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Buccal deformities in Chironomid larvae (Diptera: Chironomidae) as an indicator Risk Assessment and Anthropogenic stresses of pollution in fresh water of the River Nile, Sohag Governorate, Egypt

Research Paper | June 1, 2016

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Fatma K. Adham, Azza M. Khedre, Tarek G. Ismail, Mohamed El-Araby, Shahenda A.A. Abu ElEla, Wael M. ElSayed

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J. Bio. Env. Sci.8( 6), 37-48, June 2016


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Mouth parts deformities in chironomid larvae are considered as indicators of environmental stress in aquatic systems caused by water and sediment pollution such as heavy metals, pesticides as well as organic contamination. Fourth instar chironomid larvae were collected from two sites (SI and SII) located in the River Nile, Sohag Governorate, Egypt. The chironomid community of the two SI and SII was dominated by Dicrotendipes nilophilus (Diptera: Chironomidae). The percentage numbers of chironomid larvae with deformed mouthparts were 29% (SI) and 14% (SII). Although there were no significant differences in the sediment metal concentrations between the two sites, significant differences were recorded among the metal concentrations of iron (Fe), zinc (Zn) and copper (Cu). Moreover, the present results revealed that some physicochemical parameters played an important role in increasing the mouthparts abnormalities.


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Buccal deformities in Chironomid larvae (Diptera: Chironomidae) as an indicator Risk Assessment and Anthropogenic stresses of pollution in fresh water of the River Nile, Sohag Governorate, Egypt

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