Fluoride retention after dietary fluoride exposure in Siberian sturgeon Acipenser baerii

Authors

  • Xiaotao Shi,

    1. Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, China
    Search for more papers by this author
  • Ruifang Wang,

    1. East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
    Search for more papers by this author
  • Ping Zhuang,

    Corresponding author
    1. East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
    • Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang, China
    Search for more papers by this author
  • Longzhen Zhang,

    1. East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
    Search for more papers by this author
  • Guangpeng Feng

    1. East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
    Search for more papers by this author

Correspondence: P Zhuang, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China. E-mail: pzhuang@online.sh.cn

Abstract

This study evaluated the uptake of fluoride ions (F) in tissues of juvenile Siberian sturgeon (Acipenser baerii). Fish were fed diets containing 75.2 (Control), 162.6, 360.8, 710.2, 1478.3 mg F kg−1 in triplicate for 12 weeks with F added as NaF. Growth was inhibited in fish fed diets with 710.2 or 1478.3 mg F kg−1, but was not inhibited in fish fed diets with 162.6 or 360.8 mg F kg−1. The F concentration in scute, cartilage, skin and gill increased with time and dietary F concentration, and with the order of concentration at the end of the experiment, highest to lowest levels: scute (7721.3 mgF kg−1), cartilage (2324.2), gill (721.4) and skin (262.5). Muscle, liver, gut and pylorus did not accumulate F with increasing F level in the diet. Thus, F up to 360.8 mg F kg−1 can be included in the Siberian sturgeon diet without an adverse effect on growth or survival. The F as low as 162.6 mg F kg−1 in diet increased F concentrations in scute and cartilage, and the high concentration of F in cartilage is possibly a danger to the consumption of cartilage in sturgeon.

Ancillary