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First record of Trichogramma pretiosum parasitizing Iridopsis panopla eggs in eucalyptus in Brazil
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First record of Trichogramma pretiosum parasitizing Iridopsis panopla eggs in eucalyptus in Brazil
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First record of Trichogramma pretiosum parasitizing Iridopsis panopla eggs in eucalyptus in Brazil
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Journal Article
First record of Trichogramma pretiosum parasitizing Iridopsis panopla eggs in eucalyptus in Brazil
2024
Overview
Iridopsis panopla Prout (Lepidoptera: Geometridae) is an important lepidopteran defoliator of eucalyptus. I. panopla eggs were collected naturally in a commercial plantation of Eucalyptus urograndis W. Hill (Myrtaceae) in Três Lagoas, Mato Grosso do Sul, Brazil. After nine days, the natural emergence of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) occurred from I. panopla eggs. Parasitism was evaluated under laboratory and field conditions, this being the first record for eucalyptus in Brazil. Based on the biological characteristics evaluated in the laboratory, I. panopla eggs are suitable for T. pretiosum reproduction. The obtained percentage parasitism, particularly when 72,000 adult females of T. pretiosum per hectare were employed, provide valuable insights regarding the potential of T. pretiosum as an effective biological control agent against I. panopla in eucalyptus plantations.
Iridopsis panopla Prout (Lepidoptera: Geometridae) é um importante desfolhador de eucalipto. Ovos de I. panopla foram coletados naturalmente em uma plantação comercial de Eucalyptus urograndis, em Três Lagoas, Mato Grosso do Sul, Brasil. Após nove dias, ocorreu a emergência natural de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) nos ovos de I. panopla. O parasitismo foi avaliado em condições de laboratório e campo, sendo este o primeiro registro para eucalipto no Brasil. Com base nas características biológicas avaliadas em laboratório, os ovos de I. panopla são adequados para a reprodução de T. pretiosum. As taxas de parasitismo obtidas, especialmente quando foram empregadas 72.000 fêmeas adultas de T. pretiosum por hectare, fornecem informações valiosas sobre o potencial de T. pretiosum como um agente de controle biológico eficaz contra I. panopla em plantações de eucalipto.
