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  • P-ISSN2765-2203
  • E-ISSN2765-2211

Skeletal Differences in Lower Body and Limbs in Relation to Ecological Traits in Anurans in South Korea

Proceedings of the National Institute of Ecology of the Republic of Korea, (P)2765-2203; (E)2765-2211
2022, v.3 no.1, pp.32-40
https://doi.org/10.22920/PNIE.2022.3.1.32
Jun-Kyu Park (Department of Biological Sciences, Kongju National University)
Tae Gyu Kang (Department of Biological Sciences, Kongju National University)
Ji-Eun Lee (Department of Biological Sciences, Kongju National University)
Ji-Eun Kim (Department of Biological Sciences, Kongju National University)
Younghyun Kim (Department of Biological Sciences, Kongju National University)
Yuno Do (Department of Biological Sciences, Kongju National University)
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Abstract

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 japonicas, Glandirana rugose, 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. japonicas. 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.

keywords
Ecological traits Landmark-based geometric morphometrics Locomotor performance Ratio of limbs Skeletal shape
Submission Date
2021-10-20
Revised Date
2021-12-07
Accepted Date
2021-12-08

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