Nutritional Physiology of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Fed on Different Wheat Varieties




Feeding Indices Parameters; Spodoptera frugiperda; Wheat Varieties; Insect-plant Interaction.


Within the context of agricultural ecosystems, understanding the nutritional physiology of insects and their host plant preferences is essential for optimizing pest management strategies and improving crop production. In this study, we conducted an in-depth examination of the nutritional physiology of the fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in the context of different host plants, specifically wheat varieties, in comparison to maize. Our investigation focused on key parameters, including the Relative Consumption Rate (RCR), Relative Growth Rate (RGR), and Efficiency of Conversion of Ingested food (ECI) of S. frugiperda fed on different wheat varieties including: Dilkash-20, Fakhar-E-Bhakkar-17, Subhani-21, Faisalabad-08, and Akbar-19 in comparison to maize (NK-6654). The results revealed that S. frugiperda displayed a significantly (P < 0.05) higher RCR (8.08 g/g/day), RGR (1.50 g/g/day), and ECI (25.1 %) when feeding on maize, followed by Fakhar-E-Bhakkar-17 (RCR =7.00 g/g/day, RGR =1.24 g/g/day and ECI =21.4 %) and Akbar-19 (RCR = 6.06 g/g/day, RGR = 1.04 g/g/day and ECI =19.7 %) wheat varieties after 1 week of feeding. The lowest values of all these nutritional parameters were recorded on the Dilkash-20 variety (RCR = 2.98 g/g/day, RGR = 0.38 g/g/day, and ECI = 7.94 %). These findings offer valuable insights into the nutritional interactions between S. frugiperda and the host plants, shedding light on potential implications for pest management strategies and crop patterns.



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How to Cite

Amjad, A., Ullah, M. I., Arshad, M., Majeed, M. Z., Umar, R., Perveen, N., Qadeer, M., & Gul, H. (2024). Nutritional Physiology of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) Fed on Different Wheat Varieties. Enfoque UTE, 15(2), 30-35.