Round-trip Catadromous Migration in a Japanese Amphipod, Sternomoera rhyaca (Gammaridea: Eusiridae) Kuribayashi, Keiko and Katakura, Haruo and Kyono, Masaki and Dick, Matthew H. and Mawatari, Shunsuke F., Zoological Science, 23, 763-774 (2006), DOI:http://dx.doi.org/10.2108/zsj.23.763