Neotropical Entomology (2007) 36, 84-89

Hugo B. Zago, Dirceu Pratissoli, Reginaldo Barros, Manoel G.C. Gondim Jr. and Hugo J.G. dos Santos Jr. (2007)
Capacidade de parasitismo de Trichogramma pratissolii Querino and Zucchi (Hymenoptera: Trichogrammatidae) em hospedeiros alternativos, sob diferentes temperaturas
[Parasitism capacity of Trichogramma pratissolii Querino and Zucchi (Hymenoptera: Trichogrammatidae) on alternative hosts, under different temperatures]
Neotropical Entomology 36 (1), 84-89
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 and 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 of these hosts were offered to newly emerged females during 24h. This procedure was repeated daily for each female and each temperature up to female death, in order to estimate daily and accumulated parasitism, and female longevity. On both hosts, the daily parasitism decreased as function of the female age. Under all temperatures studied and both hosts the highest rate of parasitism was observed during the first 24h of host exposure, and reached 80% of total parasitism in the 4^th and 3^rd days when parasitizing A. kuehniella and C. cephalonica, respectively. On both hosts, the highest parasitism rate was observed under temperatures from 21ºC to 27ºC. Average longevities of T. pratissolii females deprived of food emerging from A. kuehniella and C. cephalonica lived for 1.0 and 8.9 days when reared at 15ºC e 33ºC, respectively. The results indicate that eggs of A. kuehniella and C. cephalonica and temperatures from 21ºC to 27ºC were appropriate to rear T. pratissolii.
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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:
environment/habitat manipulation
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Ephestia kuehniella
	Corcyra cephalonica
Trichogramma pratissolii (parasitoid)