From Past Use to Present Effects: Total Mercury in Crustaceans and Fish in the Inner Estuary of Paraíba do Sul River, Southeast Brazil

A study of trophic structure, physiological condition and mercury biomagnification in swordfish (Xiphias gladius): Evidence of unfavourable conditions for the swordfish population in the Western Mediterranean

“…Mercury contamination was found throughout all of the Catalan swordfish prey groups: crustaceans, cephalopods, epi-and bathypelagic teleosts. The THg concentrations found in these organisms were within the range of other studies (Cardoso et al, 2019;Morrison et al, 2015;Minet et al, 2021;Di Beneditto et al, 2021) and were significantly positively correlated to both δ 15 N and δ 13 C. Correlations have also been found by McCormack et al (2020) between THg and δ 13 C, and by Seco et al (2021) between THg and δ 15 N in other top predators. Their importance as a source of food means that cephalopods contribute significantly to the swordfish's mercury intake, not only because of the frequency of consumption and the quantity ingested (individuals are often swallowed whole), but also because of the fairly high levels of mercury recorded in some species of cephalopods (Storelli et al, 2006).…”