Interaction between feeding efficiency and digestive physiology of the pink stem borer, Sesamia cretica Lederer (Lepidoptera: Noctuidae), and biochemical compounds of different sugarcane cultivars

Physicochemical Properties of Sugarcane Cultivars Affected Life History and Population Growth Parameters of Sesamia nonagrioides (Lefebvre) (Lepidoptera: Noctuidae)

“…In this study, negative correlations between pupal weight and the concentration of tannins, total phenolics, and flavonoids suggested that the larval and pupal growth are affected by the quality of food consumed or the amount of secondary compounds [ 29 , 76 ]. Moreover, the nutritional effects of unsuitable cultivars are reflected in weight of the pupae [ 32 , 77 ]. Therefore, the high pupal weight on cultivar CP69-1062 might be related to the low contents of tannins, total phenolics, and flavonoids in this cultivar.…”

“…Therefore, the high pupal weight on cultivar CP69-1062 might be related to the low contents of tannins, total phenolics, and flavonoids in this cultivar. No significant correlation between pupal weight and the carbohydrate content of sugarcane cultivars points to the more important effect of secondary compounds than carbohydrate on the growth of pupae [ 32 , 77 ]. According to the results of this study, the females reared on cultivars CP69-1062 and CP48-103 had higher longevity and fecundity.…”

“…However, cultivar SP70-1143 was the least suitable (most resistant) cultivar for S. nonagrioides , which could be recommended for cultivation in the infested sugarcane farms, where the damage of S. nonagrioides is usually high. Since CP57-614, CP73-21, and SP70-1143 are reported as resistant sugarcane cultivars to S. cretica [ 77 ], they can be recommended for use in transgenic expression for resistance to S. nonagrioides and S. cretica . The outcomes obtained in this research may improve the use of resistant cultivars in the better management of sugarcane stem borers in IPM programs, which, in turn, lead to the reduction in the loss caused by this pest in sugarcane fields.…”

Growth, consumption and digestive enzyme activities of Spodoptera littoralis (Boisd) on various mung bean cultivars reveal potential tolerance traits

“…Nutritional indices are useful for evaluating the performance of pests in response to nutrients obtained from plants (Hemati et al, 2012b). Given that biochemical traits of host plants play an important role in determining their suitability to insect pests, comparative investigation of herbivore digestive physiology on various cultivars can help identify sources of resistance that may be useful in integrated pest management (IPM) programmes (Lawrence & Koundal, 2002; Babamir‐Satehi et al, 2022). For example, secretion of digestive enzymes, such as proteases, amylases and lipases catalyses digestion of food macromolecules in the midgut (Biggs & Mcgregor, 1996; Hemati et al, 2012a).…”

Life Table Parameters and Digestive Enzyme Activity of Spodoptera littoralis (Boisd) (Lepidoptera: Noctuidae) on Selected Legume Cultivars

“…Therefore, assessment of the biochemical metabolites characterizing potential selections for cultivation may help explain differences in demographic and physiological responses of herbivores and assist in selection of resistance traits [ 13 , 20 ]. For example, elucidating digestive physiology of pests has benefited development of target-specific insecticides [ 21 , 22 , 23 ]. Highly polyphagous herbivores, such as S. littoralis , have sophisticated mechanism(s) to regulate their digestive proteases [ 24 ]; midgut proteases as well as α-amylases are two groups that may prove particularly important for digestion of legumes [ 25 ].…”