论文
论文标题: Habitual feeding patterns impact polystyrene microplastic abundance and potential toxicity in edible benthic mollusks
作者: Wang, Senyang; Zheng, Liang; Shen, Mengyan; Zhang, Longsheng; Wu, Yiting; Li, Guangyu; Guo, Chuanbo; Hu, Cunzhi; Zhang, Mingming; Sui, Yanming; Dong, Xuexing; Lv, Linlan
出版刊物: SCIENCE OF THE TOTAL ENVIRONMENT
出版日期: MAR 25
出版年份: 2023
卷/期:
DOI: 10.1016/j.scitotenv.2022.161341
论文摘要: That increasing microplastics (MPs, <5 mm) eventually end up in the sediment which may become a growing menace to diverse benthic lives is worthy of attention. In this experiment, three edible mollusks including one deposit-feeding gastropod (Bullacta exarate) and two filter-feeding bivalves (Cyclina sinensis and Mactra veneriformis) were exposed to polystyrene microplastic (PS-MP) for 7 days and depurated for 3 days. PS-MP numbers in the digestive system and non digestive system, digestive enzymes, oxidative stress indexes, and a neurotoxicity index of three mollusks were determined at day 0, 3, 7, 8 and 10. After seven-day exposure, the PS-MP were found in all three mollusks' digestive and non-digestive systems. And PS-MP in M. veneriformis (9.57 +/- 2.19 items/individual) was significantly higher than those in C. sinensis (3.00 +/- 2.16 items/individual) and B. exarate (0.83 +/- 1.07 items/individual) at day 7. Threeday depuration could remove most of the PS-MP in the mollusks, and higher PS-MP clearance rates were found in filter-feeding C. sinensis (77.78 %) and M. veneriformis (82.59 %) compared to surface deposit-feeding B. exarate (50.00 %). The digestive enzymes of B. exarate significantly reacted to PS-MP exposure, while oxidative responses were found in C. sinensis. After three-day depuration, the changes of digestive enzymes and the oxidative states were fixed, but neurotoxicity induced by PS-MP was not recoverable. Besides, it is noteworthy that changes of digestive enzymes and acetylcholinesterase are related to feeding patterns.
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  • 中国科学院藻类生物学重点实验室
  • 农业部淡水养殖病害防治重点实验室
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  • 中国动物学会原生动物学分会
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  • 中国鱼类学会
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  • 水生生物博物馆
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