Investigating the Effect of Acoustic Waves or Low Power Microwave Radiation on Selected Bacteria/Infected Worms

Abstract

Conclusion: Above results illustrate that not all sonic stimulations are capable of exerting effect on selected microorganisms/microbe infected worms. Sound do not exert any effect on Caenorhabditis elegans but it solely exert effect on bacteria. When test frequency containing bird voice of Spotted Babbler (2260 – 2712 Hz) was used to check its effect on growth of Prevotella melaninogenica and on C. elegans infected with different pathogenic microbes no effect was observed. So, only a particular test frequency (with a particular intensity) can show some effect on a particular microorganism. As when C. elegans infected with S. marcescens were subjected to sonic stimulation (700 Hz and 2000 Hz; 85.5 dB), it registered 27% and 11% higher survival respectively, as compared to the infected C. elegans receiving no sound treatment, considering the number of surviving worms on last day of the experiment (Figure 10, 12). Such notable survival benefit was not observed with other test frequencies (300 Hz, 500 Hz, 600 Hz and 1000 Hz). When different bacterial cultures were exposed to microwave radiations for 2 and 4 minutes no effect on virulence of these pathogenic bacteria towards Caenorhabditis elegans host was observed.