Alternative Prey and Artificial Diet of the Multicolored Asian Lady Beetle Harmonia axyridis: A Review
Qingqiu Zeng, Rongrong Gao, Lamei Zheng, Kun Xue, Zhentao Ren

TL;DR
This paper reviews artificial diets for the lady beetle Harmonia axyridis to improve large-scale rearing for pest control.
Contribution
The study systematically analyzes artificial diet formulations to identify key factors for efficient and cost-effective rearing of Harmonia axyridis.
Findings
Current reliance on live aphids for rearing H. axyridis is costly and inefficient.
Artificial diets can be optimized to support the beetle's entire life cycle.
Nutritional composition of natural prey is critical for developing effective artificial diets.
Abstract
Harmonia axyridis is a vital natural predator capable of preying upon numerous agricultural pests and are in high demand for biological control. However, large-scale provision of these beetles currently relies heavily on rearing live aphids as a food source, a method characterized by high costs, low efficiency, and unstable supply, thereby limiting the beetles’ widespread adoption. To overcome this bottleneck, we comprehensively reviewed and analyzed extensive literature on artificial diets for lady beetles. Statistical evaluations were conducted on the rearing efficacy of diverse feed formulations. Our work aims to identify key determinants of effective artificial diets, providing a solid foundation for optimizing rearing protocols and enabling large-scale propagation. As an important natural enemy insect, Harmonia axyridis has significant biological control effects on a variety of…
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Taxonomy
TopicsInsect-Plant Interactions and Control · Insect Pest Control Strategies · Forest Insect Ecology and Management
