Environmental cadmium and zinc concentrations in liver and kidney of European hare from different Serbian regions

Abstract

The hares assayed (n=84) were divided into five age groups: 3-6; 12; 12-24; 24-36 and 36 + months. Between all sampling regions (11) significant differences of Cd levels were found in kidney and liver (p value, p=0.001 and 0.007, respectively) . Significant statistical differences (p=0.001) are registered between Cd content in kidney and liver of hares among all represented age groups. Looking at all investigated hare samples, moderately higher concentrations of Zn were found in liver (median value: 25.4 mg/kg w.w) compared to those in kidney (21.4 mg/kg). These differences were statistically significant (p=0.001). Zinc concentrations in liver, between all age groups, did not differ significantly (p=0.512) but in kidney these differences were statistically significant (p=0,001). Significant differences between Zn concentrations in liver in comparison to kidney (pairwise differences) were found within every single age group with exception of the oldest (36+ ) . Strong statistically significant correlations (Ps- Pearson's correlation ) between Cd concentrations in kidney and liver were registered in three groups older than 12 months (Ps=0.81, p=0.001; 0.78, p=0.001; and 0.79, p=0.001, respectively). Negative correlation between Zn and Cd concentrations were found in liver samples within the age group of 12 months (Ps= -0,67, p=0.004)

Heavy Metals (As, Cd, Hg and Pb) in Hare Tissues: A Survey

“…They found significant differences in Cd levels in the kidney and liver between all age groups. The Cd concentration ratio in the kidney in relation to the liver increases with age in all age groups, and Cd concentrations in the kidney were positively correlated with concentrations in the liver (Petrović et al, 2013;Ahmed et al, 2016).…”

“…The highest Cd concentrations in hare kidney were recorded in Canada (Pedersen and Lierhagen, 2006) and in Poland's Lesser Poland ( Małopolska) province (Wajdzik, 2006;Halecki et al, 2017;Wajdzik et al, 2017). Similar Cd concentrations were established in hares in Finland (Venäläinen et al, 1996), Czech Republic (Bukovjan et al, 1997), Slovakia (Toman and Massányi, 1996;Massányi et al, 2003), and Serbia (Petrović et al, 2013). The lowest concentrations were recorded in the tissues of the Iberian hare in Spain (Fidalgo et al, 2016).…”

“…-max. ), l -polluted location, 2 and 3 -less polluted location, *** -specimens collected throughout the year p -zagađeno, u -nezagađeno, A -adultni zečevi, J -juvenilni zečevi, bdl -ispod limita detekcije, * -koncentracije u mg/kg suhe mase, ** -medijan (min-max), 1 -zagađena lokacija, 2 i 3 -manje zagađena lokacija, *** -uzorci prikupljeni kroz cijelu godinu Cd accumulation in hare tissues according to age groups was examined by Petrović et al (2013). They found significant differences in Cd levels in the kidney and liver between all age groups.…”