2007
DOI: 10.1590/s1519-566x2007000100010
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Capacidade de parasitismo de Trichogramma pratissolii Querino & Zucchi (Hymenoptera: Trichogrammatidae) em hospedeiros alternativos, sob diferentes temperaturas

Abstract: -The successful use of Trichogramma as biocontrol agent depends on its mass production in laboratory, a fundamental step for any biological control program among other factors. This work investigated the parasitism capacity of Trichogramma pratissolii Querino & Zuchi (Hymenoptera: Trichogrammatidae), a new recorded Trichogramma species, parasitizing eggs of Anagasta kuehniella (Zeller) and Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae) under the temperatures of 15, 18, 21, 24, 27, 30 and 33ºC. Eggs o… Show more

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Cited by 12 publications
(11 citation statements)
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References 11 publications
(15 reference statements)
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“…The highest number of parasitized eggs occurred at 24ºC (53.0 parasitized eggs/female) and the lowest number was observed at 33ºC (23.2 parasitized eggs/female). The figures obtained in this study were higher than those reported for different species of Trichogramma and different hosts at the same temperatures, as observed by Pratissoli et al (2004), Pereira et al (2007), Zago et al (2007) and Pratissoli et al (2008), demonstrating that T. pretiosum displays a real potential for use in biological control programs of the caterpillar T. ni. Contrary to the results presented in this study, Pastori et al (2007) found that T. pretiosum, strain bonagota, is better adapted to 18ºC, a fact that is linked to adaptation of the parasitoid strains to specific climatic conditions, according to the authors.…”
Section: Resultscontrasting
confidence: 61%
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“…The highest number of parasitized eggs occurred at 24ºC (53.0 parasitized eggs/female) and the lowest number was observed at 33ºC (23.2 parasitized eggs/female). The figures obtained in this study were higher than those reported for different species of Trichogramma and different hosts at the same temperatures, as observed by Pratissoli et al (2004), Pereira et al (2007), Zago et al (2007) and Pratissoli et al (2008), demonstrating that T. pretiosum displays a real potential for use in biological control programs of the caterpillar T. ni. Contrary to the results presented in this study, Pastori et al (2007) found that T. pretiosum, strain bonagota, is better adapted to 18ºC, a fact that is linked to adaptation of the parasitoid strains to specific climatic conditions, according to the authors.…”
Section: Resultscontrasting
confidence: 61%
“…This might be directly correlated with the intrinsic characteristics of the Trichogramma strain studied, which displays differentiated responses as a function of thermal adaptability. Reinforcing such results, Zago et al (2007), studying T. pratissolii, verified an inverse correlation of the parasitism period with the temperature, observing figures between two and 10 days from 18 to 33ºC. Pratissoli et al (2009), in studies with T. acacioi on eggs of A. kuehniella and S. cerealella, found that between 20 and 35ºC, there was variation in the period of parasitism between five and 16 days.…”
Section: Resultsmentioning
confidence: 65%
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“…1). Resultados semelhantes foram relatados para outras espécies de Trichogramma (Resende & Ciociolla 1996, Pereira et al 2007, Zago et al 2007) e reforçam que a razão para a qual o parasitismo não é constante em temperaturas diferenciadas está diretamente relacionada à queda da performance das fêmeas aliada ao avanço na idade dos insetos (Pratissoli & Parra 2000, Pratissoli et al 2004, Zago et al 2007. Além disso, a espécie ou linhagem do parasitóide e do hospedeiro utilizados (Hassan & Guo 1991, Hansen & Jensen 2002, Pratissoli et al 2004) e a temperatura (Pratissoli et al 2003) podem contribuir para tais variações.…”
Section: Resultsunclassified
“…Tais observações também foram registradas por Pratissoli et al (2007), que estudaram as diferentes idades de fêmeas de T. pretiosum sobre ovos de P. xylostella e observaram redução na capacidade de parasitismo dessa espécie. Zago et al (2007) também registraram um decréscimo no parasitismo de Trichogramma pratissolii Querino & Zucchi sobre A. kuehniella e Corcyra cephalonica (Stainton) (Lepidoptera: Pyralidae), em função da idade das fêmeas.…”
Section: Methodsunclassified