Figure 1

Mean (±S.D.) element concentrations (a–d) in organs of barbels and in its parasites Pomphorhynchus laevis and Eustrongylides sp. *Concentrations are not displayed, as they were below the detection limit
Mean (±S.D.) element concentrations (a–d) in organs of barbels and in its parasites Pomphorhynchus laevis and Eustrongylides sp. *Concentrations are not displayed, as they were below the detection limit