Sublethal Pyrethroid Insecticide Exposure Carries Positive Fitness Effects Over Generations in a Pest Insect

Scientific Reports
Aigi MargusLeena Lindström

Abstract

Stress tolerance and adaptation to stress are known to facilitate species invasions. Many invasive species are also pests and insecticides are used to control them, which could shape their overall tolerance to stress. It is well-known that heavy insecticide usage leads to selection of resistant genotypes but less is known about potential effects of mild sublethal insecticide usage. We studied whether stressful, sublethal pyrethroid insecticide exposure has within-generational and/or maternal transgenerational effects on fitness-related traits in the Colorado potato beetle (Leptinotarsa decemlineata) and whether maternal insecticide exposure affects insecticide tolerance of offspring. Sublethal insecticide stress exposure had positive within-and transgenerational effects. Insecticide-stressed larvae had higher adult survival and higher adult body mass than those not exposed to stress. Furthermore, offspring whose mothers were exposed to insecticide stress had higher larval and pupal survival and were heavier as adults (only females) than those descending from control mothers. Maternal insecticide stress did not explain differences in lipid content of the offspring. To conclude, stressful insecticide exposure has positive transge...Continue Reading

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Citations

Nov 7, 2019·Ecotoxicology·Thaís Fagundes MatioliPedro Takao Yamamoto
Oct 28, 2019·Scientific Reports·Matthias LiessSaskia Knillmann
Aug 21, 2020·Journal of Economic Entomology·R R Rix, G C Cutler
Dec 15, 2019·The Science of the Total Environment·Evgenios Agathokleous, Edward J Calabrese
Feb 27, 2021·Environmental Science and Pollution Research International·Megha KanabarSharon T Pochron
Oct 28, 2021·Environmental Science and Pollution Research International·Makoto IshimotaNaruto Tomiyama

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Methods Mentioned

BETA
methylation profiling

Software Mentioned

JAGS
R
package rjags

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