Biology and nutrition of Spodoptera frugiperda (Lepidoptera: Noctuidae) fed on different food sources
Keywords: agricultural entomology, feeding behavior, insect-plant interactions
AbstractWe studied Spodoptera frugiperda development using different food sources in the laboratory and field. Newly hatched larvae were fed soybean, cotton, maize, wheat, and oat leaves. An artificial diet was used as the control. Duration of pre-pupal, pupal, and larva-adult period, pupal weight, sex ratio, survival, larva feeding preferences, oviposition preferences, and nutritional quality of different hosts were evaluated. Insects fed on wheat showed the shortest larva-adult period. The insects fed on cotton and soybean had longer larval development cycles and pupae of lower weight. Feeding preference was evident for third instar larvae and did not differ between wheat, oat, maize, and soybean, which were the preferred hosts. Moths oviposited to a greater extent on the upper canopy of wheat than that of other plants in both the no-choice and free-choice tests. Treatments influenced insect growth, food consumption, and digestion when nutritional variables were analyzed. Thus, grasses were better hosts for S. frugiperda development. Cotton was the least preferred food, followed by soybean. The present study can improve our understanding of S. frugiperda in these different crops and help in developing management strategies. Even though S. frugiperda is considered to be polyphagous, this pest is closely associated with grasses (maize, wheat, oat) and has lower potential as a soybean or cotton feeder. Howerver, S. frugiperda food intake regulation appears to be triggered by a complex of different mechanisms. Thus, S. frugiperda can also damage soybean and cotton and adapt to them in the absence of preferred hosts.
Download data is not yet available.
How to Cite
Silva, D., Bueno, A., Andrade, K., Stecca, C., Neves, P., & Oliveira, M. (2017). Biology and nutrition of Spodoptera frugiperda (Lepidoptera: Noctuidae) fed on different food sources. Scientia Agricola, 74(1), 18-31. https://doi.org/10.1590/1678-992x-2015-0160
Copyright (c) 2017 Scientia Agricola
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.