Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem
Background: The Present study was carried out to track and calculate Biomagnification Factor (BMF) of total mercury (T-Hg) between two different trophic levels (i.e., plankton and a planktivorous fish) in a fresh water grazing food chain. Methods: Experimental organisms were planktonic biomass and...
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| Format: | Article |
| Language: | English |
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Arak University of Medical Sciences
2017-02-01
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| Series: | Iranian Journal of Toxicology |
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| Online Access: | http://ijt.arakmu.ac.ir/browse.php?a_id=540&slc_lang=en&sid=1&ftxt=1 |
| _version_ | 1818758986897293312 |
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| author | Mehdi Khoshnamvand Kamran Almasieh Shahram Kaboodvandpour |
| author_facet | Mehdi Khoshnamvand Kamran Almasieh Shahram Kaboodvandpour |
| author_sort | Mehdi Khoshnamvand |
| collection | DOAJ |
| description | Background: The Present study was carried out to track and calculate Biomagnification Factor (BMF) of total mercury (T-Hg) between two different trophic levels (i.e., plankton and a planktivorous fish) in a fresh water grazing food chain.
Methods: Experimental organisms were planktonic biomass and silver carp (Hypophthalmichthys molitrix) as a planktivorous fish. Silver carp samples were obtained from randomly selected points from different sampling stations. The concentrations of T-Hg in collected samples were determined by Advanced Mercury Analyzer.
Results: Means of T-Hg in planktonic biomass and muscle tissue of silver carp were 78.21 ± 3.13 and 367.12 ± 26.43 ng g-1 dry weights, respectively. Mean T-Hg in plankton, sampled fish during the study months and amongst the sampling stations did not show significant differences. The BMFHg(plankton-fish) was differ among months; moreover, calculated BMF was greater than 1 during study months, which means biomagnification was occurring in SGR. The concentration of T-Hg in the muscle tissue of all fish samples that weighed more than 850 gr was higher than the acceptable limits based on EPA (300 ng g-1) and WHO (500 ng g-1) standards. The highest BMFHg was observed in August
Conclusion: It seems that mercury pollution of SGR has a natural source. The calculated BMFs were greater than 1 and the concentrations of T-Hg in muscle tissues of those samples weighing more than 850 gr were higher than FAO and WHO standards. Therefore, consumption of the SGR's silver carp must be accompanied by serious health considerations. |
| first_indexed | 2024-12-18T06:35:33Z |
| format | Article |
| id | doaj.art-a28167cdbceb43c28167166bc4205e74 |
| institution | Directory Open Access Journal |
| issn | 2008-2967 2251-9459 |
| language | English |
| last_indexed | 2024-12-18T06:35:33Z |
| publishDate | 2017-02-01 |
| publisher | Arak University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Toxicology |
| spelling | doaj.art-a28167cdbceb43c28167166bc4205e742022-12-21T21:17:48ZengArak University of Medical SciencesIranian Journal of Toxicology2008-29672251-94592017-02-011122128Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water EcosystemMehdi Khoshnamvand 0 Kamran Almasieh 1Shahram Kaboodvandpour2PhD Student Environmental Sciences, Research Center of Eco-Environmental Sciences, University of Chinese Academy of Sciences, Beijing, China.Department of Environmental Sciences, University of Kurdistan, Sanandaj, Iran.Department of Environmental Sciences, University of Kurdistan, Sanandaj, Iran.*Corresponding Author: s.kaboodvandpour@uok.ac.irBackground: The Present study was carried out to track and calculate Biomagnification Factor (BMF) of total mercury (T-Hg) between two different trophic levels (i.e., plankton and a planktivorous fish) in a fresh water grazing food chain. Methods: Experimental organisms were planktonic biomass and silver carp (Hypophthalmichthys molitrix) as a planktivorous fish. Silver carp samples were obtained from randomly selected points from different sampling stations. The concentrations of T-Hg in collected samples were determined by Advanced Mercury Analyzer. Results: Means of T-Hg in planktonic biomass and muscle tissue of silver carp were 78.21 ± 3.13 and 367.12 ± 26.43 ng g-1 dry weights, respectively. Mean T-Hg in plankton, sampled fish during the study months and amongst the sampling stations did not show significant differences. The BMFHg(plankton-fish) was differ among months; moreover, calculated BMF was greater than 1 during study months, which means biomagnification was occurring in SGR. The concentration of T-Hg in the muscle tissue of all fish samples that weighed more than 850 gr was higher than the acceptable limits based on EPA (300 ng g-1) and WHO (500 ng g-1) standards. The highest BMFHg was observed in August Conclusion: It seems that mercury pollution of SGR has a natural source. The calculated BMFs were greater than 1 and the concentrations of T-Hg in muscle tissues of those samples weighing more than 850 gr were higher than FAO and WHO standards. Therefore, consumption of the SGR's silver carp must be accompanied by serious health considerations.http://ijt.arakmu.ac.ir/browse.php?a_id=540&slc_lang=en&sid=1&ftxt=1BiomagnificationGrazing Food ChainMercuryPlanktonSilver Carp |
| spellingShingle | Mehdi Khoshnamvand Kamran Almasieh Shahram Kaboodvandpour Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem Iranian Journal of Toxicology Biomagnification Grazing Food Chain Mercury Plankton Silver Carp |
| title | Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem |
| title_full | Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem |
| title_fullStr | Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem |
| title_full_unstemmed | Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem |
| title_short | Mercury Biomagnification between Two Trophic Levels of a Grazing Food Chain (Plankton and Planktivorous Fish) in a Fresh Water Ecosystem |
| title_sort | mercury biomagnification between two trophic levels of a grazing food chain plankton and planktivorous fish in a fresh water ecosystem |
| topic | Biomagnification Grazing Food Chain Mercury Plankton Silver Carp |
| url | http://ijt.arakmu.ac.ir/browse.php?a_id=540&slc_lang=en&sid=1&ftxt=1 |
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