Biologia e parasitismo de Trichogramma atopovirilia Oatman & Platner e Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) em ovos de Spodoptera frugiperda (J.E. Smith) (Lepidoptera, Noctuidae)

Abstract

ABSTRACT. Biology and parasitism of Trichogramma atopovirilia Oatman & Platner and Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) on eggs of Spodoptera frugiperda (J.E. Smith) (Lepidoptera, Noctuidae). The parasitism capacity and development of Trichogramma atopovirilia Oatman & Platner and Trichogramma pretiosum Riley were studied in order to select the most suitable species to control Spodoptera frugiperda (J. E. Smith). The experiments were conducted under laboratory conditions at 25±2ºC, 70±10% RH and 14L:10D photoperiod. Both T. atopovirilia and T. pretiosum showed good development and adaptation to S. frugiperda eggs even after being reared for several generations in eggs of Anagasta kuehniella Zeller. However, T. atopovirilia females were more aggressive and showed higher specificity to the pest, with a higher parasitism capacity in eggs laid with different physical barriers and were more accepted by the natural host in comparison with A. kuehniella. Because of the higher parasitism rate and specificity of T. atopovirilia to the pest's egg this species should be given preference to control S. frugiperda.

Biologia e exigências térmicas de Trichogramma atopovirilia Oatman & Platner (Hymenoptera: Trichogrammatidae) em ovos de Diaphania hyalinata L. (Lepidoptera: Pyralidae)

“…Trabalhos análogos a esta pesquisa foram conduzidos por outros autores estudando T. atopovirilia em ovos de outros hospedeiros, como: E. aurantiana (Molina et al 2005), A. kuehniella (Nicoli et al 2004) e Spodoptera frugiperda (J.E. Smith) (Lepidoptera, Noctuidae) (Beserra & Parra 2004). A faixa de temperatura entre 22°C e 27 o C, tendo em consideração o hospedeiro e a espécie e/ou linhagem de Trichogramma, tem sido considerada a melhor para o desempenho desse parasitóide (Beserra & Parra 2004, Nicole et al 2004, Pratissoli et al 2005, o que foi ratificado pelo presente trabalho.…”

“…Smith) (Lepidoptera, Noctuidae) (Beserra & Parra 2004). A faixa de temperatura entre 22°C e 27 o C, tendo em consideração o hospedeiro e a espécie e/ou linhagem de Trichogramma, tem sido considerada a melhor para o desempenho desse parasitóide (Beserra & Parra 2004, Nicole et al 2004, Pratissoli et al 2005, o que foi ratificado pelo presente trabalho. Temperaturas fora da faixa ideal interferem nas características biológicas de Trichogramma.…”

<b>Age and density of eggs of <i>Helicoverpa armigera</i> influence on <i>Trichogramma</i> pretiosum parasitism

“…When successive generations are kept in the same host, the parasitoid acquires a pre-imaginary conditioning which delays the acceptance of new hosts (Siqueira, Bueno, Bueno, & Vieira, 2012). Nevertheless, the genetic variability of Trichogramma results in aggressive females middling with greater acceptance and ability of parasitism in postures with different physical barriers (Beserra & Parra, 2004).…”

Identification of suitable Trichogramma sp. and working-out dosages for management of Brinjal Shoot and Fruit Borer under laboratory condition

“…In an earlier studies in the Philippines, Alpuerto (1984) reported that The results were showing more parasitization when compared with the study reported by Alpuerto (1984) from Philippines that parasitism by T. chilonis ranged from 34.6 to 51.3 per cent on L. orbonalis eggs and Nafus and Schreiner (1986) were of the opinion that T. chilonis is the most important natural enemy attacking the pyralid pests. Trichogramma viability is a feature closely related to the parasitoid host resemblance (Bezerra and Parra, 2004). In Trichogramma production, quality control considers practicality as acceptable when the rate of borne adults exceeds 85 per cent (Navarro, 1998).…”