38 JUNE 2013 • WORLD AQUACULTURE • WWW.WAS.ORG of the tank and white hyphae of fungi protruding through the exoskeleton particularly in the areas of articular membranes (Arrignon 1990, Polglase and Alderman 1984). This was the third experiment on freshwater crayfish culture and husbandry in Greece since the 1980s. Based on communication with fellow Greek researchers, it was the most successful, inasmuch as we have managed to keep crayfish for almost four months without severe mortalities and no weight loss. In addition, this experiment indicated the capacity of the freshwater crayfish A. astacus to survive and grow in recirculating systems and fed an artificial diet. The fatty acid profile of the administered diet and crayfish tissues are underway and will elucidate the optimum dietary requirements of the species. In addition, the determination of optimum conditions for successful reproduction in recirculating systems and its respective appropriate nutritional requirements for reproduction purposes will enable us to maintain and successfully propagate this species in captivity. Acknowledgments This research was funded by the University of Thessaly Research Committee (Code No 3747). The author thanks Dr. K. Perdikaris (Department of Aquaculture and Fisheries, Technological Educational Institute of Epirus, Greece) for his comments and info regarding crayfish in Greece. Thanks also to various members of the International Association of Astacology (IAA) for providing “old” crayfish references, not traceable through the internet or scientific databases. Notes Panagiotis A. Pantazis, Department of Ichthyology, Aquatic Fauna and Fish Diseases, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, 224 Trikalon Street, P.O.Box 199, Gr-43100, Karditsa, Greece Tel +30 24410 66020, Fax +30 24410 66045, e-mail: ppantazis@ vet.uth.gr References Abrahamsson, S. 1969. Historik, allman oversikt och reformforslag betraffande fangst och handel med flodkrafta. Fauna och Flora 64:98-104. Ackefors, H., R. Gydemo and L. Westin. 1989. Growth and survival of juvenile crayfish Astacus astacus in relation to food and density. Pages 365-373 In N. De Pauw, E. Jaspers, H. Ackefors and N. Wilkins, editors. Biotechnology in Progress. European Aquaculture Society, Bredene, Belgium. Ackefors, H. and O.V. Lindqvist. 1994. Cultivation of Freshwater Crayfishes in Europe. Pages 157-216 In J.V. Huner, editor. Freshwater Crayfish Aquaculture in North America, Europe and Australia. Food Products Press, Haworth Press, Inc, Binghamton, NY, USA. Arrignon J., editor. 1990. L’écrevisse et son élevage. GauthierVillars, Paris (Collection Nature et Agriculture), France. Haeckel, E. 1857. Über die Gewebe des Flusskrebses. Archiven für Anatomie und Physiologie der Wissenschaftlichen Medizine 1857:469-568. Huxley, T. H. 1880. The Crayfish. An Introduction to the Study of Zoology. D. Appleton and Co., London, Great Britain. Koutrakis, E., C. Perdikaris, Y. Machino, G. Savvidis and N. Margaris. 2007. Distribution, recent mortalities and conservation measures of crayfish in Hellenic fresh waters. Bulletin Francais De La Peche Et De La Pisciculture 385:25-44 Lagerqvist L.O. and E. Nathorst-Boos. 1980. En liten bok om kraftor. Liber, 86 pp. Stefanidis, P. 2001. Torrential environment of the catchment area of Lake Tavropos. Project LIFE 99NAT/GR/6480. Polglase, J. and D. Alderman. 1984. Crayfish plague threatens U.K. stock. Fish Farmer 7(3):16-17 Theocharis, V. 1986. La pêche a l’écrevisse dans la région d’ Hipiros en Grèce. Station de recherches de Louros, Ministère Grec de l’Agriculture, Ioannina. Bulletin publie par l’Association des Astaciculteurs de France, Bulletin No 8, France. Westman, K., M. Pursiainen and P. Westman. 1990. Status of crayfish stocks, fisheries, diseases and culture in Europe. Report of the FAO European Inland Fisheries Advisory Commission (EIFAC) working party on crayfish. RKTL, Kalatutkimuksia 3, 1990. Helsinki, Finland.
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