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Functional response of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs: effect of host age



Functional response of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) to Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs: effect of host age



Anais da Sociedade Entomologica do Brasil 29(1): 85-93



The functional response of Trichogramma pretiosum Riley parasitizing Tuta absoluta (Meyrick) eggs was studied on tomatoes IPA-5 for individual females at 12-36, 36-60 and >60 h old eggs during a one-day exposition time. The handling time (Th=0.77 h) and attack rate (a'=0.80 h-1) were obtained from the linearization of parasitism by means of Woolf's equation. Based on these results, the functional response fitted Type II, but only when eggs were 12-36 h old.

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