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

Post-release Monitoring after Reintroduction of Captive-reared Korean Endangered Frog, Pelophylax Chosenicus

Proceedings of the National Institute of Ecology of the Republic of Korea, (P)2765-2203; (E)2765-2211
2021, v.2 no.2, pp.114-119
https://doi.org/10.22920/PNIE.2021.2.2.114
Chang-Deuk Park (Research Center for Endangered Species, National Institute of Ecology (NIE))
Kwanik Kwon (Research Center for Endangered Species, National Institute of Ecology (NIE))
Nakyung Yoo (Research Center for Endangered Species, National Institute of Ecology (NIE))
Jung-Hyun Lee (Research Center for Endangered Species, National Institute of Ecology (NIE))
Dong-Won Kang (Research Center for Endangered Species, National Institute of Ecology (NIE))
Jong-Sung Park (Research Center for Endangered Species, National Institute of Ecology (NIE))
Jeongwoo Yoo (Research Center for Endangered Species, National Institute of Ecology (NIE))
Keun-Sik Kim (Research Center for Endangered Species, National Institute of Ecology (NIE))
Ju-Duk Yoon (Research Center for Endangered Species, National Institute of Ecology (NIE))

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Abstract

To restore the Gold-spotted pond frog (Pelophylax chosenicus), a Korean endangered frog, 600 captive-reared individuals were reintroduced between August and September 2019 into an aquatic garden in the National Institute of Ecology where P. chosenicus had previously inhabited. After reintroduction, six post-release monitoring sessions were conducted from August 2019 to May 2020. Monitoring was performed using three methods (counting calls, observation, and capture) from sunset to midnight near release sites, eliminating potential threat factors. Snout-vent lengths and body weights of recaptured individuals were measured before they were released immediately. We noted that both snout-vent lengths and body weights of recaptured individuals were slightly higher than those before. The average recapture rate was 4.66%. Reintroduced frogs were recaptured at the last monitoring session conducted in May 2020, indicating that these reintroduced frogs hibernated during the winter successfully. We found that these reintroduced frogs successfully settled after release. This result will be useful for establishing management strategies for endangered frogs in Korea. Particularly, post-release monitoring could be an essential approach in the restoration program of a target species.

Submission Date
2020-09-10
Revised Date
2021-04-07
Accepted Date
2021-04-08

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