عنوان مقاله [English]
Introduction: The use of plant extracts is important in integrated pest management programs. Extract is a solution containing all useful plant substance including tannins, mosilajs and essences. Plant extracts can be alternatives for today’s pesticides. If these plant compounds to be safe for natural enemies in addition to be effectiveness against pests, they will be efficient Bracon hebetor say. bee is one of the most important biological control factors which can be effective in controlling larvae of many moths. Materials and Methods: In this research, the effects of acetonic and methanolic extracts of tomato leaf were studied on some biological parameters of B. hebetor under laboratory conditions (26±1ºC; 60±5% R.H., L16:D8) The experiment was done based on a complete randomized design with five replicates at Tabriz Azad University Iran, during 2018. To assess the sublethal effects of the extracts, the adult wasps were exposed to an LC25 of the extracts of tomato fruit and then demographic parameters of live wasps were studied and compared to control. Results and Discussion: The results obtained in this study revealed that the highest adult longevity (19.12 day) and fertility rate (26.67egg) were occurred in methanolic treatment. Differences between two treatments in sex ratio was significant. In acetonic treatment (0.57) it was lower than methanolic (0.94) treatment. The life expectancy of wasps, was significantly lower than control and methanolic treatment. In conclusion, our results detected that the diverse of extracts had different effects on biological parameters of B. hebetor.