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This study was carried out to investigate the bat (Chiroptera) fauna in Jeju Island. Bat distribution was monitored in lava tubes, sea caves, cave encampments and eco-corridors from July, 2006 to June, 2015. Bat specimens were also confirmed at the museums in Jeju Island. From the present study, we found 8 species of 6 genera belong to 3 families, which was different from the records had previously described in Jeju Island since 1928. Five species (Rhinolophus ferrumequium, Myotis bombinus, M. formosus, M. macrodactylus and Miniopterus schreibersi) were commonly found to live in lava tubes and cave enforcements. But only R. ferrumequium was found in a sea cave and five species including Murina leucogaster and Pipistrellus abramus were found in eco-corridors. We have also found seven species including Tadarida insignis in the specimens stored in local museums. From the results of this study, we actually could not found the remaining seven species (Hypsugo savii, Miniopterus fuscus, Myotis mystacinus, Myotis ikonnikovi, Myotis branditii, Myotis petax and Pipistrellus endoi). Interestingly, Myotis formosus which is known as one of endangered species and Myotis bombinus which is very rare in Korean Peninsula were currently found in Jeju Island. In addition, Tube-nosed bat (Murina leucogaster) that was discovered for the first time through this study. A variety of habitats for Chiroptera were identified, but the information is still not sufficient to understand. These results will be useful to provide a fundamental data in preserving the diversity of bats and in ecological study in Jeju Island.
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