Toxic Effects of Arsenic on Four Freshwater Aquatic Species and Its Transformation Metabolism in Crucian Carp (Carassius auratus)
文献类型： 外文期刊
作者： Tang, Shizhan 1 ; Gao, Lei 1 ; Qin, Dongli 1 ; Wang, Haitao 1 ; Huang, Li 1 ; Wu, Song 1 ; Bai, Shuyan 1 ; Du, Ningning 1 ; Sun, Yanchun 1 ; Wang, Peng 1 ; Chen, Zhongxiang 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin 150070, Peoples R China
2.Minist Agr & Rural Affairs, Supervis Inspect & Testing Ctr Fishery Environm &, Harbin 150070, Peoples R China
关键词： arsenic; freshwater aquatic species; toxicity; arsenic form; exposed; biotransformation
期刊名称：TOXICS （ 影响因子：4.6； 五年影响因子：4.8 ）
ISSN：
年卷期： 2024 年 12 卷 3 期
页码：
收录情况： SCI
摘要： Inorganic arsenic is a well-known carcinogen that is much more toxic than its organic counterpart. While much is known about the accumulation and transformation of arsenic in marine organisms, little is known regarding these processes in freshwater aquatic species. In this study, the acute toxicity and toxicological effects of inorganic arsenic on four freshwater organisms (Cyprinus carpio, Misgurnus anguillicaudatus, Pseudorasbora parva, Eriocheir sinensis) commonly found in rice-fish farming systems were investigated. The organisms exhibited different levels of sensitivity to inorganic arsenic, with crustaceans being more sensitive than fish. Fish were found to be more tolerant to As(V) than As(III). The study also investigated the accumulation, transformation, and release of inorganic arsenic in crucian carp, an omnivorous species with high environmental tolerance. The fish accumulated As(III) rapidly in various tissues, and were able to transport it to other tissues through gills, intestines, and skin. The accumulated As(III) was converted into less toxic forms, such as monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA), via methylation. The fish also converted As(III) into arsenate (AsV) via enzymatic and oxidative reactions. After the transferal to clean water, the forms of arsenic in the various tissues decreased rapidly, but the rates of excretion of the four forms of arsenic were not the same among the different tissues. Our results suggest that crucian carp can reduce the environmental toxicity of As(III) at certain concentrations by transforming it into less toxic forms within their bodies.
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