Effectiveness of potential biological control agent Bracon hebetor (Say) (Hymenoptera: Braconidae) on Cydalima perspectalis (Walker) (Lepidoptera: Crambidae)

Authors : Hilal TUNCA, Cansu KANDİL, Damla ÇAYCİ, Benjamin COSİC, Özgür TOPRAK

Pages : 362-371

Doi:10.29050/harranziraat.1261385

View : 64 | Download : 55

Publication Date : 2023-09-27

Article Type : Research Paper

Abstract :Cydalima perspectalis insert ignore into journalissuearticles values(Walker, 1859); insert ignore into journalissuearticles values(Lepidoptera: Crambidae); is the main pest of boxwood fields in many countries. It has caused significant damage especially since 6-7 years in Türkiye. Chemical control is definitely not recommended against this pest because boxwoods are found in forest areas, parks and gardens. In this study, the potential use of the idibiont larval parasitoid Bracon hebetor insert ignore into journalissuearticles values(Say, 1836); insert ignore into journalissuearticles values(Hymenoptera: Braconidae); against the box tree moth was evaluated within the scope of biological control. Laboratory experiments were carried out with early and late instar larvae of C. perspectalis at 25±1°C, 60-70% R.H. and 16:8 insert ignore into journalissuearticles values(light: dark); conditions. The number of paralyzed and parasitized larvae, parasitism rate, number of eggs laid per female, rate of larvae and pupae were determined. Bracon hebetor, which has the ability to paralyze the host larvae, showed an insecticidal effect against the pest C. perspectalis. It was found that the number of paralyzed larvae insert ignore into journalissuearticles values(10.33±1.15); in early stage insert ignore into journalissuearticles values(3rd instar); larvae was higher than in late stage insert ignore into journalissuearticles values(5th instar); larvae insert ignore into journalissuearticles values(4.67±0.57);. On the other hand, it was determined that the number of parasitized larvae insert ignore into journalissuearticles values(14.68±1.50); and eggs laid insert ignore into journalissuearticles values(7.50±0.32); was higher in late stage insert ignore into journalissuearticles values(5th instar); larvae. Parasitism rates were found to be 33% and 73% in early and late instar larvae, respectively. This detailed biological data has been obtained to for the first time. Bracon hebetor venom showed a high toxic effect on Cydalima larvae. The results of the study showed that the parasitoid may be recommended as an alternative to chemical control against the box tree moth.
Keywords : biyolojik mücadele, Bracon hebetor, Cydalima perspectalis