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Greenhouse Whitefly (Homoptera: Aleyrodidae) Predation and Tomato Fruit Injury by the Zoophytophagous Predator Dicyphus tamaninii (Heteroptera: Miridae)
Editor(s): Oscar Alomar; Robert N. Wiedenmann
Author(s): Oscar Alomar, Ramon Albajes
Print Publication Date: 1996

Dicyphus tamaninii Wagner and Macrolophus caliginosus Wagner (Heteroptera: Miridae) are 2 native generalist predatory bugs being successfully used for management of greenhouse whitefly, Trialeurodes vaporariorum (Westwood), in outdoor tomato crops in Catalonia, Spain. However D. tamaninii also is phytophagous and occasionally feeds on tomato fruits. Damage to fruits can be related to a shortage of alternative insect prey. This hypothesis was the basis for a decision chart which allows the conservation of D. tamaninii to a level where ii may excessively control whiteflies and start damaging the fruit. Here we report on the results of a 4-yr evaluation of the decision chart. The implications of zoophytophagous behaviour in IPM are discussed.

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