Effects of aphid honeydew sugars on the longevity and fecundity of the aphidophagous gall midge Aphidoletes aphidimyza |
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| Institution: | 1. Entomological Laboratory, Faculty of Agriculture, Kinki University, 3327-204, Nakamachi, Nara 631-8505, Japan;2. Center for Ecological Research, Kyoto University, Otsu, Shiga 520-2113, Japan;1. Raitech Ltd., Kununurra, WA 6743, Australia;2. Department of Primary Industries and Regional Development, South Perth, WA 6151, Australia;3. Department of Primary Industries and Regional Development, Kununurra, WA 6743, Australia;4. Institute of Agriculture, Faculty of Science, The University of Western Australia, Crawley, WA 6009, Australia;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;2. College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225007, China;3. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;1. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China;2. College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225007, P.R.China;3. Lixiahe Regional Institute of Agricultural Sciences of Jiangsu, Yangzhou 225007, P.R.China;4. Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, P.R.China;1. Zoological Institute, KU Leuven, Naamsestraat 59, B-3000 Leuven, Belgium;2. National Changhua University of Education, Department of Biology, Changhua 50007, Taiwan, R.O.C;1. Programa de Pós-Graduação em Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), Brasília, Federal District, Brazil;2. Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília (UnB), Brasília, Federal District, Brazil;3. Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, Federal District, Brazil |
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| Abstract: | The predatory gall midge Aphidoletes aphidimyza, which is used for augmentative biological control of aphids in greenhouses, uses aphid honeydew as an energy source. Currently, Rhopalosiphum padi on barley plants and Melanaphis sacchari on sorghum plants are used as the banker plant systems for A. aphidimyza to control Aphis gossypii on eggplant in Japan. We analyzed the sugar components of the honeydew of these three species by HPLC. The major components of honeydew were sucrose, fructose, and melezitose for A. gossypii; glucose and fructose for R. padi; and glucose, fructose, and melezitose for M. sacchari. Maltose and trehalose were minor components of the honeydew of these species. We investigated the influence of sugars, including three artificial aphid honeydews, six sugar components, and distilled water, on the longevity of unmated A. aphidimyza. Both females and males attained the greatest longevity on sucrose and artificial honeydew of A. gossypii. Mean longevities of both females and males were shortest when they were provided only with water. We conducted another experiment in which a mated female was released in a cage with an eggplant seedling infested with A. gossypii and fed with sucrose or only water. Females fed with sucrose lived significantly longer and had higher lifetime fecundity than those fed only water. |
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| Keywords: | Eggplant Sucrose |
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