1. Department of Evolutionary Studies of Biosystems; SOKENDAI (The Graduate University for Advanced Studies); Hayama Kanagawa 240-0193 Japan
2. Department of Chemistry, Biology and Marine Science; Faculty of Science; University of the Ryukyus; Nishihara Okinawa 903-0213 Japan
3. Faculty of Science; Nara Women's University; Kitauoya-nishi Nara 630-8506 Japan
4. Department of Information Systems Creation; Faculty of Engineering; Kanagawa University; Yokohama Kanagawa 221-8686 Japan