| Lethality effect of Carbon monoxide on Sitophilus oryzae L., Tribolium castaneum (Herbst) and Cryptolestes ferrugineus (Stephens) under warehouse conditions |
| Paper ID : 1173-3IICE (R1) |
| Authors: |
|
Reza Sadeghi * Department of Entomology and Plant Pathology, Collage of Aburaihan, University of Tehran, Tehran, Iran |
| Abstract: |
| Stored product insect pests are important economically and usually require chemical control to prevent their damage. Due to resistance reports of some stored pests to phosphine and methyl bromide, it is necessary to replace these chemicals with novel and suitable compounds. Therefore, a research was carried out to evaluate the toxicity of carbon monoxide on three important stored product insects viz. All of three species of Sitophilus oryzae, Tribolium castaneum and Cryptolestes ferrugineus on stored date, wheat and rice under warehouse conditions. The toxicity and lethal impact of carbon monoxide on the S. oryzae, T. castaneum and C. ferrugineus was determined in different depths (50, 100 and 150 cm) and different foodstuffs (date, wheat and rice) after 24 h of exposure. Calculated R2 values showed that, level of 50 % of carbon monoxide caused 90%, 70% and 50% mortality on S. oryzae in rice, T. castaneum in date and C. ferrugineus in rice, respectively. Factorial experiments with carbon monoxide using S. oryzae and T. castaneum adults revealed significant interactions between foodstuff‘s type and depth. Moreover, omega square (2) values for foodstuff type and foodstuff depth were calculated as 0.002 and 0.04, respectively, which proved that the latter is more important compared with the former in preventing insect's mortality response. |
| Keywords: |
| Carbon monoxide, foodstuff , Mortality, Stored product insect |
| Status : Paper Accepted (Poster Presentation) |
