A Report on the Largest Population of a Critically Endangered Treefrog, Dryophytes suweonensis, in Republic of Korea

Kyo Soung Koo, Min Seock Do, Nakyung Yoo, Hacheol Sung


On 26 June 2019, a large number of Suweon treefrogs, Dryophytes suweonensis, was found in a rice paddy located in Gimpo-si, South Korea. A total of 31 adults of D. suweonensis were found, breeding in a single rice paddy. No other Suweon treefrog was found within a radius of approximately 1 km from the rice paddy. The number of Suweon treefrogs recorded was much higher than in any other rice paddy. However, the reason for the large number of Suweon treefrogs gathering in only one rice paddy is unclear. Further studies on the areas where Suweon treefrogs have been found, and protection of the areas and the endangered species is recommended.


Hylidae; Suwon treefrog; endangered species; breeding

Full Text:



Borzée A. and Jang Y. (2015), «Description of a seminatural habitat of the endangered Suweon treefrog, Hyla suweonensis», Animal Cells Syst., 19(3), 216 – 220.

Borzée A. and Jang Y. (2019), «Policy recommendation for the conservation of the Suweon treefrog (Dryophytes suweonensis) in the Republic of Korea», Front Environ. Sci., 7, 39.

Borzée A., Choi Y., Kim Y. E., Jablonski P., and Jang Y. (2019), «Interspecific variation in seasonal migration and brumation behaviour in two closely related species of treefrogs», Front Ecol. Evol., 7, 55.

Borzée A., Yu S. H., and Jang Y. (2016), «Dryophytes suweonensis (Suweon treefrog)», Herpetol. Rev., 47(3), 418.

Chun S., Chung E., Voloshina I., Chong J. R., Lee H., and Min M. S. (2012), «Genetic diversity of Korean tree frog (Hyla suweonensis and Hyla japonica): assessed by mitochondrial cytochrome b gene and cytochrome oxidase subunit I gene», Korean J. Herpetol., 4(1), 31 – 41.

Do M. S., Lee J. W., Jang H. J., Kim D. I., Park J., and Yoo J. C. (2017), «Spatial distribution pattern and prediction of hotspot area for endangered herpetofauna species in Korea», Korean J. Environ. Ecol., 31(4), 381 – 396.

Groffen J., Borzée A., and Jang Y. (2018), «Preference for natural borders in rice paddies by two treefrog species», Animal Cells Syst., 22(3), 205 – 211.

Kim I. H., Son S. H., Kang S. W., and Kim J. B. (2012), «Distribution and habitat characteristics of the endangered Suweon-tree frog (Hyla suweonensis)», Korean J. Herpetol., 4(1), 15 – 22.

Kuramoto M. (1980), «Mating calls of treefrogs (genus Hyla) in the far east, with description of a new species from Korea», Copeia, 1980, 100 – 108.

Lee J. E., Yang D. E., Kim Y. R., Lee H., Lee H. I., Yang S. Y., and Lee H. Y. (1999), «Genetic relationships of Korean treefrogs (Amphibia; Hylidae) based on mitochondrial cytochrome b and 12S rRNA genes», Korean J. Biol. Sci., 3(3), 295 – 301.

Lee Y., Park D., and Ha M. (1994), «Prehistoric rice cultivation in Korea — with emphasis on Kawaji site loc. Koyang city», Seong-Gog Nonchong, 25, 927 – 980 [in Korean].

Li J. T., Wang J. S., Nian H. H., Litvinchuk S. N., Wang J., Li Y., Rao D., and Klaus S. (2015), «Amphibians crossing the bering land bridge: evidence from holarctic treefrogs (Hyla, Hylidae, Anura)», Mol. Phylogen. Evol., 87, 80 – 90.

NIBR (2011), Red Data Book of Endangered Amphibians and Reptiles in Korea, Incheon, South Korea.

Park S. Y. (2011), Reproductive Isolation Based on Call Characters in Two Tree Frog Species in Korea. Master’s Thesis, Ewha Womans University, Seoul, South Korea.

Roh G., Borzée A., and Jang Y. (2014), «Spatiotemporal distributions and habitat characteristics of the endangered treefrog, Hyla suweonensis, in relation to sympatric H. japonica», Ecol. Inform., 24, 78 – 84.

Song W. (2015), «Habitat analysis of Hyla suweonensis in the breeding season using species distribution modeling», Korea Soc. Environ. Res. Tech., 18(1), 71 – 82.

DOI: https://doi.org/10.30906/1026-2296-2022-29-3-187-190


  • There are currently no refbacks.

You can subscribe to the print or electronic version of the journal on the site of EastView Company. If you have any questions, please write to the email sales@ivis.ru