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| Bioaccumulation characteristics of 20 elements between Anodonta woodiana and Lamprotula leai |
| Received:May 19, 2023 |
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| KeyWord:Anodonta woodiana;Lamprotula leai;biodiversity conservation;element bioaccumulation |
| Author Name | Affiliation | E-mail | | CHEN Xiubao | Laboratory of Fishery Microchemistry, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | JIANG Tao | Laboratory of Fishery Microchemistry, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | LIU Hongbo | Laboratory of Fishery Microchemistry, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | | | YANG Jian | Laboratory of Fishery Microchemistry, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China | jiany@ffrc.cn |
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| Abstract: |
| To effectively protect Chinese freshwater mussels, essential elements including the major elements Na, Mg, K, and Ca and trace elements of Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, and Mo, and non-essential/toxic elements, that is, Al, As, Sr, Cd, Ba, Tl, Pb, were investigated in Anodonta woodiana and Lamprotula leai. A. woodiana is endemic to China. L. leai has been newly listed as Class II priority wildlife. Both mussel resources have been sharply reduced. Element accumulation correlation analysis and accumulation evaluation were performed. The results have shown that concentrations of essential elements Se and Mo were significantly higher in A. woodiana than those of L. leai. Meanwhile, concentrations of Na, K, and Cr were significantly lower than those of L. leai(P<0.05). Concentrations of non-essential/toxic elements Al, As, Sr, and Cd were significantly higher in A. woodiana than that in L. leai(P<0.05). There were significant correlations between 37 and 34 pairs of elements in A. woodiana and L. leai, respectively. Among them, Mg-Mo, Ca-Mn, Ca-Zn, Mn-Zn, Ca-Sr and Mo-Sr showed significant positive correlations in both mussels(P<0.05). Meanwhile, Mg-Al and Fe-Tl showed significant negative correlations(P<0.05). The element accumulation indices(EAI)in A. woodiana and L. leai were 3.7 and 3.2, respectively. The residual indices(RI)of inorganic As, Cd, and Pb for both mussels ranged from 0.2 to 39.1. The RI of Cd was significantly higher in A. woodiana than that of L. leai(P<0.05). These findings suggest that the element accumulation capacity of A. woodiana is generally stronger than that of L. leai, and their resources are affected by elements such as Cd, Pb, As, Al, and Tl. |
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