| Title: | "Effect of Diallyl Trisulfide on the Reproductive Behavior of the Grain Moth, Sitotroga cerealella (Lepidoptera: Gelechiidae)" |
| Author(s): | Chang MM; Shah S; Wu MY; Zhang SS; Wu G; Yang FL; |
| Address: | "Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China" |
| ISSN/ISBN: | 2075-4450 (Print) 2075-4450 (Electronic) 2075-4450 (Linking) |
| Abstract: | "The Angoumois grain moth, Sitotroga cerealella (Olivier, 1789) (Lepidoptera: Gelechiidae), is primarily a pest of stored products, that feeds inside the grain as larvae inducing significant economic loss in various stored commodities. Our previous studies proved that garlic essential oil and its active substances inhibit oviposition in moths. To further explore the effect on reproductive behavior and accurately interpret the results in terms of effective control of the moth population, moths were treated with diallyl trisulfide (DATS), an active substance of garlic essential oil, at a dose of 0.015 microL/L in air (LC(20), sub-lethal concentration). The results showed that fecundity and the proportion of viable eggs significantly decreased when the moths were treated with LC(20) DATS. Furthermore, female circadian mating rhythms and calling periodicity changed significantly after treatment. Compared with controls, the peak in mating occurred approximately 1 h earlier on the first day after DATS treatment, while it was significantly later on days 2 and 3. Moreover, mating frequency declined in presence of DATS compared with the controls. The percentage of females engaging in calling behavior decreased significantly with time, to less than 50%, 2 days after treatment, while a high calling percentage (>80%) was recorded for control moths on all 4 days. In addition, DATS had an inhibitory effect on the mating duration of S. cerealella. Moreover, a significant reduction was observed in the amount of sex pheromones extracted 8 h and 9 h after treatment. Our findings suggested that DATS has the potential to manipulate the moth population at LC(20) and would be an efficient alternative to synthetic insecticides for the control of pests having low toxicity to non-target organisms and ecosystems" |
| Keywords: | botanicals calling periodicity circadian mating rhythms garlic essential oil inhibiting oviposition pest management stored product protection; |
| Notes: | "PubMed-not-MEDLINEChang, Meng-Meng Shah, Sakhawat Wu, Meng-Ya Zhang, Su-Su Wu, Gang Yang, Feng-Lian eng 31871955/National Natural Science Foundation of China/ Switzerland 2019/12/29 Insects. 2019 Dec 25; 11(1):21. doi: 10.3390/insects11010021" |
