What question did this study set out to answer?

This research aims to assess how deltamethrin, cypermethrin, and chlorantraniliprole affect the population dynamics of Rhopalosiphum padi.

Evaluating the sublethal impacts of deltamethrin, cypermethrin, and chlorantraniliprole on the population growth and demographic traits of Rhopalosiphum padi (L.) (Hemiptera: Aphididae)

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Study evaluates insecticide impacts on population growth in Rhopalosiphum padi, highlighting ecological risk implications.

This research aims to assess how deltamethrin, cypermethrin, and chlorantraniliprole affect the population dynamics of Rhopalosiphum padi.
Used age-stage, two-sex life table model for analysis
Conducted experiments under laboratory conditions with LC₃₀, LC₄₀, and LC₅₀ doses
Measured developmental time, longevity, fecundity, and population fitness
Pre-adult duration increased significantly with deltamethrin exposure (18.07 days vs. 11.66 in control)
Adult longevity decreased under insecticides with deltamethrin having the most severe effect (11.52 days)
Fecundity declined notably with losser overall fit (10.63 nymphs/female under deltamethrin)
Intrinsic rate of increase (r) dropped significantly under insecticides, with deltamethrin showing the largest decline (0.097)

Kayahan et al. (2026) studied this question.

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