Abstract
In the river installed the preventing sand erosion dam in the Miura peninsula, we tudied the habitats of wintering period and the amount of growth during the winter and spring of rvae of Wrinkled Frog (Rana rugosa). For the upstream of Morito (800m section), we carried out urvey of larval capture and survey of environmental conditions. The larvae during the winter was ardly observed growth from wet weight and head and body length, growth rate of hind legs, but hen the larvae during the spring was observed rapid growth. In the wintering period, larvae used an xtremely limited place, that was related to a sediment deposit surface and a gradual lotic nvironment formed on the upstream side of the preventing sand erosion dam.
