ESJ58 一般講演（口頭発表） B2-08

Distribution and Habitat Prefrence of Frogs in Kakuma Area, Kanazawa

Karlina Indraswari（Kanazawa Univ.）*, Nakamura Koji （Kanazawa Univ.）, and Yoneshima Ryo （Kanazawa Univ）

A study to determine the preference of Rhacophorus arboreus towards ponds, managed paddy fields, and manmade structures, was conducted in biotope areas of Kakuma area in Kanazawa, Japan. We measured the population dynamics and habitat utilization of this frog in three sites, the first site (Minamidan Valley) was an unmanaged pond area with no concrete structures, the second site (Kitadan Valley) was with unmanaged ponds and managed paddy fields, but no concrete structures and the third site (Zontan) consisted of both paddy fields and ponds, with concrete structures. As an explosive breeder, we found that Rhacophorus arboreus was most active in all three areas during May, when adult males start to emerge, until Late August, when metamorphed juveniles mostly dominated the population. Though in all three areas, Rhacophorus arboreus are often found on leaves or trees, in Zontan this frog was utilizing a manmade structure, mostly found sitting under a bridge. Through this study we discovered that Rhacophorus arboreus has a preference towards areas with cover inside unmanaged ponds.