Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2001) 125, 551-556

T.A. Giustolin, J.D. Vendramim, S.B. Alves, S.A. Vieira and R.M. Pereira (2001)
Susceptibility of Tuta absoluta (Meyrick) (Lep., Gelechiidae) reared on two species of Lycopersicon to Bacillus thuringiensis var. kurstaki
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 125 (9-10), 551-556
Abstract: The mortality of Tuta absoluta (Meyrick) larvae that were fed on leaves of Lycopersicon hirsutum f. glabratum (PI 134417, insect resistant) and Lycopersicon esculentum (cultivar Santa Clara, susceptible) treated with Bacillus thuringiensis var. kurstaki (Btk) was evaluated. Feeding on untreated PI 134417 was detrimental to the survival of T. absoluta larvae. When Btk was applied to the two Lycopersicon plants, mortality occurred in all T. absoluta instars. Application of Btk on tomato leaves had synergistic or additive effects with the resistant genotype on larval survival. This effect was dependent on the instar at which the larvae were fed Btk-treated leaves. Delayed Btk application may cause higher insect mortality if the insects become more susceptible to the pathogen after a longer period of feeding on the resistant crop.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Roberto M. Pereira, José Djair Vendramim, Sérgio Batista Alves

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
application technology

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Phthorimaea absoluta	Tomato (Solanum lycopersicum)
Bacillus thuringiensis var. kurstaki (entomopathogen)	Phthorimaea absoluta	Tomato (Solanum lycopersicum)