The use of feathers in monitoring bioaccumulation of metals and metalloids in the South African endangered African grass-owl (Tyto capensis).

摘要: Few studies have quantified metals in South African species and no published data on residues specifically owl feathers exist. Tyto capensis is listed as vulnerable within Africa, making it preferable to use a non-invasive technique determine metal bioaccumulation for this species. Comparisons are made with the cosmopolitan T. alba whether could be used surrogate. Concentrations of various were thus determined two compared liver muscle samples. Samples taken from 119 owls collected road kill along national road. A comparison concentrations revealed similarly higher aluminium, antimony, lead, nickel, strontium, whereas chromium, copper, iron, manganese, selenium, titanium zinc internal tissues both Metal comparable those reported literature below toxic levels, suggesting that these not likely impact owls. Further regressions between corresponding livers examined if indicative burdens. Significant positive relationships found nickel vanadium manganese capensis. Preliminary results support feasibility using non-destructive indicators environmental contamination although caution needs when interpreting results.