Abstract:
The audio spectra of three different species of female mosquitoes in flight were taped
and analyzed. This work has established the modulating frequency (intelligence) to be at 97.7 Hz for
all the species of mosquitoes studied, namely; Culex pippen, Anopheles gambiae and Aedes egypti.
The signal carrier frequency is 488.3 Hz for all the species, except for the medically important
Anopheles gambiae which is at 293 Hz. Bessel functions were used to determine the number of audio
side bands or the bandwidth (BW). The bandwidth for the medically important Anopheles gambiae
was found to be 781.6 Hz. The first order sidebands (±f1) that is, (±97.7) were found to be the
resonant frequencies occurring at 195.4 Hz and 390.6 Hz respectively, with an amplitude of 9.57 mV.
Other species, i.e. Aedes egypti and a 'swarm' had a bandwidth of 1.36 kHz with resonant frequencies
occurring at the second order sidebands (±f2) or, 395 Hz and 786 Hz with an amplitude of 10.22 mV.
The limits of the operational band created by the resonant frequencies enable the males to identify
females of their kind.
