The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity
Moussa, M., Moustafa, Z., Abdel-Hafez, H., Khidr, A. (2019). The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity. EKB Journal Management System, 12(5), 19-27. doi: 10.21608/eajbsa.2019.52015
Marwa A. Moussa; Zahia k. Moustafa; Hanan F. Abdel-Hafez; Abdel-Aziz A. Khidr. "The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity". EKB Journal Management System, 12, 5, 2019, 19-27. doi: 10.21608/eajbsa.2019.52015
Moussa, M., Moustafa, Z., Abdel-Hafez, H., Khidr, A. (2019). 'The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity', EKB Journal Management System, 12(5), pp. 19-27. doi: 10.21608/eajbsa.2019.52015
Moussa, M., Moustafa, Z., Abdel-Hafez, H., Khidr, A. The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity. EKB Journal Management System, 2019; 12(5): 19-27. doi: 10.21608/eajbsa.2019.52015

The Role of Mint Oil in Enhancing Spinosad Toxicity against the Cotton Leaf worm, Spodoptera littoralis in Relation to some Enzymes Activity

Egyptian Academic Journal of Biological Sciences. A, Entomology
Article 3, Volume 12, Issue 5, October 2019, Page 19-27  XML PDF (973.09 K)
Document Type: Original Article
DOI: 10.21608/eajbsa.2019.52015
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Authors
Marwa A. Moussa1; Zahia k. Moustafa2; Hanan F. Abdel-Hafez1; Abdel-Aziz A. Khidr1
1Plant Protection Research Institute, Agricultural Research Centre
2Entomology Department, Faculty of Science, Ain Shams University
Abstract
This work aimed to study the effect of adding mint oil to Spinosad insecticide on the activity of some enzymes related to the toxicity of the compound against the cotton leaf worm, Spodoptera littoralis. The results showed that adding 0.3% mint oil to Spinosad solution increased its toxicity against S. littoralis 2nd instar larvae, where its LC50 value was reduced from 20.482 ppm to 8.068 ppm after adding mint oil. The biochemical studies in the treated larvae with Spinosad combined with 0.3% mint oil showed a significant decrease in the activity of the enzymes; AChE, β-esterase, and phenoloxidase, while acid and alkaline phosphatases activity significantly increased; compared to treatment with Spinosad only. This data confirms the effect of mint oil on the activity of these enzymes towards Spinosad, which may explain the increased toxicity of Spinosad when mixed with mint oil against S. littoralis.
Keywords
Spodoptera littoralis; Spinosad; Mint oil; Biochemical studies
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