The Korean Journal of Ecology

The Ecological Society of Korea (한국생태학회)
권호 표지

A Song Transition among the Geographic Populations of Bush Warbler (Cettia diphone)

휘파람새(Cettia Diphone)개체군간 song 변이의 방향

  • Park, Dae Sik (Department of Biology Education, Korea National University of Education, Cheongwon, Chungbuk, 363-791, Korea) ;
  • Sooil Kim (Department of Biology Education, Korea National University of Education, Cheongwon, Chungbuk, 363-791, Korea) ;
  • Shi-Ryong Park (Department of Biology Education, Korea National University of Education, Cheongwon, Chungbuk, 363-791, Korea)
  • Published : 1996.04.01
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Abstract

This study was to examine the occurrence of geographic song variation and its pattern of transitional direction among bush warbler populations distributed in Korea and Japan, Bush warbler songs (n=283) of 25 males from Cheongwon and Jeju, Korea, and from Chiba, Japan were analyzed. Chiba individuals had more song types and had the higher dominant frequency and longer duration of the introductory whistle portion than Cheongwon and Jeju individuals. In measure of eight song parameters, the parameters constantly showed a decreasing or increasing tendency. The constant tendency showed direction related with the geographic location from Chiba to Cheongwon. The difference in song parameters between Cheongwon and Chiba populations was the greatest in comparison to that of other sets of geographic populations. The degree of discrimination among the three populations was 92.00%. These results indicate that there is a geographic song variation between bush warblers of Japan and Korea, and that the song transition has been directed from Chiba (Japan) through Jeju to Cheongwon (Korea).

Keywords

References

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