Data from: A parasitoid wasp allied with an entomopathogenic virus to control Tuta absoluta

Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is a major
threat to worldwide tomato production, and sustainable management methods
are needed. Betabaculovirus phoperculellae (PhopGV) and
the parasitoid wasp Necremnus tutae Ribes &
Bernardo (Hymenoptera: Eulophidae) were identified as promising biocontrol
agents of this pest. Since the virus is most effective against first
instar larvae, whereas the parasitoid targets older ones, combining both
agents could result in increased pest control. We conducted a replicated
semi-field experiment to evaluate the control efficacy of N.
tutae and PhopGV when used alone and in combination
against T. absoluta and their compatibility over an
entire growth period. Combining the two agents achieved the highest larval
(−24 %) and crop damage (−29 %) reduction cumulated over the entire
experiment. However, there was no significant additive effect of the two
agents. At the end of the trial, which coincided with the emergence of the
third generation of T. absoluta adults, using the virus
alone resulted in the strongest reduction of adult density (−78 %),
followed by the virus-parasitoid combination (−59 %). No negative effect
of the virus was recorded on the parasitoid population. Our results
demonstrate the compatibility and potential of N.
tutae and PhopGV to reduce population growth and crop damage
of T. absoluta under semi-field conditions. While more research
is needed, our findings provide important insights into an innovative
combination of biocontrol agents, thereby contributing to more sustainable
agriculture.