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، جلد ۵، شماره ۱۲، صفحات ۴۶۰-۴۶۷
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژههای فارسی مقاله |
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| عنوان انگلیسی |
Concentration of Mercury in Selected Tissues of the Caspian Lamprey (Caspiomyzon wagneri) Migrants in Spawning Season |
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| چکیده انگلیسی مقاله |
Background: Mercury (Hg) is considered a global pollutant because Hg0 which is the predominant form of atmospheric Hg resides in the atmosphere for as long as 0.5 to 2 years. Mercury has many negative effects on the reproductive, respiratory, and immune systems. Methods: In this study, 24 Caspian lampreys (Caspiomyzon wagneri) were transported to the university laboratory and then stored in -20 oC until they were dissected. The liver, muscle, skin, ovaries, and testes were all dissected out. All samples were freeze-dried and ground by a mortar and pestle into powder. The specimens were analyzed by a Leco AMA254 mercury analyzer. Results: The order of mercury concentration in the lamprey tissues was as follows: Muscle > ovaries > liver > skin > testes. The mean values of mercury in muscle and testes were 192.25 ± 7.10 and 21.42 ± 1.48 Hg ng/g dry weight, respectively. There were no significant differences (N = 24) between the sexes in the Hg level of most tissues except for gonads. Discussion: A comparison with some ammocoetes of jawless fishes shows a 10 times less concentration than other records. This difference probably is due to non-parasitic behavior and use of various sources of nutrition in other species. Conclusion: In comparison of other kind of sea lamprey, due to detritivore habits of Caspian lamprey on a very specific part of food web (non-live food only in the sea floor), the supposed species can introduce as a special indicator of mercury and heavy metal levels in the aquatic ecosystem. |
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| کلیدواژههای انگلیسی مقاله |
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| نویسندگان مقاله |
شریف جورابیان شوشتری | Sharif Joorabian Shooshtari
Department of Environment, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran
مجتبی شیرود نجفی | Mojtaba Shirood Najafi
Department of Fisheries, Faculty of Natural Resources and Marine Sciences, Noor, Iran
ندا خسروی | Neda Khosravi
Department of Fisheries, Faculty of Natural Resources and Marine Sciences, Noor, Iran
سید محمود قاسم پوری | Seyed Mahmoud Ghasempouri
Department of Environment, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran
عباس اسماعیلی ساری | Abbas Esmaili Sari
Department of Environment, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran
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| نشانی اینترنتی |
http://ijt.arakmu.ac.ir/browse.php?a_code=A-10-2-17&slc_lang=en&sid=1 |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/2737/article-2737-2049816.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
عمومی |
| نوع مقاله منتشر شده |
پژوهشی |
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