Evaluating the combination of a parasitoid and a predator for biological control of seed beetles (Chrysomelidae: Bruchinae) in stored beans |
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| Affiliation: | 1. Interdisciplinary Research Centre for BioSystems, Land Use and Nutrition (IFZ), Department of Applied Entomology, Institute of Insect Biotechnology, University of Giessen, Heinrich-Buff-Ring 26–32, 35392, Giessen, Germany;2. Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Department of Bioresources, Winchesterstrasse 2, 35394, Giessen, Germany;3. Humboldt-Universität zu Berlin, Division Urban Plant Ecophysiology, Faculty of Life Sciences, Lentzeallee 55/57, 14195 Berlin, Germany;1. The New Zealand Institute for Plant & Food Research Ltd, Private Bag 92169, Auckland 1142, New Zealand;2. 2B West Belt, Lincoln, Christchurch 7608, New Zealand;3. 20 Westminster Road, Mt Eden, Auckland 1024, New Zealand;4. Better Border Biosecurity (B3), New Zealand;1. The University of Queensland, School of Agriculture and Food Sciences, St Lucia, Queensland, 4072, Australia;2. Nanjing Agricultural University, College of Resources and Environmental Sciences, Nanjing, Jiangsu, 210095, China;3. The University of Queensland, Centre for Soil and Environmental Sciences, School of Agriculture and Food Sciences, St Lucia, Queensland, 4072, Australia;1. Henan University of Technology, Collaborative Innovation Center of Henan Grain Crops, Henan Collaborative Innovation Center of Grain Storage and Security, Zhengzhou, 450001, China;2. Academy of State Administration of Grain, No. 11 Baiwanzhuang Street, Beijing, China;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;2. MoA-CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China;3. CABI East Asia, Beijing, China;1. Department of Life Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago;2. Department of Food Production, The University of the West Indies, St. Augustine, Trinidad and Tobago;1. Department of Entomology, Washington State University, Pullman, WA 99164, USA;2. Department of Entomology, University of Georgia, Athens, GA 30602, USA;3. Department of Entomology, Texas A&M University, College Station, TX 77843, USA |
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| Abstract: | The two seed beetle species Acanthoscelides obtectus and Callosobruchus maculatus are among the economically most important pests of stored legume seeds world-wide. Insect natural enemies for biological control were considered in IPM strategies to control bean weevils in store. In this contribution, the control effect by a combination of the parasitoid Anisopteromalus calandrae and the predator Xylocoris flavipes on both seed beetle species was evaluated in a laboratory study on black eyed beans Vigna unguiculata. The combination of parasitoid and predator was most effective against both species of seed beetles. However, in C. maculatus the combination was not significantly more effective compared to A. calandrae alone, suggesting a poor effect on adults and no effect on eggs and larvae by X. flavipes. In the case of A. obtectus, the suppressive effect by the combination of the parasitoid and the predator was high. For C. maculatus, germination of black eyed beans was approximately three times higher when both natural enemies were present. The combination of A. calandrae and X. flavipes is considered a promising component for integrated control of A. obtectus. |
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| Keywords: | Stored product protection Legume seeds Biological control Coleoptera Hymenoptera Heteroptera |
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