Lyapkov Sergey M. RussiaMoscowLomonosov Moscow State University, 1 Vorobyovi Gory, Moscow 119992, Russialyapkov@mail.ru Author's articles Geographical variation of duration of larval development and body size in Rana temporaria (Ranidae, Anura) metamorphs Variation of age composition and postmetamorphic growth rates in Pelophylax ridibundus (Ranidae, Anura): Comparison populations from Moscow region and Kamchatka