Phenotypic variation in adults of Chilo partellus (Swinhoe) from diverse ecological regions of India

Dhillon, Mukesh K.; Tanwar, Aditya K.; Hasan, Fazil; Bhadauriya, Amarpal Singh

doi:10.1111/azo.12377

Cited by 3 publications

(2 citation statements)

References 62 publications

(47 reference statements)

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“…There is significant phenotypic variation in adults of C. partellus under diverse ecological regions of India (Dhillon et al, 2022b). The biological performance and biochemistry of the insect from different ecological conditions vary while feeding on diverse host plant genotypes, and plant biochemistry is also differentially expressed under different climatic conditions, thus leading to variable herbivore-plant associations (Dhillon et al, 2021;Samal et al, 2022).…”

Section: Insect-plant Interactionmentioning

confidence: 99%

Diapause in Chilo partellus: A Research Journey

Dhillon

2023

ije

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Spotted stem borer, Chilo partellus (Swinhoe) is one of the most widely distributed pests of coarse cereals, causing 18 to 25% yield losses in Asia and Africa. The larvae of C. partellus pass through hibernation under North Indian and aestivation under South Indian conditions. Although diapause helps C. partellus in adapting under unfavorable conditions, there is 17.2 to 28.3% and 7.0 to 33.7% population sacrifice during hibernation and aestivation, respectively. The population heterogeneity in C. partellus could be due to hibernation or aestivation, wherein the models, Ikemoto & Takai (linear), and Lactin-1 and Lactin-2 (non-linear) are efficient for describing temperature dependent development and estimating the temperature thresholds of diapausing larvae. This helps in predicting the occurrence, seasonal emergence, number of generations and population dynamics of the pest. Diapause results in differential regulation of hormonal and biochemical profiles, impose deleterious effects on the post-diapause development, reproductive physiology and population growth of C. partellus. The diapause, developmental and morphometric traits in C. partellus are governed by overdominance gene effects which mainly depend on parental diapause history. Four different biotypes of C. partellus viz., Hisar, Hyderabad, Parbhani and Coimbatore exist in India, suggesting that sorghum and maize genotypes need to be tested against these four populations to identify stable sources of resistance. The whole genome sequencing will be useful for understanding mode of action of different insecticides, mechanisms of detoxification and designing target-specific insecticides to develop appropriate strategies to manage C. partellus for sustainable crop production. The temporal distribution of mating systems among adults of diapause, non-diapause and/or ecologically diverse populations, and their behavioral and physiological consequences under a given demographic framework could be rewarding, and aid in to devising appropriate mating disruption techniques to suppress C. partellus population.

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Section: Insect-plant Interactionmentioning

confidence: 99%

Diapause in Chilo partellus: A Research Journey

Dhillon

2023

ije

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“…During coevolution, herbivores can also adapt to secondary metabolites. M. neustria is a species with melanic dimorphism (Dhillon et al, 2022). It is unknown whether males and females respond physiologically to secondary metabolites differently.…”

Section: Introductionmentioning

confidence: 99%

The Effect of some secondary metabolites on food consumption and pupal parameters of male and female Malacosoma neustria L. (Lepidoptera: Lasiocampidae) larvae

BİLGENER,

ALTUN

2024

International Journal of Secondary Metabolite

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Plants produce secondary metabolites for defense against herbivorous insects. In this study, the effects of different concentrations of quinine, nicotine, and tannic acid on food consumption and pupal parameters of the larva of a severe pest, Malacosoma neustria L. (Lepidoptera: Lasiocampidae), were investigated in 2007. Artificial diets containing 0.125%, 0.25%, and 0.5% concentrations of quinine or nicotine were prepared. In addition, diets containing 1.25%, 2.5%, and 5% tannin and a control diet without secondary metabolite were prepared. The feeding experiments revealed that the food consumption and pupal parameters of male and female larvae were different, and all parameters of female individuals were higher than those of male larvae. It has been determined that tannins cause more reductions in food consumption and pupal parameters than alkaloids in male and female individuals. We observed an increase in male larvae's pupal mass with increased concentration of nicotine to 0.5%. Nicotine did not cause a decrease in pupal parameters of larvae compared to quinine. In addition, all parameters of female individuals decreased with the addition of secondary metabolite. Although food consumption in alkaloid-containing diets was less than in the control group, there was a positive relationship between food consumption and pupal lipid and protein content. However, quinine had a more significant effect on triggering protein storage than nicotine. In diets containing tannins, more lipids were stored. A decrease was observed in the food consumption and pupal parameters of all individuals in the tannin-containing diets compared to the other diets.

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