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Prey preference, interaction with selected natural enemies, and alternative nutritional sources of the mirid bug Dicyphus tamaninii Wagner

Author: Ghabeish, I.
Author: Saleh, A.
Author: Dababat, A.A.
Year: 2010
ISSN: 1300-011X
Abstract: The present study aimed to investigate the prey preference of the omnivorous bug Dicyphus tamaninii Wagner (Heteroptera: Miridae) among 5 different prey species, and its interaction with 3 different natural enemies commonly used in greenhouses. Moreover, the survival duration of the predator was studied in response to different nutritional sources. In multi-choice trials all developmental stages of the predator tested, namely N3, N5, and adult female, showed a clear preference for Aphis gossypii Glover over other prey species offered. Nonetheless, a considerable number of Tetranychus urticae Koch, Frankliniella occidentalis (Pergande), and Trialeurodes vaporariorum (Westwood) were also consumed. Myzus persicae (Sulzer) was the least preferred by all the predatory stages tested. In a separate experiment, D. tamaninii was able to complete its development from N1 to adult stage in an average of 21 days, with 20% mortality, when offered only T. urticae as prey.As testing all of the potential interactions with other beneficial arthropods is not practical, the present study focused on 3 natural enemies most likely to be disrupted by a possible release of D. tamaninii in a greenhouse; these were Amblyseius cucumeris Oudenmans, Phytoseiulus persimilis Athias-Henrriot, and Aphidius colemani Viereck (A. gossypii mummies), in the presence of unparasitized A. gossypii nymphs. The results show that D. tamaninii mostly attacked unparasitized A. gossypii first. Moreover, an average of only 3.8 A. cucumeris, 2.6 P. persimilis, and 0.2 A. colemani individuals day?1 female?1 were attacked. Furthermore, the results show that D. tamaninii females were able to survive for 41.2, 14.5, 9.8, and 3.8 days when offered only A. gossypii, honey emulsion, cucumber plant, or no food, respectively.
Format: PDF
Language: English
Publisher: The Scientific and Technology Research Council of Turkey
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Region: Global
Pages: 415-420
Issue: 5
Volume: 34
DOI: 10.3906/tar-0902-45
Keywords: Prey Preference
Publisher URI:
Journal: Turkish Journal of Agriculture and Forestry

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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