Does Bacillus thuringiensis have adverse effects on the host egg location by parasitoid wasps?
Rev. bras. entomol
; 62(4): 260-266, Oct.-Dec. 2018. graf
Article
in En
| LILACS
| ID: biblio-1045528
Responsible library:
BR1.1
ABSTRACT
ABSTRACT This study investigated the interaction between two pest biological control agents, the parasitoid wasp Trichogramma pretiosum (Hymenoptera Trichogrammatidae) and the entomopathogen Bacillus thuringiensis (Bacillales Bacillacea) (Bt). The aim of this study was to evaluate if the presence of Bt (formulated products Agree®, Dipel® and HD1 and HD11 strains) interferes in the oviposition preference of T. pretiosum to eggs of Helicoverpa zea (Lepidoptera Noctuidae). Using an olfactometry test, the eggs of H. zea were bathed with the commercial formulations, with the Bt suspensions or distilled water, and offered to the parasitoid wasps in order to evaluate parasitism. The results showed that H. zea eggs sprayed with commercial formulations and Bt strains did not interfere in the choice made by the parasitoid. The parasitoid wasp is not able to distinguish between eggs with or without B. thuringiensis treatment, independently of strains suspension or commercial formulations. Therefore, these two control agents may be used together without negative interaction.
Full text:
1
Collection:
01-internacional
Database:
LILACS
Language:
En
Journal:
Rev. bras. entomol
Journal subject:
BIOLOGIA
Year:
2018
Document type:
Article
Affiliation country:
Brazil
Country of publication:
Brazil