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http://dx.doi.org/10.13047/KJEE.2022.36.6.582

Report on the Eradication of Nutria (Myocastor coypus Molina, 1782), an Invasive Alien Species, from Jeju-do, South Korea - Case of Songdang-ri, Jeju-si -  

Ga-Ram Kim (Faculty of science Education, Jeju National University)
Jun-Won Lee (Practical Translational Research Center, Jeju National University)
Seon-Mi Park (Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University)
Sung-Hwan Choi (Interdisciplinary Graduate Program in Advanced Convergence Technology)
Young-Hun Jung (and Science, Jeju National University)
Hong-Shik Oh (Faculty of science Education, Jeju National University)
Publication Information
Korean Journal of Environment and Ecology / v.36, no.6, 2022 , pp. 582-591 More about this Journal
Abstract
This study was conducted to eliminate Myocastor coypusMolina, 1782 (Nutria) from Jeju Special Self-Governing Province, South Korea. Habitat identification and eradication were carried out from September to November 2013, and a survey was carried out until June 2022 to check whether the eradication was successful. The habitat was identified with unmanned cameras, interviews, and literature surveys, and the capture was performed using the trapping method with food to attract nutria to the habitat area. The study area for the follow-up survey, which was set relatively wide considering nutria's home range, included wetlands and rivers within 4.0 km2 of the habitat area (eradication area). As a result, nutria's habitat was confirmed only at Songdang Ranch, Songdang-ri, of Jeju Island, with traces of habitat (footprints, excrement, and burrows) confirmed in waterways and ponds within the pasture. Eight individuals were captured, including four females, three males, and one individual in too advanced a state of decay to identify the sex. The follow-up survey thoroughly investigated the habitat and its surroundings, focusing on three areas with permanent water, Seongeup Reservoir, Cheonmi Creek, and Molsuni Pond, but no signs of habitat were identified. Therefore, it is determined that nutria inhabiting Jeju Island has been completely eradicated. It is believed that the successful eradication of nutria in the Jeju Special Autonomous Region was possible due to a synergy between 1) the eradication of nutria at the beginning of the settlement phase through rapid capture after confirming the nutria habitat and 2) the delayed expansion period because of rare presence of wetlands, where water is constantly stagnant, on Jeju Island. These results imply that quickly identifying the ecological characteristics of the species and preventing disturbances before they or at the beginning of the ecological disturbance through control and eradication at the initial stage of settlement before the expansion stage is an effective measure to cope with the influx of alien species.
Keywords
NUTRIA; ERADICATION; TRAPPING; HABITA; ECOLOGICAL DISTURBANCE;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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