A COMPARATIVE STUDY ON THE ACCUMULATION OF SOME HEAVY METALS IN  BLUEFIN TUNA (Euthynnus alletteratus) AND  SARDINELLA (Sardinella aurita) IN THE COASTAL WATERS IN ZLITEN LIBYA

Ragab F. Al- Kazaghly; Hanan O. M. Altunsi; Keri A. Ighwela; Alkasm H. Shukshuk; Mahmoud M. Howas

doi:10.59743/jbs.v38i1.324

المؤلفون

رجب الكازغلي قسم علم الحيوان، كلية العلوم، الجامعة الاسمرية الاسلامية، زليتن، ليبيا
حنان التونسي قسم علم الحيوان، كلية العلوم، الجامعة الاسمرية الاسلامية، زليتن
خيري غويلة قسم الاحياء، كلية التربية، الجامعة الاسمرية الاسلامية، زليتن، ليبيا
القاسم شكشك قسم علم الحيوان، كلية العلوم، الجامعة الاسمرية الاسلامية، زليتن، ليبيا
محمود حواس قسم الكيمياء، كلية العلوم، جامعة المرقب، الخمس، ليبيا

DOI:

https://doi.org/10.59743/jbs.v38i1.324

الكلمات المفتاحية:

المعادن الثقيلة، التراكم الحيوي، Sardinella aurita، Euthynnus alletteratus، ساحل زليتن، ليبيا

الملخص

تعتبر المعادن الثقيلة من أهم ملوثات البيئة البحرية بسبب سميتها وقدراتها على التراكم في أجسام الكائنات الحية، هذه المعادن يمكنها ان تتراكم في أجسام الأسماك بكميات مختلفة وبالتالي يمكن ان يكون لها تأثير سلبي على صحة الانسان إذا استهلكت بكميات كبيره، ولذلك فإنه من المهم تقدير مستويات المعادن الثقيلة في الأسماك باستمرار. لهذا السبب فإن هدف هذه الدراسة هو فحص تراكيز بعض المعادن الثقيلة والتي تشمل النحاس Cu والزنك Zn والرصاص Pb والكادميوم Cd والزئبقHg في عضلات وكبد وخياشيم والغدد التناسلية لأسماك السردين والتونا التي جمعت من الساحل البحري الليبي لمدينة زليتن. وقد أظهرت النتائج التي تم تحليلها باستخدام جهاز مطياف الامتصاص الذري ان تراكيز المعادن الثقيلة لنوعي الاسماك تحت الدراسة قد اختلفت اختلاف كبير وكانت مرتبة كما يلي (Hg >Cd Cu> Pb > > Zn) بالإضافة الى هذا فقد اظهرت النتائج ان المستوى التراكمي للمعادن الثقيلة الأتية Cu, Pb, Cd and Hg كان الأعلى في الكبد تليها الخياشيم تم الغدد التناسلية وان اقل هذه المستويات وجد في العضلات، اما بالنسبة الى Zn فإن النمط التراكمي هو الغدد التناسلية، الكبد، الخياشيم والعضلات على التوالي. وقد خلصت الدراسة الى ان تركيز المعادن الثقيلة في العضلات كانت ضمن الحدود المسموح بها من قبل منظمة الأغدية والزراعة ومنظمة الصحة العالمية.

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