Volume 20 Issue 4
Aug.  2007
Turn off MathJax
Article Contents

B.M.MATUR, B.J.DAVOU. Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae[J]. Biomedical and Environmental Sciences, 2007, 20(4): 313-316.
Citation: B.M.MATUR, B.J.DAVOU. Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae[J]. Biomedical and Environmental Sciences, 2007, 20(4): 313-316.

Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae

  • Objective To assess the phytochemical properties of Chromoleana odorata in the control of blackflies to help check the problem of environmental pollution from the use of chemical insecticides. Methods Dried pulverized leaves of Chromolaena odorata (100 g) were soaked in distilled water for 24 hours and the extract was filtered, marc pressed and evaporated over water bath. Stock solution of the dried mass (1 g) was concentrated by dissolving in 100 mL of water. Serial dilutions (100 mg/mL, 10 mg/mL, 1 mg/mL, 0.1 mg/mL, 0.01 mg/L, and 0.001 mg/mL) of both the extract and Chlopyrifos (organo phosphorus) were prepared and toxicity was tested on the larvae of Simulium species. Results The chemical compound recorded 100% larval mortality at all concentrations while the plant extract recorded 100% larval mortality in three (100, 10, and 1 mg/mL) of its diluent concentration. The percentage of larval mortality by chemical compound and plant extract was statistically insignificant (t = 0.2456, P>0.05), but the mortality rate was significant within 30 min interval of exposure time (t= 3.756, P<0.05). The LC50 of the plant extract was determined at about 0.001 mg/mL concentration. This showed that the plant extract had an appreciable larvicidal property close to that of the chemical compound. Conclusion This result indicates the usefulness of plant materials in the control of obnoxious insect vectors of mn. It also opens additional approach to the management of environment from toxic chemicals that are non-biodegradable and cause environmental imbalance in the ecosystem.
  • 加载中
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Article Metrics

Article views(1125) PDF downloads(30) Cited by()

Proportional views
Related

Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae

Abstract: Objective To assess the phytochemical properties of Chromoleana odorata in the control of blackflies to help check the problem of environmental pollution from the use of chemical insecticides. Methods Dried pulverized leaves of Chromolaena odorata (100 g) were soaked in distilled water for 24 hours and the extract was filtered, marc pressed and evaporated over water bath. Stock solution of the dried mass (1 g) was concentrated by dissolving in 100 mL of water. Serial dilutions (100 mg/mL, 10 mg/mL, 1 mg/mL, 0.1 mg/mL, 0.01 mg/L, and 0.001 mg/mL) of both the extract and Chlopyrifos (organo phosphorus) were prepared and toxicity was tested on the larvae of Simulium species. Results The chemical compound recorded 100% larval mortality at all concentrations while the plant extract recorded 100% larval mortality in three (100, 10, and 1 mg/mL) of its diluent concentration. The percentage of larval mortality by chemical compound and plant extract was statistically insignificant (t = 0.2456, P>0.05), but the mortality rate was significant within 30 min interval of exposure time (t= 3.756, P<0.05). The LC50 of the plant extract was determined at about 0.001 mg/mL concentration. This showed that the plant extract had an appreciable larvicidal property close to that of the chemical compound. Conclusion This result indicates the usefulness of plant materials in the control of obnoxious insect vectors of mn. It also opens additional approach to the management of environment from toxic chemicals that are non-biodegradable and cause environmental imbalance in the ecosystem.

B.M.MATUR, B.J.DAVOU. Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae[J]. Biomedical and Environmental Sciences, 2007, 20(4): 313-316.
Citation: B.M.MATUR, B.J.DAVOU. Comparative Larvicidal Property of Leaf Extract of Chromolaena odorata L (Composidae) and Chlopyrifos (Organophosphorus Compound) on Simulium Larvae[J]. Biomedical and Environmental Sciences, 2007, 20(4): 313-316.

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return