Journal of Ecology and Environment

The Ecological Society of Korea (한국생태학회)
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Song Themes and Variation of Yellow-throated Bunting (Emberiza elegans)

노랑턱멧새(Emberiza elegans)의 테마송과 변이

  • Lee, Won-Ho (Department of Biology, Graduate School, Dong-A University) ;
  • Kwon, Ki-Chung (Department of Biology, Graduate School, Dong-A University)
  • 이원호 (동아대학교 대학원 생물학과) ;
  • 권기정 (동아대학교 대학원 생물학과)
  • Published : 2006.06.01
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Abstract

To study song themes and variation of Yellow-throated Bunting, we obtained and analyzed recordings from 45 males breeding in 16 deciduous forests of 6 provinces. We classified the 3,245 songs into a total of 164 song themes and 1,024 song variants according to the identification on the base of difference(lexicon) in 640 syllable compositions. Males had one to six song themes and averaged 3.5 themes. No males shared an identical song theme. Males had $5{\sim}14$ syllables (ave. 9.4) in one song theme and males increased effectively their repertoire size by changing syllable composition (i.e. adding, deleting, or substituting one or more syllables) in a single song theme. The number of variants averaged 5.1 (range 1 to 31) per song theme. Individual variability was highest in the terminal elements of the song. In PCA, the 16 populations are clearly separated on Co. I based on shared syllable and on Co. II based on unique syllable. Similarity of songs based on shared syllables by distance coefficients, showed a pattern of concordance with geography. Pairwise similarity declined with increasing distance among recording sites. 16 different geographical regions by the syllable were divided in UPGMA tree.

노랑턱멧새의 테마송과 변이를 연구하기 위해서, 6개 도에 산재한 16개 활엽수림지대에서 번식하는 45개체의 노랑턱멧새 수컷에서 3,245개의 노랫소리를 녹음하였다. 노랫소리를 구성하는 주된 요소이며 대용문자가 부여된 640개 음절의 조합을 분석하여 164 테마송, 1,024 변이로 분류하였다. 수컷 개체는 각각 $1{\sim}6$ 테마송을 가졌고, 평균 3.5개 레퍼토리를 가지고 있었다. 수컷 개체 사이에서 노랫소리를 구성하는 음절의 순서와 배열이 완전히 동일한 테마송은 하나도 없었다. 수컷 개체의 노랫소리를 구성하고 있는 음절의 수는 $5{\sim}14$개(평균 9.4개)였다. 수컷은 하나의 테마송에 변이를 만들기 위해서 음절을 첨가, 삭제, 대체하여 레퍼토리 크기를 효과적으로 증가시켰다. 하나의 테마송이 갖는 변이의 수는 평균 5.1($1{\sim}31$)개였고, 개체 변이성은 노랫소리의 말단부의 구성 요소에서 가장 높았다. PCA 분석에서 공유하는 음절에 기초를 둔 요인 I과 고유한 음절에 기초를 둔 요인 II에 의해서 노랑턱멧새 16 개체군은 서로 다른 군집을 형성하였다. 공유한 음절의 수에 기초를 둔 유사성 측정은 지역과 일치하는 강한 형태를 나타냈다. 양방향 유사도를 분석한 결과 16 개체군은 UPGMA 군집 속으로 나누어졌으며, 지리적인 거리가 증가함에 따라 유사도는 감소하는 경향을 보였다.

Keywords

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