Aquatic sediments are predicted to be an important sink for released silver nanoparticles (AgNPs). Knowing the long-term effects of AgNPs on benthic deposit-feeders is therefore an important step towards assessing their potential environmental risks. The aim of this study was to examine the effects on survival, growth and reproduction of the deposit-feeding polychaete Capitella teleta exposed for ten weeks to sediment-associated un-coated AgNPs or silver nitrate (AgNO₃). C. teleta exhibited tolerance towards exposure to both AgNPs and AgNO₃. Significant effects were observed for percentage of pairs that reproduced as well as worm growth after eight weeks, but the effects did not show a clear concentration- or Ag type-dependent pattern. Further investigations of long-term effects of un-coated AgNPs in additional sediment-dwelling organisms are needed and should involve comparisons to coated AgNPs.

预计水生沉积物是释放银纳米粒子 (AgNPs) 的重要汇。因此，了解 AgNPs 对底栖沉积物喂食器的长期影响是评估其潜在环境风险的重要一步。本研究的目的是检查暴露于沉积物相关的未涂覆的 AgNPs 或硝酸银 (AgNO ₃ )十周对沉积物摄食的多毛类Capitella teleta的生存、生长和繁殖的影响。C. teleta对暴露于 AgNPs 和 AgNO _{3均表现出耐受性}. 八周后，对复制的对百分比以及蠕虫的生长都观察到了显着影响，但这些影响并未显示出明显的浓度或 Ag 类型依赖性模式。需要进一步研究未涂覆的 AgNPs 在其他沉积物栖息生物中的长期影响，并应涉及与涂覆的 AgNPs 的比较。