Mercury and methyl mercury concentration in sediment, benthic, Barbus Grypus and pelagic, Barbus esocinus fish species, from Musa estuary, Iran


1 Department of Marine Ecology, Khoramshahr University of Marine Science and Technology, Khoramshahr, Iran

2 Department of Marine Biology, Faculty of Biological Science, Shahid Beheshti University, Tehran, Iran


The concentrations of mercury (Hg) and methyl mercury (MeHg) in sediment and tissues of Barbus grypus and Barbus esocinus fish species from Musa estuary, north part of the Persian Gulf, were measured. The order of Hg and MeHg concentrations in the sediment and tissues of the fish species was as follows: liver > gill > muscle > sediment. In the tissues of two fish species, the Hg and MeHg concentrations were highest in liver whereas lowest in the muscle. In the sediment, mean concentrations of Hg and MeHg were 0.83 and 0.437 µg g−1. Mean concentrations of Hg and MeHg in B. grypus were 1.2–0.624 µg g−1 and in all tissues of B. esocinus were 0.75 and 0.421 µg g−1. Significant correlation between heavy metal concentration in sediment and fish may be related to high variability of heavy metal in the sediment.