Effect of some environmental parameters on the development of the wheat weevil, Sitophilus granarius (Coleoptera: Curculionidae) under laboratory conditions

Mehmet Karakas

Effect of some environmental parameters on the development of the wheat weevil, Sitophilus granarius (Coleoptera: Curculionidae) under laboratory conditions

Authors
Mehmet Karakas

Abstract
Adults of laboratory population of the wheat weevil, Sitophilus granarius was exposed at the temperature of 20 º, 25 º and 30 ºC and relative humidity of 60%, 65% and 70% RH to determine egg lying, larvae, pupae and adult emergence time and progeny production/reduction in laboratory culture at mentioned environmental conditions. Three replications were used for each application. Twenty pairs of adults were released to get eggs. Data regarding oviposition, fertility and adult emergence was recorded on daily basis. Sitophilus granarius has great influence of temperature on its life period. It exhibited high appearance at high temperature in comparison with low temperature. Relative humidity has also excessive influence on the development of S. granarius.

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