[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 6, Issue 18 (Autumn 2012) ::
IJT 2012, 6(18): 672-680 Back to browse issues page
Comparison of Lethal Concentrations (LC50-96 H) of Cdcl2, Crcl3, and Pb (NO3)2 in Common Carp (Cyprinus carpio) and Sutchi Catfish (Pangasius Hypophthalmus)
Zeynab Abedi , Mohammadkazem Khalesi * , Sohrab Kohestan Eskandari , Hossein Rahmani
Department of Fisheries, Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran. , khalesimk@iran.ir
Abstract:   (11544 Views)
Background: The present study compared lethal concentrations (LC50-96 h) of CdCl2, CrCl3, and Pb (NO3)2 between two scaled and scaleless freshwater fish species: Cyprinus carpio (Cyprinidae) and Pangasius hypophthalmus (Pangasiidae).
Methods: The experimental fishes were obtained from fish markets/ponds with average lengths and weights of approximately 11.68 ±1.92 and 9.8±1.9 cm, and 25.92±6.3 and 18.61±3.22 g for C. carpio and P. hypophthalmus, respectively. The fishes were exposed to different concentrations of cadmium (Cd) (0, 10, 20, 40, 80, 100, 120, 200 mg L−1) lead (Pb) (0, 20, 40, 50, 60, 90, 150 mg L−1), and chromium (Cr) (0, 5, 10, 20, 30, 40 mg L−1) for 96 h. Physicochemical parameters, such as dissolved oxygen, pH, and temperature of aquaria as well as mortality rate of the fishes, were monitored daily.
Results: The 50% lethal concentrations (LC50-96 h) of CdCl2, CrCl3, and Pb (NO3)2 for P. hypophthalmus were found at 64.89, 7.46, and 48.06 mg L−1, and those of CdCl 2, CrCl 3, Pb (NO3)2 for C. carpio were detected at 84.8, 17.05, and 77.33 mg L−1. The ratios of heavy metal toxicity factors (TF) were greater for common carp compared to those for the catfish.
Conclusion: Our preliminary findings suggest that common carp C. carpio with higher LC50 (and LC100) values appears to be more tolerant to heavy metals exposure than the catfish (P. hypophthalmus). This may be due to the resistance to the heavy metals through protection from the carp's scaled body versus scaleless body of the catfish.
Keywords: Cadmium, Chromium, Lead, Fish Scales, 50% Lethality.
Full-Text [PDF 242 kb]   (3498 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or Email:

Write the security code in the box >

XML   Persian Abstract   Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Abedi Z, Khalesi M, Kohestan Eskandari S, Rahmani H. Comparison of Lethal Concentrations (LC50-96 H) of Cdcl2, Crcl3, and Pb (NO3)2 in Common Carp (Cyprinus carpio) and Sutchi Catfish (Pangasius Hypophthalmus). IJT. 2012; 6 (18) :672-680
URL: http://ijt.arakmu.ac.ir/article-1-144-en.html

Volume 6, Issue 18 (Autumn 2012) Back to browse issues page
مجله سم شناسی و مسمومیتهای ایران Iranian Journal of Toxicology
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3698