Effect of Copper, Zinc and Vanadium on Growth of Red Algae Gracilaria salicornia

Effect of Copper، Zinc and Vanadium on growth of Gracilaria salicornia were carried out over 21days under laboratory conditions. The macroalga was collected from coasts of Gheshm island in February 2012. For each treatment، the algae were inoculated into 20 litre water with diameters of 60×30×40 cm. The suspension method used for culture. All treatments (tanks) were carried out in triplicates. The length، width and weight of the thalli were measured on 2، 5، 7، 14، 21 days and relative growth was calculated. The results of this study showed significant differences on growth of G. salicornia between treatments (P<0. 05). Increased growth in low concentrations and reduce the high rate of the investigated metals shows that these metals initially as essential elements for the growth of the practice، and so increase the toxic effects too.