卤水虾
微塑料
甲壳动物
生物
过氧化氢酶
浮游生物
小虾
动物
海洋生态系统
生态学
酶
生态系统
生物化学
作者
Chiara Gambardella,Silvia Morgana,Sara Ferrando,Mattia Bramini,Veronica Piazza,Elisa Costa,Francesca Garaventa,Marco Faimali
标识
DOI:10.1016/j.ecoenv.2017.07.036
摘要
Plastic debris accumulates in the marine environment, fragmenting into microplastics (MP), causing concern about their potential toxic effects when ingested by marine organisms. The aim of this study was to verify whether 0.1µm polystyrene beads are likely to trigger lethal and sub-lethal responses in marine planktonic crustaceans. MP build-up, mortality, swimming speed alteration and enzyme activity (cholinesterases, catalase) were investigated in the larval stages of Amphibalanus amphitrite barnacle and of Artemia franciscana brine shrimp exposed to a wide range of MP concentrations (from 0.001 to 10mgL-1) for 24 and 48h. The results show that MP were accumulated in crustaceans, without affecting mortality. Swimming activity was significantly altered in crustaceans exposed to high MP concentrations (> 1mgL-1) after 48h. Enzyme activities were significantly affected in all organisms exposed to all the above MP concentrations, indicating that neurotoxic effects and oxidative stress were induced after MP treatment. These findings provide new insight into sub-lethal MP effects on marine crustaceans.
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