Assesing heavy metals in the marine bivalve Pinna nobilis in the Balearic Islands (western Mediterranean)

Heavy metals (Cd, Cu, Hg, Pb and Zn) concentration were determined in the marine bivalve Pinna nobilis along the Balearic Islands, comparing a protected area with two sites with strong anthropogenic influence. Analyses of Cabrera and Mallorca indicated that heavy metal concentration were generally higher in the most of samples, specially in Santa Maria bay (Cabrera, MPA), and Magaluf (Mallorca, with strong anthropogenic influence). Pinna nobilis appears to efficiently bioaccumulate heavy metals exhibiting large differences in a range of anthropic scenarios. The results on P. nobilis metal accumulation show that the concentrations decrease according to order: Zn > Cu >Pb> Cd > H