Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.)
Mokbel, E., Huesien, A., Abdel-Hamid, H., Osman, H. (2017). Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.). EKB Journal Management System, 9(1), 9-18. doi: 10.21608/eajbsf.2017.17048
El-Sayed Mohammad Soliman Mokbel; Amal Ibrahim Huesien; Hassan Fouad Mohammed Abdel-Hamid; Hanan H. Osman. "Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.)". EKB Journal Management System, 9, 1, 2017, 9-18. doi: 10.21608/eajbsf.2017.17048
Mokbel, E., Huesien, A., Abdel-Hamid, H., Osman, H. (2017). 'Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.)', EKB Journal Management System, 9(1), pp. 9-18. doi: 10.21608/eajbsf.2017.17048
Mokbel, E., Huesien, A., Abdel-Hamid, H., Osman, H. Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.). EKB Journal Management System, 2017; 9(1): 9-18. doi: 10.21608/eajbsf.2017.17048

Assessment of Resistance Risk to Emamectin Benzoate,Indoxacarb and Spinetoram in Cotton Leaf Worm, Spodoptera littoralis (Boisd.)

Egyptian Academic Journal of Biological Sciences, F. Toxicology & Pest Control
Article 2, Volume 9, Issue 1, April 2017, Page 9-18  XML PDF (444.43 K)
Document Type: Original Article
DOI: 10.21608/eajbsf.2017.17048
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Authors
El-Sayed Mohammad Soliman Mokbel1; Amal Ibrahim Huesien1; Hassan Fouad Mohammed Abdel-Hamid2; Hanan H. Osman3
1Department of Standard Rearing, Central Agricultural Pesticides Laboratory, Agriculture Research Center, 12618 Giza, Egypt
2Cotton Pesticides Bioassay Dept., Plant Protection Res. Institute, ARC
3Cotton leaf worm Dept., Plant Protection Res. Institute, ARC
Abstract
Cotton leaf worm, Spodoptera littoralis is a major polyphagous pest in Egypt. Resistance development to conventional insecticides led to introduce new pesticides with novel modes of action such as emamectin benzoate, indoxacarb and spinetoram. Assessment risk of resistance evolution to these insecticides has a great important for evaluating their future use on a pest population. To determine suitable larval stage for selection experiment. Bioassays were carried out against 1-st, 3-ed and 5-thlarval instars. Resistance risk assessment to these insecticides was conducted by selecting a field collected population of S. littoralis (1-stinstar) with the tested insecticides in the laboratory for six generations to estimate their realized heritability (h2). Realized heritability (h2) of resistance was 0.21, 0.37 and 0.33 for emamectin benzoate, indoxacarb and spinetoram, respectively. The rates of resistance development were compared using the response quotient (Q), which was estimated as 0.170 for both emamectin benzoate and spinetoram; while indoxacarb recorded Q value of 0.21. The projected rate of resistance development had been estimated with different values of slopes and realized heritability. Results suggest that a risk for resistance development to emamectin benzoate, indoxacarb and spinetoram may occur in S. littoralis under continuous selection pressure but that resistance development would be slower against emamectin benzoate and spinetoram than indoxacarb.
Keywords
Spodoptera littoralis; Emamectin benzoate; Indoxacarb; Spinetoram; realized heritability; resistance
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