1998
DOI: 10.1590/s0103-90161998000200009
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EFEITO DA TEMPERATURA NO PARASITISMO DE Trichogramma pretiosum Riley, 1879 SOBRE OVOS DE Sitotroga cerealella (Olivier, 1819)

Abstract: Avaliou-se o efeito da temperatura no parasitismo de Trichogramma pretiosum Riley, 1879 sobre ovos de Sitotroga cerealella (Olivier, 1819), para sua utilização em criações massais e/ou para o controle biológico desta traça de grãos armazenados. Os parasitóides foram mantidos sob as temperaturas de 18, 20, 22, 25, 30 e 32°C, durante 48 horas, com umidade relativa de 60±10% e fotofase de 14 horas, em todas as condições. O parasitismo foi avaliado pela contagem do número de ovos pretos (característica do parasiti… Show more

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Cited by 16 publications
(8 citation statements)
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“…They showed that the parasitism of T. pretiosum on P. xylostella eggs was concentrated in the first 24 hours under high temperatures, being 16, 12 and 14 parasitized eggs at 25, 28, and 30 o C, respectively. Other authors also reported high parasitism during the first 24 hours when studying different species or strains of Trichogramma and host species (Inoue & Parra 1998;Resende & Ciociolla 1996). This behavior might be associated with the lower longevity of the parasitoids when reared under higher temperatures compared with lower temperatures (Inoue 1997).…”
Section: Discussionmentioning
confidence: 90%
“…They showed that the parasitism of T. pretiosum on P. xylostella eggs was concentrated in the first 24 hours under high temperatures, being 16, 12 and 14 parasitized eggs at 25, 28, and 30 o C, respectively. Other authors also reported high parasitism during the first 24 hours when studying different species or strains of Trichogramma and host species (Inoue & Parra 1998;Resende & Ciociolla 1996). This behavior might be associated with the lower longevity of the parasitoids when reared under higher temperatures compared with lower temperatures (Inoue 1997).…”
Section: Discussionmentioning
confidence: 90%
“…1). Tais variações foram relatadas por Resende & Ciociolla (1996) (Sales Jr. 1992, Sá & Parra 1994, Inoue & Parra 1998. O número total de ovos de B. salubricola parasitados por T. pretiosum linhagem bonagota foi signifi cativamente superior a 18°C, sendo que o máximo alcançado foi de 35,4 ovos parasitados por fêmea.…”
Section: Resultsunclassified
“…Similar results were reported by Pratissoli et al (2004) and , who recorded that the rate of T. pretiosum parasitism varied with temperature on Plutella xylostella (L., 1758) (Lepidoptera: Plutellidae) and Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) eggs. Other authors have reported high parasitism during the first 24 hours when studying different species or strains of Trichogramma and host species (INOUE;PARRA, 1998). This behavior might be associated with the lower longevity of the parasitoids when reared under higher temperatures compared to lower temperatures (INOUE; PARRA, 1998).…”
Section: Resultsmentioning
confidence: 96%