Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities
Abd El-Naby, S., Elsheikh, T., Abd El Mageed, E. (2019). Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities. EKB Journal Management System, 11(3), 63-70. doi: 10.21608/eajbsf.2019.57743
Sameh M. Abd El-Naby; Tarek A. A. Elsheikh; El Shaimaa N. I. Abd El Mageed. "Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities". EKB Journal Management System, 11, 3, 2019, 63-70. doi: 10.21608/eajbsf.2019.57743
Abd El-Naby, S., Elsheikh, T., Abd El Mageed, E. (2019). 'Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities', EKB Journal Management System, 11(3), pp. 63-70. doi: 10.21608/eajbsf.2019.57743
Abd El-Naby, S., Elsheikh, T., Abd El Mageed, E. Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities. EKB Journal Management System, 2019; 11(3): 63-70. doi: 10.21608/eajbsf.2019.57743

Evaluation of some Organophosphorous Insecticides against the Tomato Whitefly, Bemisia tabaci (GENN.) Collected from some Upper Egypt Governorates with Relation to Esterases Enzyme Activities

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Article 6, Volume 11, Issue 3, December 2019, Page 63-70  XML PDF (855.94 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2019.57743
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Authors
Sameh M. Abd El-Naby1; Tarek A. A. Elsheikh1; El Shaimaa N. I. Abd El Mageed2
1Plant Prot. Res. Inst., Agric. Res. Cent., Dokki, Giza, Egypt Giza, Egypt
2Plant Prot. Res. Inst., Agric. Res. Cent., Dokki, Giza, Egypt Giza, Egyp
Abstract
The tomato whitefly, Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) is a worldwide pest of many crops. Organophosphorous (OP) insecticides have been used to control this insect for many years and are still being used despite the development of resistance. In this work’ evaluation of the biological activity of three organophosphorous insecticides, profenofos 72% E.C. (Selecron); chlorpyrifos 48% E.C.(Dursban) and fenitrothion 50% E.C. (Sumithion)  on the felid strain of tomato whitefly was carried out on tomato plants.  Whitefly adults were collected from four different Egyptian Governorates throughout three successive years (2016-2018). The LC50 value of each compound in each Governorate was used to determine the biochemical responses of this insect pest.The colorimetric test of esterase activity is a useful tool to detect the level of resistance against this group of insecticides. The obtained results showed that profenofos insecticide was more toxic on the tested insects followed by chlorpyrifos, while fenitrothion showed a low toxic effect on the tested insects in all years. The activities of α and β esterases have fluctuated up and down in some Governorates. 
Keywords
Bemisia tabaci; Profenofos; chlorpyrifos; fenitrothion; resistance; esterases activity
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