Department of Biology, Chungbuk National University, Cheongju 361-763, Korea;
Institute of Biology and Soil Science, Russian Academy of Sciences, Vladivostok 690022, Russia;
Department of Biology, Chungbuk National University, Cheongju 361-763, Korea;
Department of Biology, Chungbuk National University, Cheongju 361-763, Korea;
Department of Biology, Chungbuk National University, Cheongju 361-763, Korea;
Department of Biology, Chungbuk National University, Cheongju 361-763, Korea;