This volume contains the Proceedings of The Crustacean Society Summer Meeting held between 20 and 24 September 2009 in Tokyo, Japan. It is the world's premier event on crustacean biology and organized under the auspices of the Carcinological Society of Japan and The Crustacean Society. It reports presentations of plenary keynote addresses, special symposia, and contributed papers given at the meeting, all of which have been peer reviewed and edited. The book represents some of the best research from leading international researchers from all over the world and presents major reviews of all areas of crustacean research, including systematics, evolution, ecology, behaviour, development, physiology, symbiosis, genetics, biogeography, palaeobiology, fisheries, and aquaculture.