Nymphal development and feeding preference of Podisus maculiventris (Heteroptera: Pentatomidae) on eggs of Ephestia kuehniella (Lepidoptera: Pyralidae) parasitised or not by Trichogramma brassicae (Hymenoptera: Trichogrammatidae)

Brazilian Journal of Biology

H. N. Oliveira²  P. De Clercq¹  J. C. Zanuncio²  D. Pratissoli¹  E. P. Pedruzzi¹ 

[1] ,Universidade Federal de Viçosa BIOAGRO Departamento de Biologia AnimalViçosa Minas Gerais ,Brazil

关键词: Trichogramma;    predator;    feeding preference;    Trichogramma;    predador;    preferência de alimentação;   

DOI  :  10.1590/S1519-69842004000300009

来源: SciELO

【 摘 要 】

Predation by Podisus maculiventris nymphs, a predatory pentatomid, was evaluated with eggs of the flour moth Ephestia kuehniella (Pyralidae), parasitised or not by Trichogramma brassicae (pupae stage). Eggs of this pyralid were glued on rectangular cardboard and presented to nymphs of P. maculiventris as food. The pentatomid successfully reached adult stage when feeding on unparasitised eggs, indicating that flour moth eggs can be used as a factitious food for rearing this predator. Pentatomid nymphs that received only parasitised eggs died before reaching fourth instar. In choice tests, P. maculiventris showed a preference for preying on unparasitised eggs of E. kuehniella rather than those containing pupae of T. brassicae. These results show that it is possible to combine the use of P. maculiventris with releases of T. brassicae in control programs of lepidopteran pests.

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