The influence of land use on the morphological properties of Japanese tree frog (Hyla japonica) in paddy, South Korea

초록

The change of land use around habitat due to urbanization is causing a decrease in worldwide populations of amphibians. We compared head width (HW), snout-vent length (SVL), and body weight (BM) between two populations of Japanese tree frog (Hyla japonica) during the breeding period in May and June, 2018 to determine population differences depending on the gender and the land use. 2018. The health index of H. japonica calculated as a ratio of BM and SVL. The female populations showed significantly higher values in morphology and health index than males. When compared by period, the SVL in May was significantly higher than June. However, the BM and CF of the population in June showed significantly higher than in May. The SVL of H. japonica population in rural area showed significantly higher than in urban area. The reduction and fragmentation of habitat, and changes in food sources due to change of land use have particularly affected outside character and condition factor of male population. This research was supported by a grant (12-TI-C02) from Advanced Water Management Research Program funded by Ministry of Land, Infrastructure and Transport of Korean government. Keyword : Condition factor, Hyla japonica, urbanization, morphology, population