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Influence of different photoperiods on the predation of Orius insidiosus Say Heteroptera, Anthocoridae on eggs of Anagasta kuehniella Zeller Lepidoptera Pyralidae Influencia de diferentes fotoperiodos na capacidade predatoria de Orius insidiosus Say Heteroptera, Anthocoridae em ovos de Anagasta kuehniella Zeller Lepidoptera, Pyralidae



Influence of different photoperiods on the predation of Orius insidiosus Say Heteroptera, Anthocoridae on eggs of Anagasta kuehniella Zeller Lepidoptera Pyralidae Influencia de diferentes fotoperiodos na capacidade predatoria de Orius insidiosus Say Heteroptera, Anthocoridae em ovos de Anagasta kuehniella Zeller Lepidoptera, Pyralidae



Revista Brasileira de Entomologia. Dezembro; 454: 283-286



The effect of different photoperiods on egg consumption of A. kuehniella by nimphs and adults of O. insidiosus was evaluated. The trials were carried out in climatic chambers, with 6 treatments at the photoperiods 9:15, 10:14, 11:13, 12:12, 13:11 and 14:10 L/D, temperature 25 plus or minus 1deg. C and RH 70 plus or minus 10%. The nymphal egg consumption increased in the successive instars of O. insidiosus, and it was affected by the different photoperiods according to the developmental phase of predator. The nymphs of 1st, 2nd, 3rd and 5th instars showed a comsumption of eggs variable according to different photophase. Egg comsumption by the 4th instar nymphs was not affected by the photophase. Egg comsumption by the adults increased with photophase. The highest egg comsumption was observed at 14 hours photophase (378.6 A. kuehniella eggs).

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