مقایسه همبستگی سن، طول و وزن با تراکم جیوه در عضله دو گونه ماهی؛ شیربت و حمری از ماهیان رودخانه مارون بهبهان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد مهندسی عمران- محیط زیست، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

2 عضو هیئت علمی گروه شیلات و محیط زیست، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد

چکیده

میزان آلاینده‌ها در ماهی، به‌دلیل اثرات قابل توجهی که بر خود ماهی و سایر ارگانیسم‌هایی دارد، توجه زیادی را به خود معطوف داشته است. مطالعه حاضر، با هدف تعیین غلظت جیوه در بافت عضله دو گونه شیربت و حمری از ماهیان رودخانه مارون بهبهان واقع در جنوب شرقی استان خوزستان صورت گرفت. به‌منظور اجرای این تحقیق در فواصل ماه‌های تیر تا آذر سال 1388 به‌صورت تصادفی از هر گونه 20 عدد ماهی از رودخانه صید و جمع‌آوری شد و پس از اجرای مراحل بیومتری نمونه‌ها و تشخیص جنسیت و سن آن‌ها، غلظت جیوه در بافت عضله به‌وسیله دستگاه آنالیز جیوه AMA254، اندازه‌گیری شد. بررسی نرمالیتی داده‌های مربوط به سن و وزن با غلظت جیوه در بافت عضله هر دو گونه نشان داد که داده‌ها از توزیع نرمال برخوردار نبوده و تفاوت معنی‌دار آماری وجود دارد. مقایسه میانگین غلظت جیوه در بافت هر دو گونه ماهی (ماهی شیربت 809/0 میلی‌گرم بر کیلوگرم وزن ماهی و ماهی حمری 388/0 میلی‌گرم بر کیلوگرم) با حد مجاز استانداردهای جهانی نشان داد که میانگین غلظت جیوه در بافت عضله هر دو گونه زیر حد بیشینه استاندارد تعیین شده توسط سازمان حفاظت از محیط‌زیست آمریکا است، اما در مقایسه با استاندارد سازمان بهداشت جهانی، میانگین غلظت جیوه در عضله گونه شیربت بالاتر از حد مجاز بود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Comparison Between Age, Length and Weight with Mercury Concentration in the Muscle of Two Fish species; Barbus Grypus and Barbus luteus of Fishes Maroon River in Behbahan

نویسندگان [English]

  • Mahnaz Momtazan 1
  • Mehrnaz Asefi 1
  • Rasool zamaniahmadmahmoodi 2
1 Former Graduate Student of Civil and Environmental Engineering, Faculty of Water Sciences Engineering, Shahid Chamran University, Ahvaz
2 Faculty Member of Fishery and Environment, Faculty of Natural Resources and Geosciences, Shahrekord Universtiy, Shahrekord
چکیده [English]

Increasing attention is nowadays being paid to contaminants in fish due to their significant effects on the fish and other organisms that live on them. This study was designed to investigate mercury concentrations in the muscle tissues of the two species of Barbus grypus and Barbus luteus indigenous to the Maroon River in Behbahan, southeast of Khuzestan Province. For this purpose, 20 fish from each species were randomly collected from the river over the period from June to December 2009. The fish were then subjected to biometric tests and their gender and age were determined while the Mercury Analyzer AMA254 was used to measure mercury concentrations in their muscle tissues. Examination of the data on age and weight correlations with mercury concentration in the muscle tissues of both species showed that the data did not exhibit a normal distribution but, rather, revealed statistically significant differences. Comparison of the mean values of mercury concentration in the tissues (0.809 mg/kg in Barbus grypus and 0.388 mg/kg in Barbus luteus) with MRL standard limits showed that both species had mercury concentrations below the maximum standard limit set by the EPA. Comparison with WHO standard limits, however, revealed that Barbus grypus had a muscle mercury concentration higer than the WHO allowable limit.

کلیدواژه‌ها [English]

  • Mercury
  • fish
  • Muscle
  • Barbus grypus
  • Barbus luteus
  • Maroon River in Behbahan
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