生物体大小在微塑料污染监测中的作用:Mytilaster lineatus 和 Amphibalanus improvisus 的启示

IF 3 3区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Mohammad Mehdi Chiani , Majid Rasta , Mojtaba S. Taleshi , Fatemeh Elmi
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引用次数: 0

摘要

海洋生物可以作为有价值的生物指标,为了解微塑料(MPs)在水生环境中的时空分布提供洞察力。虽然藤壶和贻贝有望成为沿海环境中微塑料污染的生物指标,但最近的研究对双壳类动物在这方面的功效提出了质疑。为了解决这个问题,我们的研究通过对这些滤食性生物的全面调查,研究了 Mytilaster lineatus 和 Amphibalanus improvisus 作为里海 MP 污染生物监测器的适宜性。2022 年 7 月至 9 月期间,在 9 个站点采集了沉积物、海水和生物样本。在所有分区中都检测到了多溴联苯醚,水的平均含量为 0.57 ± 0.59 微克/升,沉积物的平均含量为 72.66 ± 29.29 微克/千克干重,M. lineatus 的平均含量为 1.69 ± 0.79 微克/个体或 7.96 ± 3.231 微克/克湿重(湿重),A. improvisus 的平均含量为 1.8 ± 0.9 微克/个体或 35.18 ± 35.33 微克/克湿重。MPs 以大小为 1000-3000 μm、颜色为黑色、形状为纤维、聚合物为聚酰胺的级别为主。海水站和沉积物站的污染负荷指数(PLI)分别为 2.11 和 2.22,表明采样站的 MP 污染风险较低。从海水中分离出的 MP 丰度与从小型物种中提取的 MP 丰度呈正相关(p < 0.05)。生物浓缩系数(BCF)表明,两种生物都能吸收和积累周围水中的 MPs(BCF >1)。从生物体内提取的多溴联苯醚数量与其软组织之间存在负相关(p <0.01)。因此,个体较小的 M. lineatus 和 A. improvisus 更有可能被用于生物监测。我们的发现强调了物种大小在使用生物监测器评估MP污染中的重要性,并建议未来的研究纳入与大小相关的变量,以更全面地了解MPs生物监测器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The role of organisms’ size in microplastic pollution monitoring: Insights from Mytilaster lineatus and Amphibalanus improvisus

The role of organisms’ size in microplastic pollution monitoring: Insights from Mytilaster lineatus and Amphibalanus improvisus
Marine organisms can serve as valuable bioindicators, providing insights into the spatial and temporal distribution of microplastics (MPs) in aquatic environments. While barnacles and mussels have shown promise as bioindicators of MP pollution in coastal environments, recent studies have questioned the efficacy of bivalves in this role. To address this, our research investigated the suitability of Mytilaster lineatus and Amphibalanus improvisus as biomonitors of MP pollution in the Caspian Sea through a comprehensive survey of these filter-feeding organisms. Sediment, seawater and organisms samples were collected from 9 stations during July to September 2022. MPs were detected in all compartments with an average of 0.57 ± 0.59 items/L for water, 72.66 ± 29.29 items/kg dry weight for sediment, 1.69 ± 0.79 items/individual or 7.96 ± 3.231 items/g wet weight (ww) for M. lineatus and 1.8 ± 0.9 items/individual or 35.18 ± 35.33 items/g ww for A. improvisus. MPs were prevailed by class 1000−3000 μm in size, black in color, fiber in shape and polyamide in polymer. The pollution load index (PLI) for seawater and sediment stations were 2.11 and 2.22, respectively, confirm low level risk of MP pollution at the sampling stations. There was a positive correlation between the MP abundance isolated from seawater and those extracted from the small species (p < 0.05). Bioconcentration factor (BCF) exhibited that both organisms absorbed and accumulated MPs from their surrounding water (BCF >1). A negative correlation was detected between the number of MPs extracted from organisms and their soft tissues (p < 0.01). Therefore, smaller individuals of M. lineatus and A. improvisus showed greater potential for biomonitoring. Our findings underscore the importance of species size in assessing MP pollution using biomonitors and recommend that future studies incorporate size-related variables for a more comprehensive understanding of MPs biomonitors.
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来源期刊
Marine environmental research
Marine environmental research 环境科学-毒理学
CiteScore
5.90
自引率
3.00%
发文量
217
审稿时长
46 days
期刊介绍: Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.
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