بررسی ارتباط وزن و طول کل با میزان تجمع فلزات سرب و کادمیم در بافت عضله جنس نر و ماده ماهی سرخوی معمولی (lutjanus johnii, bloch, 1792) (آب های ساحلی استان هرمزگان)

مقدمه: برخی از فلزات سنگین مانند کادمیوم و سرب در متابولیسم طبیعی آبزیان هیچ نقشی نداشته و این فلزات حتی در غلظت‌های پایین نیز برای موجودات زنده سمی هستند. این تحقیق به منظور مطالعه تاثیر اندازه بدن (طول کل و وزن کل) بر میزان تجمع غلظت عناصر سرب و کادمیوم در ماهی سرخوی معمولی (lutjanus lohni) در سه منطقه بندرعباس، بندرلنگه و جاسک در استان هرمزگان انجام گردید.مواد و روش ها: تعداد نمونه در هر ایستگاه به طور مجزا نمونه برداری شد که در آزمایشگاه پس از زیست سنجی، بافت عضله تفکیک و فلز سرب و کادمیوم به روش هضم شیمیایی استخراج و غلظت آن ها توسط دستگاه جذب اتمی خوانده شد.نتایج: نتایج حاصل از تحقیق نشان داد که غلظت عناصر سرب و کادمیوم در بافت عضله ماهی سرخو در سه منطقه بندرجاسک، بندرعباس و بندرلنگه با اندازه بدن (طول و وزن بدن) ضریب همبستگی پیرسون منفی (r) و معنی داری ندارد (0.05

the relationship between weight and total length with accumulation of leadand cadmium metals in muscle tissue of male and female common ferrousfish (lutjanus johnii, bloch, 1792)(coastal water of hormozgan province)

introduction: some heavy metals such as cadmium and lead have no role in the naturalmetabolism of aquatic animals and these metals are toxic to living organisms even at lowconcentrations. this study was conducted to study the effect of body size (total length and totalweight) on the accumulation of lead and cadmium in common redfish (lutjanus lohni) in threeregions of bandar abbas, bandar lengeh and jask in hormozgan province.materials & methods: the number of samples in each station was sampled separately. in thelaboratory, after bioassay, muscle tissue was separated and lead and cadmium were extractedby chemical digestion and their concentrations were read by atomic absorption spectrometry.results: the results of the study showed that the concentration of lead and cadmium in themuscle tissue of redfish in three areas of bandar jask, bandar abbas and bandar lengeh withbody size (body length and weight) had a negative pearson correlation coefficient (r) and wassignificant (p>0.05). the results of tissue analysis of common red fish muscle in the study areashave the highest and lowest concentrations of lead metal equal to 0.2686+0.1 and 0.550+0.1μg/g and for cadmium metal, respectively. it was shown with 0.021+0.01 and 0.057+0.01 μg/g.the results also show that the jask port area is significantly different from bandar abbas andbandar lengeh areas in terms of the amount of lead and cadmium elements in muscle tissue(p>0.05).conclusion: it can be concluded from the data of this study that in the study areas in the persiangulf (bandar abbas, bandar lengeh and jask) a very weak relationship between the body sizeof the studied species has been shown. the trend of accumulation of the studied elements inordinary redfish has not affected the sex (male or female) and also the contamination of theseelements in the present study has been less than the international standards reported.