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<p>Green lacewings (Chrysopidae; Neuroptera) plays a crucial role as predators against insect pests in diverse cropping systems. Larval chrysopids are predatory on mealybugs, aphids, scales, whiteflies, mites and eggs of many arthropods. Adults are palynoglycophagous and feed on nectar, pollen, and honeydew secreted by aphids. Many insects cannot synthesize necessary vitamins and amino acids on their own and depend on gut microbes. Microbes associated with chrysopid gut help them with balanced nutrition and ecological fitness to withstand extreme stresses, especially adult gut microbiota, which constitutes an indispensable part of nutrients in addition to reproduction. Except&#xa0;for yeast, microbes such as bacteria in the chrysopid larval and adult gut have not been extensively studied. This review aims to seek a comprehensive overview of the gut microbes present in the chrysopids and their role in improving the fitness of chrysopids through adequate nutrition. This will pave the way for further research on understanding the microbe-mediated metabolic activities, their role in toxin production, and the development of probiotic feed from the novel gut microbiota for improving the productivity of laboratory-reared chrysopids used in augmentative biological control of major pests in agricultural ecosystems.</p> Graphical abstract <p></p>

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Unveiling the diversity of gut microbes in green lacewings (Chrysopidae: Neuroptera) and their role as protagonist in nutrition

  • 期刊论文

  • 发表日期：

    2025年3月24日

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  • N. Karkuzhali,
  • Y. S. Johnson Thangaraj Edward,
  • N. Chitra,
  • M. Senthilkumar,
  • J. Ramalingam

摘要

Green lacewings (Chrysopidae; Neuroptera) plays a crucial role as predators against insect pests in diverse cropping systems. Larval chrysopids are predatory on mealybugs, aphids, scales, whiteflies, mites and eggs of many arthropods. Adults are palynoglycophagous and feed on nectar, pollen, and honeydew secreted by aphids. Many insects cannot synthesize necessary vitamins and amino acids on their own and depend on gut microbes. Microbes associated with chrysopid gut help them with balanced nutrition and ecological fitness to withstand extreme stresses, especially adult gut microbiota, which constitutes an indispensable part of nutrients in addition to reproduction. Except for yeast, microbes such as bacteria in the chrysopid larval and adult gut have not been extensively studied. This review aims to seek a comprehensive overview of the gut microbes present in the chrysopids and their role in improving the fitness of chrysopids through adequate nutrition. This will pave the way for further research on understanding the microbe-mediated metabolic activities, their role in toxin production, and the development of probiotic feed from the novel gut microbiota for improving the productivity of laboratory-reared chrysopids used in augmentative biological control of major pests in agricultural ecosystems.

Graphical abstract