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  • Hormesis and insects: Effec...
    Cutler, G. Christopher; Amichot, Marcel; Benelli, Giovanni; Guedes, Raul Narciso C.; Qu, Yanyan; Rix, Rachel R.; Ullah, Farman; Desneux, Nicolas

    The Science of the total environment, 06/2022, Letnik: 825
    Journal Article

    Insects in agroecosystems contend with many stressors – e.g., chemicals, heat, nutrient deprivation – that are often encountered at low levels. Exposure to mild stress is now well known to induce hormetic (stimulatory) effects in insects, with implications for insect management, and ecological structure and function in agroecosystems. In this review, we examine the major ecological niches insects occupy or guilds to which they belong in agroecosystems and how hormesis can manifest within and across these groups. The mechanistic underpinnings of hormesis in insects are starting to become established, explaining the many phenotypic hormetic responses observed in insect reproduction, development, and behavior. Whereas potential effects on insect populations are well supported in laboratory experiments, field-based hypothesis-driven research on hormesis is greatly lacking. Furthermore, because most ecological paradigms are founded within the context of communities, entomological agroecologists interested in hormesis need to ‘level up’ and test hypotheses that explore effects on species interactions, and community structure and functioning. Embedded in this charge is to continue experimentation on herbivorous pest species while shifting more focus towards insect natural enemies, pollinators, and detritivores – guilds that play crucial roles in highly functioning agroecosystems that have been understudied in hormesis research. Important areas for future insect agroecology research on hormesis are discussed. Display omitted •Insects are prominent, crucial, and exposed to many stressors in agroecosystems.•Mild chemical, heat, or nutrition stress can stimulate insects hormetically.•Insect herbivores, predators, parasitoids, detritivores and pollinators may be stimulated.•Multiple areas of insect-hormesis-agroecology remain to be explored.