Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
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Morphological Characteristics of Siberian Flying Squirrel (Pteromys volans): Sexual Dimorphism and Camparison of Morphological Characteristics in Different Latitudes

하늘다람쥐(Pteromys volans)의 형태적 특성: 성적이형성 및 위도에 따른 형태학적 특성 비교

  • Kim, Junsoo (Department of Forest Sciences, Seoul National University) ;
  • Jeon, Jonghoon (Department of Forest Sciences, Seoul National University) ;
  • Lee, Woo-Shin (Department of Forest Sciences, Seoul National University) ;
  • Kim, Jong-U (Department of Forest Sciences, Seoul National University)
  • 김준수 (서울대학교 산림과학부) ;
  • 전종훈 (서울대학교 산림과학부) ;
  • 이우신 (서울대학교 산림과학부) ;
  • 김종우 (서울대학교 산림과학부)
  • Received : 2018.10.24
  • Accepted : 2019.02.25
  • Published : 2019.03.31
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Abstract

This study was conducted to clarify the morphological characteristics of Siberian flying squirrel (Pteromys volans). We investigated 6 morphological characteristics from April, 2014 to March 2016 at Mt. Baekwoon, Wonju, Gangwon province. We found that Siberian flying squirrel showed female-biased sexual dimorphism. This result would be related to reproductive strategy of the species which female nurse offspring alone. As results of comparison of morphological characteristics from Korea, Finland and Japan, both body weight and head-body length appeared heavier and longer from high-latitude to low-latitude. This result suggest that morphological difference between different latitudes would be related with climate and habitat environment. The more researches would be needed with other morphological characteristics of Siberian flying squirrel.

하늘다람쥐의 형태적 특성을 파악하기 위해 강원도 원주시 백운산에서 2014년 4월부터 2016년 3월까지 하늘다람쥐의 6가지 외부형태적 특성에 대한 측정을 실시하고 분석하였다. 그 결과 하늘다람쥐는 암컷이 수컷보다 큰 암컷편향적 성적이형성을 나타내는 것으로 확인되었다. 이는 단독 생활을 하고 암컷 혼자 새끼를 키우는 하늘다람쥐의 번식전략과 관련이 있는 것으로 보인다. 국내와 핀란드, 일본에서 파악된 하늘다람쥐의 외부형태 측정치 중 체중과 머리-몸통의 길이를 비교한 결과, 모두 핀란드와 일본 그리고 한국 순서대로 위도가 높은 지역이 크게 나타났다. 이러한 형태적 특성의 차이는 분포 지역 위도에 따른 기후와 서식환경 차이에 따른 것으로 생각되며, 추후 체중과 머리-몸통의 길이 이외의 외부형태 측정치에 대한 비교 연구가 필요할 것으로 생각된다.

Keywords

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Figure 1. Measurements of small mammal.

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Figure. 2. Differences in mean body mass and head-body length of Siberian flying squirrel between Korea (n=51), Hokkaido (n=22, Ohdachi et al. 2015) and Finland (n=72, Selonen et al. 2016).

Table 1. Description of morphometric variables and sexual dimorphism index of Siberian flying squirrel between males and females.

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