EFFECT OF CARBON DIOXIDE IN AIR ON DIFFERENT STAGES OF THE RICE WEEVIL SITOPHILUS ORYZAE (L.) (CURCULIONIDAE: COLEOPTERA) | ||
| Egyptian Journal of Agricultural Research | ||
| Article 11, Volume 73, Issue 1, March 1995, Pages 119-126 PDF (1.61 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1995.433186 | ||
| Authors | ||
| ESAM E. OMAR1; MOHAMED Y. HASHEM1; ISMAIL I. ISMAIL2 | ||
| 1Plant Protection Research Institute, Agriculture Research Centre, Dokki, Giza, Egypt | ||
| 2Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt | ||
| Abstract | ||
| The rice weevil Sitophilus oryzae (L.) was exposed to CO2 concentrations of 15%, 30%, 45%, 55%, 65% and 75% in air at 25°C and 70% R.H. Eggs, larvae, pupae and adults showed different susceptibilities. 75% CO2 in air had produced 100% mortality for both adult and developmental stages after 4 days from exposure. The larvae were the most susceptible stage, while pupae were the most tolerant. Eggs and adults were more susceptible compared with the pupal stage. | ||
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