| Title: | Effects of aphid-induced semiochemicals from cover plants on Harmonia axyridis (Coleoptera: Coccinellidae) |
| Author(s): | Zhang L; Qin Z; Zhao X; Huang X; Shi W; |
| Address: | "Department of Entomology and MOA Key Laboratory of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is an important natural enemy of aphids. Plant species and plant health conditions can affect the behavior of H. axyridis. To determine plant effects on this lady beetle, we examined beetle responses to four cover crops: coriander (Coriadrum sativum L., Apiales: Apiaceae), marigold (Tagetes erecta L., Asterales: Asteraceae), sweet alyssum (Lobularia maritima L., Brassicales: Brassicaceae), and alfalfa (Medicago sativa L., Fabales: Fabaceae). Our goal was to better understand this predator's ovipositional behavior in response to different plants and its olfactory response to the aphid-induced volatiles from these plants. RESULTS: We found that this lady beetle did not have any significant oviposition preference among the four plant species, but H. axyridis preferred to lay eggs on the lower surface of leaves, regardless of the plant species. H. axyridis females had a significant preference for aphid-infested marigolds, but were not attracted by any of the other three cover plants or marigolds without aphid damage. Compared to the uninfested marigold plants, the emission of 12 compounds significantly increased on the aphid-infested marigolds, and two of them were attractive to H. axyridis under suitable concentrations. CONCLUSION: H. axyridis did not show any significant oviposition preference among the four cover crops. Aphid-infested marigolds can attract H. axyridis. Indole and terpinen-4-ol mediated lady beetle attraction. These synomones have potential for manipulating populations of H. axyridis as a component of conservation biological control. (c) 2022 Society of Chemical Industry" |
| Keywords: | "Animals *Aphids/physiology *Coleoptera/physiology Crops, Agricultural Female Humans Oviposition Pheromones/pharmacology Predatory Behavior Smell indole olfactory behavior ovipositional preference plant volatile terpinen-4-ol;" |
| Notes: | "MedlineZhang, Liu Qin, Zifang Zhao, Xinxin Huang, Xinzheng Shi, Wangpeng eng National Li Chanye Jishu Tixi [CARS-29-05B]/ Twelve-Five National Science and Technology Support Program of China [2014BAD16B07]/ England 2022/04/30 Pest Manag Sci. 2022 Aug; 78(8):3305-3313. doi: 10.1002/ps.6956. Epub 2022 May 14" |
