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[Mercury pollution in cricket in different biotopes suffering from pollution by zinc smelting]
Dong-Mei Zheng1, Xin-Xin Li, Qing Luo
1Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, Shenyang 110044, China. zhengdm126@163.com
Abstract:
Total mercury contents in cricket bodies were studied in different biotopes in the surrounding of Huludao Zinc Plant to discuss the mercury distribution characteristics in cricket and to reveal the effects of environmental mercury accumulation in the short life-cycle insects through comparing cricket with other insect species. The average mercury content in cricket was 0.081 mg x kg(-1) and much higher than those in the control sites (0.012 mg x kg(-1) in average) in different biotopes. Mercury contents were found in the order of cricket head > wing > thorax approximately abdomen > leg. Mercury contents in cricket bodies varied greatly with sample sites. Significant correlation was found between the mercury contents in cricket and the distance from the pollution source as well as the mercury contents in plant stems. No significant correlation was found between the mercury contents in soil and in cricket bodies. Mercury contents in cricket were lower than those in cicadae, similar to those in other insects with shorter life-cycle periods.
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