Study The Effect of Reducing the Toxicity of Oil Pollution by Crude Oil-Degrading Bacteria Symbiotic with the Gastropod Isolated From the Persian Gulf on the Quality of Seafood

The Persian Gulf is the most important marine environment in the world. Because annually about 25000 oil tankers transfer in this Gulf and oil spill and pollution are so much in this area. The relationship between marine animals and degrading bacteria not well understand. The aim of this study is the characterization of symbiont crude oil-degrading bacteria in some Gastropods in the Persian Gulf. Gastropods were collected from five stations at the Persian Gulf. Symbiont crude oil-degrading bacteria were isolated from collected Gastropod by enrichment in ONR7a medium after 4 subcultures. The isolated bacteria were identified by biochemical and molecular methods. The effect of reducing the toxicity of heavy metals and the total amount of petroleum hydrocarbons on farmed fish and shrimp meat was investigated by decomposing bacteria. The degradation of crude oil was determined by spectrophotometry methods for each strain. In this study, 2 crude oil-degrading bacteria IAUK3585, IAUK3586 were isolated from Gastropod. The efficient strain that had the Thalassospira profundimaris and strain IAUK3586 the efficient strain that had the highest crude oil degradation belonged to genera. The results of reducing the toxicity of heavy metals and the total amount of petroleum hydrocarbons proved that the total amount of petroleum hydrocarbons and heavy metals in the pond with decomposing bacteria compared to the pond without decomposing bacteria and oil contamination and the pond without any These conditions were significantly reduced. This result proves that the decomposing bacteria that coexist with the abdomen have a significant effect on increasing the quality of fish and shrimp meat.