Proceedings of the National Institute of Ecology of the Republic of Korea

국립생태원 (National Institute of Ecology)
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Skeletal Differences in Lower Body and Limbs in Relation to Ecological Traits in Anurans in South Korea

  • Park, Jun-Kyu (Department of Biological Sciences, Kongju National University) ;
  • Kang, Tae Gyu (Department of Biological Sciences, Kongju National University) ;
  • Lee, Ji-Eun (Department of Biological Sciences, Kongju National University) ;
  • Kim, Ji-Eun (Department of Biological Sciences, Kongju National University) ;
  • Kim, Younghyun (Department of Biological Sciences, Kongju National University) ;
  • Do, Yuno (Department of Biological Sciences, Kongju National University)
  • 투고 : 2021.10.20
  • 심사 : 2021.12.08
  • 발행 : 2022.02.01
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초록

The trade-off between morphology and physical function may vary according to ecological traits. Taking a quantitative approach, we attempted to analyze the differences in the skeletal shape of the lower body and limbs in relation to the ecological traits of four anuran species (Dryophytes japonicus, Glandirana rugosa, Pelophylax nigromaculatus, and Lithobates catesbeianus) occurring in South Korea. Body size, locomotor mode, microhabitat, trophic positions, and predator defense mechanisms were selected for the ecological traits of the anurans. The pelvis, ilium, and urostyle, which are associated with locomotor performance, were selected for the skeletal shape of the lower body. The ratio of limbs, which is related to locomotor mode and microhabitat, was confirmed by analyzing the skeletons of the forelimbs (radio-ulnar and humerus) and hindlimbs (femur and tibiofibular). Both landmark-based geometric morphometrics and traditional methods were used for skeletal shape comparison. The skeletal shape of the lower body was completely different among the four species, whereas the ratio of the limbs was only different in D. japonicus. The skeletal shape of the lower body may be related to body mass and predator defense mechanisms, whereas the ratio of the limbs was related to the locomotor mode and microhabitat. Quantifying these morphological differences among various species can help elucidate the mechanisms of behavioral and morphological changes in response to ecological effects.

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과제정보

This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2018R1C1B3008645).

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