Anais da Sociedade Entomológica do Brasil (1998) 27, 109-115

Dirceu Pratissoli, José E.M. Pezzopane, Marlon D.D. Esposti, Cleir L. Bertazo and José M. Fornazier (1998)
Estimativa do Número de Gerações de Trichogramma pretiosum Riley na Traça do Tomateiro Tuta absoluta (Meyrick), com Base nas Exigências Térmicas
[Number of Trichogramma pretiosum Riley generations in Tuta absoluta (Meyrick), related to thermal requirements]
Anais da Sociedade Entomológica do Brasil 27 (1), 109-115
Abstract: A study was carried out in the laboratory to determine the number of generations of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) parasitizing Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs, considering averages of air temperatures for 24 seasons in Alegre, ES. The lower threshold temperature and thermal constant were 13.0 °C and 131 degree-days, respectively. The average number of generations of T. pretiosum estimated for each tomato cycle (90 days) was 7.7 generations, ranging from 9.2 in the summer to 6.0 in the winter.
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(original language: Portuguese)
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Database assignments for author(s): Dirceu Pratissoli

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phthorimaea absoluta		Brazil (south)
Trichogramma pretiosum (parasitoid)	Phthorimaea absoluta		Brazil (south)