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Article: Study results from University of Missouri in the area of experimental biology published.
- Article from:
- Science Letter
- Article date:
- March 24, 2009
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According to recent research from the United States, "Acoustic pattern recognition is important for bringing together males and females in many insect species. We used phonotaxis experiments on a walking compensator to study call recognition in the katydid Neoconocephalus affinis, a species with a double-pulsed call and an atypically slow pulse rate for the genus."
"Call recognition in this species is unusual because females require the presence of two alternating pulse amplitudes in the signal. A Fourier analysis of the stimulus-envelopes revealed that females respond only when both the first and second harmonics of the AM spectrum are of similar amplitude. The ...