rowe;M. Reid;K. Thomas;T. Galloway
海洋废弃物是一个全球性的环境问题。香烟过滤嘴是主要的沿海垃圾;每年有4.5万亿个垃圾，是生物塑料微纤维（醋酸纤维素）和对海洋环境有害的有毒物质的来源。尽管吸烟对人类健康有危害，但人们对香烟过滤嘴对海洋生物的危害知之甚少。在这里，我们研究了吸烟的香烟过滤嘴毒物和微纤维的多毛类蠕虫Hediste多样性（沙虫），沿海沉积物的广泛居民的影响。与控制条件下的沙虫相比，暴露于浓度比城市径流低60倍的海水中的香烟滤嘴毒物的沙虫表现出明显更长的穴居时间，>30%的体重减轻和>2倍的DNA损伤。相比之下，暴露于海洋沉积物中的香烟过滤嘴微纤维的沙虫没有显着影响。海水中尼古丁的生物富集系数比沉积物中尼古丁的生物富集系数高500倍。我们的研究结果说明了水柱中的生物体对吸烟碎片和相关有毒物质的脆弱性，并强调了吸烟过滤嘴碎片对水生生物构成的风险。
Marine debris is a global environmental issue. Smoked cigarette filters are the predominant coastal litter item; 4.5 trillion are littered annually, presenting a source of bioplastic microfibres (cellulose acetate) and harmful toxicants to marine environments. Despite the human health risks associated with smoking, little is known of the hazards cigarette filters present to marine life. Here we studied the impacts of smoked cigarette filter toxicants and microfibres on the polychaete worm Hediste diversicolor (ragworm), a widespread inhabitant of coastal sediments. Ragworms exposed to smoked cigarette filter toxicants in seawater at concentrations 60 fold lower than those reported for urban run-off exhibited significantly longer burrowing times, >30% weight loss and >2-fold increase in DNA damage compared to ragworms maintained in control conditions. In contrast, ragworms exposed to smoked cigarette filter microfibres in marine sediment showed no significant effects. Bioconcentration factors for nicotine were 500 fold higher from seawater than from sediment. Our results illustrate the vulnerability of organisms in the water column to smoking debris and associated toxicants and highlight the risks posed by smoked cigarette filter debris to aquatic life.
影响因子：
16.8
作者：
Sutherland, William J.;Clout, Mick;Watkinson, Andrew R.
通讯作者：
Watkinson, Andrew R.
影响因子：
5.1
作者：
Crowley-Weber, CL;Dvorakova, K;Payne, CM
通讯作者：
Payne, CM
影响因子：
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作者：
Benowitz, Neal L;Hukkanen, Janne;Jacob, Peyton 3rd
通讯作者：
Jacob, Peyton 3rd