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Effect of exposure of gas oil on the survival of Sesarma boulengeri from the Shatt Al-Arab river. | ||
| Mesopotamian Journal of Marine Science | ||
| Article 1, Volume 23, Issue 1, 2008, Pages 27-40 PDF (0 K) | ||
| Authors | ||
| A.Y. AL-Adhub; Faris J.M. Al-Imarah; Sami T. Al-Yasiry | ||
| Abstract | ||
| Laboratory experiment was conducted to evaluate the short term toxicity of gas oil in the survival rate of aquatic crab Sesarma boulengeri residing the intertidal zones in the banks of Shatt Al-Arab River. Crabs were collected by hand and put in a tank of 20 l capacity contains filtered water from Shatt Al-Arab River close to collection site. In the lab crabs were classified into 1) Juvenile male, 2) Mature males, 3) Juvenile females and 4) mature female. In separate containers, 10 of crabs of each class in triplicate were put in each container and exposed during summer season to different concentrations of gas oil, 0.5, 2.5, 5, 7.5 and 10 ml/l in addition to control sample. The crabs were monitored every 24 hours and the mortalities were recorded numerically. The Juvenile male showed the highest resistance to gas oil followed by Juvenile female, then the mature males and finally mature females showed the lowest resistance to gas oil. Moreover, the toxicity of gas oil increased with exposure time. | ||
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