ASSESSMENT OF THE LETHAL AND SUBLETHAL EFFECTS OF SOME NOVEL PESTICIDES ON Trichogramma chilonis (Ishii) (TRICHOGRAMMATIDAE: HYMENOPTERA)
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Date
2008
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Environmental Sciences
Abstract
Effects of some novel pesticides on emergence of the Trichogramma chilonis
(Ishii) from Sitotroga cerealella Olivier eggs based on field dose demonstrated fipronil
as harmful in the egg, but was moderately harmful and harmless in the larval and
pupal stage treatments, respectively. Acetamiprid and spinetoram were slightly and
moderately harmful, respectively, in all three immature stages. Abamectin was moderately
harmful in egg and larval stages but was slightly harmful in the pupal stage.
The pesticides effect on parasitism by T. chilonis emerged from the egg treated
at field dose showed that both acetamiprid and fipronil when treated against larvae
and pupae, were slightly harmful; however, acetamiprid was harmful in the egg stage
treatment. While abamectin was moderately harmful when treated against pupae.
Parasitism of treated host eggs by T. chilonis (no-choice test) based on field
dose showed that acetamiprid, spinetoram, fipronil, abamectin and haloxyfop-p-methyl
were slightly harmful, while spiromesifen was moderately harmful for parasitism.