Bioaccumulation of Heavy Metals in Freshwater Fish Species, Anzali, Iran

Abstract

The main objectives of study were to monitor the metals concentrations, in freshwater fish species, Carassius gibelio and Esox lucius; and to identify any relationships between species and bioaccumulation of metals. The highest concentration of metals (cadmium, 1.96; copper, 24.2; zinc, 49.6; lead, 5.4; chromium, 4.4) between the fish species and tissues was in the liver of Esox lucius, while the lowest (cadmium,0.21; copper,7.2; zinc,19.4; lead,0.9; chromium,0.6 μg/g) found in the muscle of Carassius gibelio. Results showed that the metal concentrations were in fishes in descending order of zinc > copper > lead > chromium > cadmium, similarly in the tissue liver > kidney > gill ~ intestine > muscle.

Seasonal Variations and Health Risk of Heavy Metals in the Muscle of Crucian Carp (Carassius auratus) Cultured in Subsidence Ponds near Suzhou, East-Central China

“…The Pb concentration (0.20 mg/kg) of this study was lower than the literature values (Milošković et al 2013;Ebrahimpour et al 2011;Chi et al 2007;Zhuang et al 2013;Zhang et al 2015), except Kadi lake (0.05 mg/kg) (Syasina et al 2012). Mn concentration (0.99 mg/kg) in this study was also lower than fishes from Gruza Reservoir (1.23 mg/kg) (Milošković et al 2013) and Nansi lake (2.3 mg/kg) (Zhang et al 2015), but higher than from Kadi lake (0.64 mg/kg) (Syasina et al 2012).…”

“…The reported level of Zn (28.47 mg/kg) in the present study was approximately similar to that from Cuciurgan Reservoirs (28.5 mg/kg) (Zubcov et al 2012), but higher than reported by Syasina et al (2012), Ebrahimpour et al (2011), Petkovšek et al (2012, and Zhuang et al (2013) that from Kadi lake (10 mg/kg), Anzali Wetland (19.4 mg/ kg), Šalek lake (6.71 mg/kg)and Dabaoshan (13.5 mg/kg), respectively. However, Zn level in this study was considerably lower than reported by Chi et al (2007) from Taihu Lake (130 mg/kg) and Zhang et al (2015) from Nansi lake (87.4 mg/kg).…”

“…Reported results in the literature showed that metal contents in fish muscle of C. auratus varied widely depending on location and its growing environment. Concentration of Cd (0.04 mg/kg) in the fish muscle of this study was lower than reported levels of fishes from Dabaoshan metal mine (0.1 mg/kg) (Zhuang et al 2013), Anzali Wetland (0.29 mg/kg) (Ebrahimpour et al 2011), and similar with the level from Nansi lake (\0.05 mg/kg) (Zhang et al 2015), but higher than that from Kadi lake (0.023 mg/kg) (Syasina et al 2012), Gruza Reservoir (0.008 mg/kg) (Zubcov et al 2012), Taihu Lake (0.013 mg/kg) (Chi et al 2007), and Š alek lake (0.01 mg/ kg) (Petkovšek et al 2012).…”

“…The Cr level (1.15 mg/kg) in this study was considerably higher than the reported levels from Anzali Wetland (0.7 mg/kg) (Ebrahimpour et al 2011) and Taihu Lake (0.387 mg/kg) (Chi et al 2007), but close to that from Nansi lake (1.7 mg/kg) (Zhang et al 2015), thus indicating Cr enrichment in fish muscle.…”

Bioaccumulation and elimination rate of cobalt in Capoeta fusca under controlled conditions

“…Target organs, such as the liver have a tendency to accumulate heavy metals in high concentrations, as shown in many species of fish in different areas: in Liza abu and Silurus triostegus in Atatürk Dam Lake (Karadede et al, 2004), in Scardinus erythrophthalmus in Karataº Lake (Kır et al, 2006), in Cyprinus carpio in Beyºehir Lake (TekinÖzan and Kır, 2007), and in Barbus capito pectoralis and Chondrostoma nasus in Büyük Menderes River (Koca et al, 2008). Liver tissues have been reported to be the main site of heavy metal detoxification within fish (Ebrahimpour et al, 2011). This might be due to the capability of liver to accumulate various kinds of pollutants at concentrations higher than those of the environment (Licata et al, 2005).…”