Earticle

초록

영어

To effectively evaluate invasive status through population surveys, determining where we could find geckos in field sites and what characteristics is in the habitat use of them could be critical. In southern parts of Korea, Gekko japonicus has known for more than 100 years (Stejneger, 1907), but the species status and natural history of the species including microhabitat use remain to be verified. In this study, we investigated microhabitat use of G. japonicus in 7 field populations (3 in Korea and 4 in Japan). Geckos were most frequently found on vertical plain walls, which made by concrete or bricks and of which color was gray. Most frequently used refuge type was crevice and light source was white street lamps. The time after sunset was negatively correlated with the substrate temperature where geckos were found and the distance to the nearest potential refuges. At around 25oC substrate temperature, the distance to refuges and the height from the ground were most varied, implying exploring wide-range of habitats at the temperature. When comparing the microhabitat use between spring and summer period, the distance from refuges and the height from the ground were commonly greater in summer than those in spring. Depending on population, the distance to light sources was shortened or extended. Adult geckos were found nearer to refuges and higher from the ground than juveniles, but microhabitat use between males and females were not different in any measured parameters. Our results suggest that G. japonicus might select specific microhabitats in terms of escaping potential predators and foraging preys using artificial light sources. Considering their activity period to over 6 hours of sunset, G. japonicus should use both sunlight during daytime and at least partially artificial lights to warm up their body temperatures.

키워드

저자

• Dae-In Kim [ Division of Basic Ecology, National Institute of Ecology, Seochen 33657, Republic of Korea ]
• Il-Kook Park [ Department of Biology, Kangwon National University, Chuncheon 24341, Republic of Korea ]
• Jong-Sun Kim [ Department of Biology, Kangwon National University, Chuncheon 24341, Republic of Korea ]
• Woo-Jin Choi [ Department of Biology, Kangwon National University, Chuncheon 24341, Republic of Korea ]
• Hidetoshi Ota [ University of Hyogo and Museum of Nature and Human Activities, Hyogo, 669-1546 Japan ]
• Daesik Park [ Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea. ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  강원대학교 산림과학연구소 학술대회

• 간기

  부정기

• 수록기간

  2017~2024

• 십진분류

  KDC 526 DDC 634