مقايسه تجمع زيستي سرب و روي در بافت عضله ماهي شير (Scomberomorus commerson) و قباد (Scomberomorus guttatus) در بندر بوشهر

A comparison of bioaccumulation Lead and Zinc in muscle tissues of Scomberomorus commerson and Scomberomorus guttatus in Bushehr seaport

اين تحقيق با هدف اندازه گيري غلظت فلزات سنگين سرب و روي در بافت عضله دو گونه ماهي شير (Scomberomorus commerson) و قباد (Scomberomorus guttatus) در بندر بوشهر در تابستان سال 1394 انجام پذيرفت. تعداد 20 قطعه ماهي شير و 20 قطعه ماهي قباد به صورت كاملا تصادفي از بندر بوشهر به وسيله تور گوش گير صيد گرديد. بعد از زيست سنجي، بافت عضله نمونه ها جداسازي و هضم شيميايي نمونه ها انجام شد و با استفاده از دستگاه جذب اتمي كوره گرافيتي ميزان غلظت فلز سرب و روي در عضله اندازه گيري گرديد. بر اساس نتايج به دست امده ميانگين غلظت سرب در بافت عضله ماهي شير و قباد به ترتيب 0.349±0.173 و 0.384±0.132 ميلي گرم در كيلوگرم وزن خشك محاسبه شد و اختلاف معني-داري را نشان نداد (P>0.05). همچنين بر اساس نتايج به دستامده ميانگين غلظت روي در بافت عضله ماهي شير و قباد به ترتيب 35.1±11.855 و 40.8±11.988 ميلي گرم در كيلوگرم وزن خشك محاسبه شد و اختلاف معني داري را نشان نداد (P>0.05). نتايج اين مطالعه نشان داد كه غلظت فلز سنگين سرب در بافت عضله ماهي شير و قباد پايين تر از حد مجاز استانداردهاي WHO، FAO، NHMRC و MAFF بود. اما غلظت فلز سنگين روي در عضله ماهي شير و قباد از حد مجاز استاندارد FAO بالاتر و از حد مجاز استانداردهاي WHO، NHMRC و MAFF پايين تر بود. بنابراين انجام مطالعات تكميلي براي بررسي تاثيرات احتمالي مصرف اين ماهيان بر سلامت انسان ضروري به نظر مي رسد.

This study was carried out to measure the concentrations of heavy metals of Lead and Zinc in muscle tissues of two species of (Scomberomorus commerson) and (Scomberomorus guttatus) in Bushehr seaport during summer 2015. 20 samples of Scomberomorus commerson and 20 samples of Scomberomorus guttatus were caught randomly from Bushehr seaport by using a gillnet. After biometry of the samples, the muscle tissues were separated and chemical digestion was done, then Lead and Zinc accumulation levels in muscles were measured using Graphite furnace atomic absorption instrument. Based on the obtained results the mean concentrations of Lead in muscle tissues of Scomberomorus commerson and Scomberomorus guttatus were calculated 0.349 ± 0.173 and 0.384 ± 0.132 mg/kg dry weight respectively and showed that there were no significant differences (P>0.05). Moreover, based on the obtained results the mean concentrations of Zinc in muscle tissues of Scomberomorus commerson and Scomberomorus guttatus were calculated 35.1 ± 11.855 and 40.8 ± 11.988 mg/kg dry weight respectively and showed that there were no significant differences (P>0.05). The results of this study revealed that the Lead metal concentration in muscle tissues of Scomberomorus commerson and Scomberomorus guttatus are lower than the levels permitted within the standards of World Health Organization (WHO), Food and Agricultural Organization (FAO), National Health and Medical Research Council (Australia) (NHMRC) and Ministry of Agriculture, Forestry and Fisheries (MAFF) but the Zinc metal concentration in muscle tissues of Scomberomorus commerson and Scomberomorus guttatus are higher than the levels permitted within the standards of Food and Agricultural Organization (FAO), and lower than the levels permitted within the standards of World Health Organization (WHO), National Health and Medical Research Council (Australia) (NHMRC) and Ministry of Agriculture, Forestry and Fisheries (MAFF). Therefore, additional researches are needed to evaluate any potential effluence of this fish consumption on human health.