Seasonal and sexuality variation of mercury concentrations in selected tissues of blue swimming crab, Portunus pelagicus (Linnaeus, 1758) and sediments from south Iran Persian Gulf.

摘要

Persian Gulf supports diverse ecosystems and biota in need of remediation and protection and metal data from this region is needed. The levels of mercury (Hg) in tissues of blue swimming crab, Portunus pelagicus and sediments in the Persian Gulf coasts, south Iran were investigated. Hg analysis was performed by Atomic Absorption Spectrophotometer. The distribution pattern of Hg in the tissues of P. palagicus and sediments was as follows: sediment > hepatopancreasn > muscle > exoskeleton. Total mercury levels in the tissues of P. palagicus from the other six sampling stations ranged between (4.70+or-0.80 micro g/g) and (0.11+or-0.34 micro g/g). In present study recorded that there was negligible differences in Hg levels between P. pelagicus sexes. Maximum concentration of the total Hg in sediments and all tissues of P. pelagicus observes in Bahrekan station (p<0.05) during different seasons. There was no significant difference (p<0.05) between the level of Hg in the tissues of the crab P. pelagicus. Differences in Hg levels could have resulted from diverse pollution source, ecological particularity, industries and human activities.