Cadmium bioaccumulation and elimination in tissues of the freshwater mussel Anodonta woodiana. (March 2019)

• Record Type: Journal Article
• Authors: Jing, Weixin; Lang, Lang; Lin, Zigen; Liu, Na; Wang, Lan
• Is Part Of: Chemosphere. Volume 219(2019)
• Page Start: 321
• Page End: 327
• Publication Date: 2019-03
• Subjects: Freshwater mussel watch -- Anodonta woodiana -- Tissues -- Bioaccumulation -- Elimination -- Cadmium; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2018.12.033
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Experiments were carried out to investigate the bioaccumulation and elimination of cadmium (Cd) in tissues (kidney, gills, digestive gland, mantle, visceral mass, foot, adductor muscle and hemolymph) from the freshwater mussel, Anodonta woodiana . The mussels were exposed to subchronic Cd at concentrations of 0.168 and 0.675 mg L −1 for 28 d of bioaccumulation and 28 d of elimination. During the bioaccumulation phase, Cd bioaccumulations increased in all tissues. The highest bioaccumulation of Cd was found in the kidney. The second-highest and third-highest bioaccumulations of Cd were found in the digestive gland and gills, respectively. The Cd bioaccumulations in the tissues of A. woodiana increased with exposure time and concentration, except for hemolymph, which reached the highest value on d 14. The bioaccumulation factors (BCFs) increased with exposure time, but an inverse relationship was observed between BCFs and exposure concentration. During the elimination phase, the visceral mass showed the highest Cd elimination rate. In the kidney, digestive gland and gills, the elimination rates almost reached 40%, but their concentrations were still higher than in other tissues. Thus, we concluded that the kidney, gills and digestive gland of A. woodiana are target tissues for subchronic Cd toxicity. Highlights: The kidney, gills and digestive gland of Anodonta woodiana are the target tissues for subchronic Cd toxicity. Cd accumulation in the gills can reflect short-term Cd pollution. Cd accumulation in the kidney and digestive gland indicate longer Cd exposure. The gills and mantle of A. woodiana are important tissues that contribute to Cd elimination.