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Egyptian Journal of Aquatic Biology and Fisheries
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EL-Halfawy, M., Mahmoud, W., Ramadan, A., Soliman, Y. (2006). COMPARATIVE STUDY ON THE LEVELS OF HEAVY METALS IN THE BITTER LAKES AND LAKE TIMSAH, (SUEZ CANAL) IN RELATION TO THE REPRODUCTIVE CYCLE OF THE RABBIT FISH SIGANUS RIVULA TUS.. Egyptian Journal of Aquatic Biology and Fisheries, 10(2), 179-193. doi: 10.21608/ejabf.2006.1857
Magdy EL-Halfawy; Waheed Mahmoud; Ami Ramadan; Yousry Soliman. "COMPARATIVE STUDY ON THE LEVELS OF HEAVY METALS IN THE BITTER LAKES AND LAKE TIMSAH, (SUEZ CANAL) IN RELATION TO THE REPRODUCTIVE CYCLE OF THE RABBIT FISH SIGANUS RIVULA TUS.". Egyptian Journal of Aquatic Biology and Fisheries, 10, 2, 2006, 179-193. doi: 10.21608/ejabf.2006.1857
EL-Halfawy, M., Mahmoud, W., Ramadan, A., Soliman, Y. (2006). 'COMPARATIVE STUDY ON THE LEVELS OF HEAVY METALS IN THE BITTER LAKES AND LAKE TIMSAH, (SUEZ CANAL) IN RELATION TO THE REPRODUCTIVE CYCLE OF THE RABBIT FISH SIGANUS RIVULA TUS.', Egyptian Journal of Aquatic Biology and Fisheries, 10(2), pp. 179-193. doi: 10.21608/ejabf.2006.1857
EL-Halfawy, M., Mahmoud, W., Ramadan, A., Soliman, Y. COMPARATIVE STUDY ON THE LEVELS OF HEAVY METALS IN THE BITTER LAKES AND LAKE TIMSAH, (SUEZ CANAL) IN RELATION TO THE REPRODUCTIVE CYCLE OF THE RABBIT FISH SIGANUS RIVULA TUS.. Egyptian Journal of Aquatic Biology and Fisheries, 2006; 10(2): 179-193. doi: 10.21608/ejabf.2006.1857

COMPARATIVE STUDY ON THE LEVELS OF HEAVY METALS IN THE BITTER LAKES AND LAKE TIMSAH, (SUEZ CANAL) IN RELATION TO THE REPRODUCTIVE CYCLE OF THE RABBIT FISH SIGANUS RIVULA TUS.

Article 9, Volume 10, Issue 2, April 2006, Page 179-193  XML PDF (694.68 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2006.1857
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Authors
Magdy EL-Halfawy; Waheed Mahmoud; Ami Ramadan; Yousry Soliman
National Institute of Oceanography and Fisheries, Suez, Egypt
Abstract
The concentrations of Cu, Zn, Pb, Cd, Fe, Mn, Cr, Ni and Co in muscles, liver and gonads of the marine rabbit fish Siganus rivulaivs from the Bitter lakes and lake Timsah, (Suez Canal) were investigated seasonally, over the course of one year (November 2002 - August 2003). Muscles recorded the lowest concentrations of metals than other organs which ranged between 0.22-0.76 and 0.27 - 1.23, 1.95 - 3.67 and 3.01 -5.08, 0.09 -0.43 and 0.24 -0.51, 0.04 -0.16 and 0.11 -0.37, 4.32 -5.66 and 5.01 - 10.33, 0.12 - 0.29 and 0.26 - 1.35,0.06 - 0.09 and 0.05 - 0.16, 0.02 - 0.39 and 0.03 - 0.51 and 0.05 - 0.24 and 0.06 - 0.31 jig/g wet weight for Cu, Zn, Pb, Cd, Fe, Mn, Cr, Ni and Co in Bitter lakes and lake Timsah, respectively. The highest concentrations of all studied metals were found in gonads. Variation of metals in fish muscles through different seasons indicated that the most studied metals exhibited their highest value during the hot seasons (spring & summer). Gonadosomatic index (GSI) and its relationship with metal accumulation was calculated for the studied fish. By using seasonal changes in the values of gonadosomatic index, it was found that their spawning season is during spring.
Keywords
Heavy metals; Sigcmus rivulatus; reproductive cycle; Bitter Lakes; Lake Timsah; Suez Canal
Main Subjects
Fisheries
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