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URI permanente para esta coleçãohttps://locus.ufv.br/handle/123456789/11843

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2012 - 20142

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Autor: search.filters.author.Leite, Germano Leão DemolinAssunto: search.filters.subject.Biological control

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Agora exibindo 1 - 2 de 2
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    Quality control of Trichogramma atopovirilia and Trichogramma pretiosum (Hym.: Trichogrammatidae) adults reared under laboratory conditions
    (Brazilian Archives of Biology and Technology, 2012-03) Zanuncio, José Cola; Soares, Marcus Alvarenga; Leite, Germano Leão Demolin; Sá, Veríssimo Gibran Mendes de; Ferreira, Cleidson Soares; Rocha, Silma Leite; Pires, Evaldo Martins; Serrão, José Eduardo
    The objective of this work was to assess the flight capacity, parasitism and emergence of Trichogramma atopoviriliaand two strains of T. pretiosum (Hymenoptera: Trichogrammatidae) (L1 and L2). The flight capacity of these species was assessed in test units consisting of a plastic PVC cylinder with a rigid transparent plastic circle on the upper part and an extruded polystyrene disk closing its bottom. A tube was placed in each test unit containing a card with 300 Anagasta kuehniella (Lepidoptera: Pyralidae) eggs parasitised by Trichogramma. These cards were assessed to determine the parasitism rate and adult emergence of these natural enemies. T. atopovirilia and T. pretiosum L1 presented adequate flight capacity and parasitism, in addition to high percentages of adults emerged.
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    Effects of duration of cold storage of host eggs on percent parasitism and adult emergence of each of Ten Trichogrammatidae (Hymenoptera) species
    (Florida Entomologist, 2014-03) Spínola- Filho, Paulo Roberto de Carvalho; Leite, Germano Leão Demolin; Soares, Marcus Alvarenga; Alvarenga, Anarelly Costa; Paulo, Paula Daiana de; Tuffi- Santos, Leonardo David; Zanuncio, José Cola
    Improving parasitoid mass rearing techniques is important to reduce costs of biological control programs and supply natural enemies at times of high demand. The objective of this study was to evaluate the suitability of Anagasta kuehniella (Lepidoptera: Pyralidae) eggs stored at 5 °C for different time periods as a host for Trichogrammatoidea annulata (Hymenoptera: Trichogrammatidae) and for 9 Trichogramma species (T. acacioi, T. atopovirilia, T. benneti, T. brasiliensis, T. bruni, T. demoraesi, T. galloi, T. pretiosum, and T. soaresi). The experiment had a factorial design with 10 parasitoid species, 9 host storage periods (5, 10, 15, 20, 25, 30, 35 and 40 days, and a no storage control) and 20 replications, each consisting of one card (0.4 × 2.0 cm) with 40.70 ± 0.03 eggs of A. kuehniella. Trichogrammatoidea annulata, T. acacioi, T. brasiliensis, T. bruni, T. pretiosum, and T. soaresi parasitized eggs of A. kuehniella stored up to 24 days; T. atopovirilia parasitized eggs stored up to 16 days. Trichogramma demoraesi and T. benneti parasitized eggs stored for 15 days and T. galloi parasitized eggs stored for up to 13 days. The percentage of parasitized eggs decreased when the storage period increased. Among the tested parasitoids T. acacioi parasitized eggs stored for longer periods and showed the highest percentage both of parasitism and adult emergence.