Horticultura Brasileira (2004) 22, 754-757

Dirceu Pratissoli, Fabricio F. Pereira, Reginaldo Barros, José R.P. Parra and Cácia L.T. Pereira (2004)
Parasitismo de Trichogramma pretiosum em ovos da traça-das-crucíferas sob diferentes temperaturas
[Parasitism of Trichogramma pretiosum on diamondback moth eggs under different temperatures]
Horticultura Brasileira 22 (4), 754-757
Abstract: The parasitism capacity of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) on eggs of Plutella xylostella (L.) (Lepidoptera: Plutellidae) was studied, under temperatures of 18; 20; 22; 25; 28; 30 and 32°C aiming to evaluate the number of days with parasitism, cumulated parasitism, total number of eggs parasitized per female and their longevity. Parasitism during the first 24 hours ranged from 1.6 to 16 eggs of P. xylostella per T. pretiosum female in the range of 18 to 32°C. Cumulated egg parasitism of P. xylostella by T. pretiosum reached 80% after 2; 16; 11; 3; 5; 4 and 7 days at 18; 20; 22; 25; 28; 30 and 32°C. Higher parasitism rates were recorded at 25; 28 and 30°C while longevity of T. pretiosum females varied from 2.3 to 13.3 days under temperatures of 18 to 32°C.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Fabricio F. Pereira, Dirceu Pratissoli

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella
Trichogramma pretiosum (parasitoid)	Plutella xylostella