Abstract
Known as vector arthropods, mosquitoes transmit several types of diseases to human. Applied vector programmes worldwide against mosquitoes have different agents such as microorganisms, chemicals, natural enemies, physical barriers, etc. We aimed to determine the effects of varying sound frequencies above and below ultrasonic level (10.8 kHz, 20.0 kHz and 24.5 kHz), on Culex pipiens larvae with three replicates. In total, 720 mosquito larvae located in modified container with produced three different level sound frequencies piezo transducers were used in our experiment lasting eight hours. Also, the same number of larvae were used as control groups. Second instar larvae were detected more sensitive to used frequencies level. Also, in terms of larval mortality, the most effective sound frequency was 10.8 kHz in which 129 larvae died. It was concluded that the mortal effect was not related to the change in the frequency of sound; and this effect was related to acoustic resonance of the larvae used in the study.
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