›› 1997, Vol. 40 ›› Issue (4): 349-357.

• RESEARCH PAPERS • Previous Articles     Next Articles

A COMPARATIVE STUDY OF CALLING SONGS IN KAEMPFER CICADA AT DIFFERENT REGIONS

LEI Zhongren Jiang Jinchang Li Ii Chou Io   

  • Online:1997-11-20 Published:1997-11-20

Abstract: In this paper, the calling songs of kaempfer cicada Platypleura kaempferi(Fabricius) distributing in the western suburbs of Beijing (BX), Xian (Shaanxi)(SX), Mt. Emei (Sichuan) (SE), Weifang (Shandong) (SW), Fuzhou (Fujian)(FF) and Yangling (Shaanxi) (SY) are analyzed. The natural calling songs from thesed ifferent regions all have a high tide sound "Zhi… ', a characteristics of single amplitude modulation of pluses, and the principal frequencies of high tide sound (6 433=375Hz) are the same on the whole. These indicate the specificity of the species. But the fundamental frequencies of high tide sound and the quality factors (Q3dB) of principalfriquencies show some differences between populations from different regions. The fundamental frequencies of SW and FF are 450 Hz and 650 Hz respectively and the quality factors of principal frequency are lower, showing some regional differences. Especially the fundamental frequency of SY is raised to 800 Hz, namely, the differences between regions are more obvious.

Key words: Platypleura kaernpferi, variations of songs, geographic differences