Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Life history traits and host-killing rate of Neochrysocharis formosa on Tuta absoluta.

Abstract

To improve the biological control of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), we studied the life history traits and host-killing rate of Neochrysocharis formosa (Westwood) (Hymenoptera: Eulophidae) on T. absoluta at 25 ± 0.5°C, 70 ± 5% RH and a L:D 14:10 photoperiod. The parasitoid was able to parasitize and host feed on the first, second and third instar host larvae with preference to the second instar. Life history traits and host-killing parameters were highest on the second instar host larvae compared to the first or third instar. The host-killing rate of the parasitoid was much higher than the intrinsic rate of increase. N. formosa appeared to be a potential biocontrol agent of T. absoluta and would supplement its biological control in tomato involving other biocontrol agents like Nesidiocoris tenuis (Reuter) and Necremnus spp.