بررسی تجمع‌زیستی فلزات سنگین در رسوبات و بافت ماهیچه‌ای گل‌خورک یال‌دار (boleophthalmus dussumieri) در سواحل خوزستان، خلیج فارس

نیاز روز افزون انسان به منابع غذایی دریایی و ورود آلودگی های مختلف از جمله فلزات سنگین به منابع دریایی یکی از چالش های مهم به شمار می‌آید. در این پژوهش، بررسی غلظت فلزات سنگین در بافت ماهیچه‌ای ماهی گل‌خورک یالدار و رسوبات سواحل خوزستان مورد مطالعه قرار گرفت. نتایج نشان داد که بین غلظت فلزات کادمیم، روی، آهن تجمع‌یافته در بافت ماهیچه‌ای گل‌خورک در بین ایستگاه های مختلف اختلاف معنی‌دار وجود دارد (0.05>p)؛ اما بین غلظت فلزات آرسنیک، کادمیم، کروم، روی، نیکل، آهن در رسوبات ایستگاه‌های مختلف و غلظت آن‌ها در بافت ماهیچه ای گل‌خورک همبستگی معنی‌داری مشاهده نشد (0.05

bioaccumulation of heavy metals in sediments and muscle tissue of mudskipper (boleophthalmus dussumieri) in khuzestan coast, the persian gulf

the growing need for marine food resources and the entry of various pollutants, including heavy metals, into coasts and marines are major challenges humanbeings face with. for this purpose, in this study, the concentration of heavy metals in the muscle tissue of mudskipper and sediments of khuzestan coast was studied. the results showed that there was a significant difference between the concentrations of cadmium, zinc, and iron accumulated in the muscle tissue of mudskipper between different stations (p <0.05). but, there is no significant correlation between the concentrations of as, cd, cr, zn, ni, and fe in the sediments of different stations and their concentrations in the muscle tissue of mudskipper (p> 0.05). the average concentration of as, ni, and cd in muscle tissue were higher than the who global standard (2004, table 1). also, the average concentration of zn and fe in fish muscle tissue was lower than the standard. comparison of metal concentrations with the us environmental protection agency (usepa) (2004, table 2) showed that the concentration of ni in the sediments of different stations is in intense pollution (more than 40 ppm). based on other studies on this species, mudskipper can be considered as an indicator of contamination, and the results of this study also show the effect of contaminated areas on the accumulation of heavy metals in muscle tissue. therefore, it is better to undertake more studies to prevent the impact of pollutants, especially heavy metals on genetic erosion and the removal of this species from nature.