International Journal of Agricultural and Natural Sciences

Yazarlar: Zeinab Ansari

Konular:

Anahtar Kelimeler:Barbatia helblingii,Heavy metal,Qeshm Island,Seasonal variation

Özet: The aim of present study was to survey Zn, Cu, Pb, Cd and Hg concentrations in shell of the bivalve, Barbatia helblingii, were sampled from the north of Qeshm Island (This Island located in Persian Gulf) in winter and spring season. The results show that the most concentrations were for Zn (6.1± 3.1) μg/g in winter and Pb (0.07±0.05) μg/g had the lowest concentration in spring. The pattern of metals accumulation in shell was as follow: Zn>Cu>Pb>Cd>Hg (in winter) and Zn>Cu>Pb>Cd>Hg (in spring). There is a significant negative relationship between the level of Cu and Cd metal in shell and all of the biometric parameters (P<0.05), however, no significant correlations were observed between Hg and Pb in the shell and the biometric parameters. Layer stratification of water of Persian Gulf, and its turn over, increasing phytoplankton and also the biologic factors as biometric characteristics variation were influenced the seasonal variation of metal concentrations, but portion of each factor was different.

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