Dicyphus hyalinipennis Burm. (Heteroptera: Miridae): a potential biological control agent for glasshouse pests in Hungary | [Dicyphus hyalinipennis Burm. (Heteroptera: Miridae): agent potentiel de lutte biologique contre les ravageurs de serre en Hongrie]
1999
Ceglarska, E.B. ((Georgikon Faculty of Agriculture, Keszthely (Hungary)))
Since 1995 a mirid bug unknown for the Hungarian fauna has been observed to migrate regularly in the summer into greenhouses with tomato grown under conditions of low insecticide pressure, multiply there in high rates and effectively control the most noxious pest Trialeurodes vaporariorum. In order to evaluate the usefulness of the species (identified as Dicyphus hyalinipennis Burm.) for biological control, its main biological features, prey range and predation capacity were studied. Female daily egg-production, developmental time of nymphal stages, and life-longevity of adults were determined on tomato, tobacco and cucumber and glasshouse whitefly as prey. Potential daily prey-consumption served as parameter for evaluating the predation capacity of D. hyalinipennis. Nymphs and adults of the predator were offered different developmental stages of T. vaporariorum, Bemisia tabaci and Tetranychus urticae on tomato, and Aphis gossypii alatae and apterous forms on cucumber, in no-choice tests. The reproduction ability differed in the case of number of eggs laid and number of emerged nymphs: the highest averages were obtained on tobacco, the lowest on cucumber. No significant differences were observed between host plants regarding either the nymphal development period or adult longevity. High average daily prey consumption rates indicate that Dicyphus hyalinipennis Burm. may be a promising biological control agent
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