Environmental & Analytical Toxicology

Hoda M Nasr

Publications

• Research Article
  Biomarker Response and Biomass Toxicity of Earthworms Aporrectodea caliginosa Exposed to IGRs Pesticides
  Author(s): Hoda M Nasr and Mohamed EI BadawyHoda M Nasr and Mohamed EI Badawy
  
  Earthworms play key roles in soils and sub lethal effects of environmental toxicants on these organisms should be taken seriously, since they might have detrimental effects on higher ecological levels. In laboratory experiments, we have assessed to investigate the toxicity of two insect growth regulators (IGRs) flufenoxuron and pyriproxyfen at different application rates and exposure times against mature stage earthworms Aporrectodea caliginosa. The effects of these pesticides on the growth rate in relation to the activities of acetylcholinesterase (AChE), polyphenol oxidase (PPO) and glutathione S-transferase (GST) as biomarker indicators were evaluated to elucidate the mechanisms of action. Toxicity studies indicated that pyriproxyfen was more harmful to mature earthworms than flufenoxuron with LC50=42.63 and 60.66 mg/kg after four weeks, respectively. T.. Read More»
  DOI: 10.4172/2161-0525.1000332

  Abstract PDF