초록

용어보기논문에서 용어와 풀이말을 자동 추출한 결과로, 시범 서비스 중입니다. AI-Helper

Abstract ▼ AI-Helper

The Arctic Warbler (Phylloscopus borealis) is a small arboreal bird widely distributed in the northern hemisphere. To collect information on its external measurements for sex determination, a total of 53 Arctic Warblers, which are common migrants in Korea, were captured by mist nets during their s...

The Arctic Warbler (Phylloscopus borealis) is a small arboreal bird widely distributed in the northern hemisphere. To collect information on its external measurements for sex determination, a total of 53 Arctic Warblers, which are common migrants in Korea, were captured by mist nets during their southward migration in 2008-2009. We measured 9 body parts of the captured warblers and identified their sexes later through genetic methods. Sexual size dimorphism was observed in most of the measured parts, but the maximum wing length was identified as the best measurement for sexing. Based on the identified discriminant function, the cut-off point for sex determination in Arctic Warblers was 63.8mm; a bird with wings longer than this cut-off point was classified as a male, otherwise it may be female. This discriminant function correctly classified 77.3% of individuals. As Phylloscopus warblers are sympatric birds exploiting microhabitats in forests through subtle morphological differences, the sexual dimorphism of Arctic Warblers identified in this study may be related to intraspecific sexual differences in their ecological and behavioral characteristics. Therefore, we suggest that the sex discriminant function and posterior probability of being a specific sex as estimated from our results are applicable to the improvement of diverse field studies related to Arctic Warblers in Korea.

주제어