Eishabrawy, H. (2002). EFFECT OF CARBON DIOXIDE CONCENTRATION IN AIR ON SOME BIOLOGICAL ASPECTS OF THE ONION BULB FLY, Eumerus vestitus BEZZI (SYRPHIDAE, DIPTERA). Journal of Plant Protection and Pathology, 27(10), 7093-7100. doi: 10.21608/jppp.2002.255366
H. A. Eishabrawy. "EFFECT OF CARBON DIOXIDE CONCENTRATION IN AIR ON SOME BIOLOGICAL ASPECTS OF THE ONION BULB FLY, Eumerus vestitus BEZZI (SYRPHIDAE, DIPTERA)". Journal of Plant Protection and Pathology, 27, 10, 2002, 7093-7100. doi: 10.21608/jppp.2002.255366
Eishabrawy, H. (2002). 'EFFECT OF CARBON DIOXIDE CONCENTRATION IN AIR ON SOME BIOLOGICAL ASPECTS OF THE ONION BULB FLY, Eumerus vestitus BEZZI (SYRPHIDAE, DIPTERA)', Journal of Plant Protection and Pathology, 27(10), pp. 7093-7100. doi: 10.21608/jppp.2002.255366
Eishabrawy, H. EFFECT OF CARBON DIOXIDE CONCENTRATION IN AIR ON SOME BIOLOGICAL ASPECTS OF THE ONION BULB FLY, Eumerus vestitus BEZZI (SYRPHIDAE, DIPTERA). Journal of Plant Protection and Pathology, 2002; 27(10): 7093-7100. doi: 10.21608/jppp.2002.255366
EFFECT OF CARBON DIOXIDE CONCENTRATION IN AIR ON SOME BIOLOGICAL ASPECTS OF THE ONION BULB FLY, Eumerus vestitus BEZZI (SYRPHIDAE, DIPTERA)
Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt.
Abstract
The 2nd, 3'd instar larvae, 3 and 8 days old pupae of the onion bulb fly, E. vestitus were exposed to 3 different concentrations of CO2 in air for 24, 48 and 72 hr. The rate of mortality in all treatments was positively correlated with C02-concentration air and the exposure period . Treatments of the 2nd and 3'd instar larvae resulted increasing the larval duration while the rate of pupation was reduced by increasing the C02 concentration and/or the exposure period. Also, the pupal duration was increased while the rate of adult emergence was greatly reduced.
Treatments of 3 and 8 days old pupae resulted increasinq the pupal duration but the percent of adult emergence was decreased by increasing the C02 concentration and/or the exposure period. In general, the pupae were more tolerant than the larvae and the 8 days old pupae were more sensitive than the 3 days pupae.
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