Host-Seeking Stimulants (Kairomones) for the Egg Parasite, Trichogramma evanescens1 , 2 , 3

The Response Specificity of Trichogramma Egg Parasitoids towards Infochemicals during Host Location

“…An arrestment to such deposits on a host plant was shown for T. brassicae (Fatouros et al, 2005a). Jones et al (1973) showed that T. evanescens is able to detect tricosane from adult host scales (Heliothis zea), which stimulates parasitization. In our study, leaf disks from plants with eggs and deposits older than 24 h did not arrest the wasps.…”

Manipulation of Natural Enemies in Agroecosystems: Habitat and Semiochemicals for Sustainable Insect Pest Control

“…from 13% to 22% by spraying an extract from the host (moth) scales or synthetic kairomones onto soybean plants. The moth scales contain tricosane, which was found to be the main source of attraction (Jones et al, 1973). These field results were obtained, however, only at high host densities.…”

In Vitro Rearing of Egg Parasitoids

“…Despite all the indications that Trichogramma females would use chemical cues in the host selection process (Jones et al 1973, Zaborski et al 1987, see also Chapter 4), high levels of parasitization on artificial eggs were obtained for Trichogramma galloi Zucchi and T. pretiosum without any particular chemical treatment (Cônsoli and Parra 2002) (Fig. 11.3a, b).…”