earticle

영어

To understand the age structure of a wrinkled frog (Rana rugosa) population located at Yangpyeong-gun, Gyeonggi-do South Korea and individual physical characteristics, we measured the snout-vent length (SVL) and body weight of 28 male and 69 female adults and 64 subadult frogs, determined their ages, and obtained the growth curve of the frogs. The present or absence of secondary sexual characteristics such as nuptial pads, vocal sacs, and ovulation eggs were used to determine the sex and maturity of the frogs. The mean SVL was 41.34±}7.38 mm in males and 50.69±}4.89 mm in females. Male ages ranged from 3 to 5 years (mean=4.29±}1.05, n=28) and female ages from 3 to 8 years (mean=4.51±}1.30, n=69). The difference between the sexes in age structure was not significant. We estimated the growth curve for wrinkled frogs using von Bertalanffy growth model. The growth coefficient (K) was 1.89 in males and 1.26 in females. The asymptotic size was 40.97 mm in males and 51.11 mm in females.