Accumulation and elimination of cadmium and lead in juvenile milkfish during sublethal exposure

Evidence of maternal copper and cadmium transfer in two live-bearing fish species

“…However, the difference in metal levels between offspring of metal-exposed females and those of control females was much more pronounced for cadmium than it was for copper in both species. These differences probably reflect the fact that copper is efficiently acquired at low levels and regulated at low and intermediate levels (Kamunde et al 2002;Kanakaraju et al 2009)-while neither seems to be the case for the non-essential cadmium (Hinkle et al 1987;Biuki et al 2011). This study focused on only one essential and one non-essential metal, so it is unclear whether the observed differences between copper and cadmium are generalizable to other essential and non-essential metals.…”

White Rot Fungus (Pleurotus pulmonarius) Cultivated on Lead Contaminated Rice Straw Induced Haematotoxicity and Lead Accumulation in Liver and Kidney of Wistar Rats

“…Increase BAF of Pb 2+ in the kidney of treated rats corroborated the higher Pb bioaccumulation in the kidney. Since the BAF value of Pb in the liver was less than 1 for virtually all the concentrations of the Pb contaminated P. pulmonarius treated rats except 10 mg/L, it is described as transferred factor (TF) [47]. The body burden of bioaccumulated Pb in the mushroom induced decrease terminal body weight and decrease absolute and relative kidney and liver weight gain in the treated rats.…”

Mining waste as a cause of increased bioaccumulation of highly toxic metals in liver and gills of Vardar chub (Squalius vardarensis Karaman, 1928)

“…Similar bioaccumulation patterns were reported by several authors and for various fish species. For example, Biuki et al (2011) observed increases of Cd and Pb in the liver of juvenile milkfish (Chanos chanos) following the concentration increase of these pollutants; Casiot et al (2009) reported a twofold increase of Cd, a threefold increase of Tl and a sixfold increase of Pb in the liver of chub (L. cephalus) exposed to acid mine drainage of former Pb/Zn mine, whereas Monna et al (2011) reported three orders of magnitude greater hepatic Cd and Pb concentrations in brown trout (Salmo trutta fario) from mining influenced sites compared to those of commercial trout produced by fish farming. Increased Cd was also reported in the liver of S. cephalus from the contaminated site of the Sava River (Podrug et al, 2009), whereas increased Pb concentrations were found in both liver and gills of grass carp (C. idellus) from a freshwater ecosystem influenced by a copper mine (Liu et al, 2012) and of European chub (S. cephalus) from a Pb contaminated site of the Sutla River (Dragun et al, 2012).…”

“…All the other differences, although statistically significant, were much less pronounced. Such different accumulation levels of certain elements in different fish organs may be primarily caused by different metabolic activities of those organs (Biuki et al, 2011).…”

“…A special threat of mining effluents for surrounding aquatic ecosystems comes from the fact that they present a source of toxic metals, which, due to their toxicity, long persistence and tendency to bioaccumulate, pose a potential health risk for aquatic organisms and for humans from fish consumption (Liu et al, 2012;Zhuang et al, 2013). For example, Pb is a very toxic, nonessential element that occurs in a wide variety of minerals, and substantial amounts of Pb have been distributed into the environment from mine and metal smelters (Biuki et al, 2011). In North-Eastern Macedonia, there are several active Pb/Zn mines, which present a risk of metal contamination for local rivers.…”