Clam farming quality as a management tool: A proposal based on recent studies in Northern Adriatic lagoons
Received: 06 October 2003 Accepted: 28 January 2004 DOI:
Cite this article as: Pellizzato, M. & Da Ros, L. Aquacult Int (2005) 13: 57. doi:10.1007/s10499-004-9030-6 Abstract
The rapid and extensive spread of the clam
Tapes philippinarum in Northern Adriatic lagoons, mostly in the lagoon of Venice (550 kmq), has led to severe exploitation by mainly free fishing, thus breaching the law. To contrast this unsustainable overexploitation, to which the present decreasing clam harvests are at least partly due, the local fishing authority has recently prepared a Master Fishing Plan for clam production, which is at present under way: the free fishing system must be replaced by a licencing system aimed at regulating market supply and mainly at converting more than 1000 fishermen into clam farmers. Moreover, a number of regulations for both vessels and harvesting techniques and management rules, such as daily clam harvests and fishing times, have been established. Although these newly introduced regulations may be regarded as valuable tools for preserving both the lagoon environment and the resource itself, they do not adequately consider protection for consumers. Although the licensed water areas have been evaluated as safe according to Italian law, at present no guarantees certify the quality of the clams harvested from them, due to the fact that the lagoon of Venice has polluted areas from which clams may be collected illegally and recycled to the legal market simply by putting them into the approved licensed areas before harvesting and marketing them. This paper therefore proposes a number of measures to be undertaken within the framework of good farming practices. The aim is to improve product quality by certification procedures in all production phases, and to guarantee the definite origin of farmed clams. Keywords Lagoon of Venice Quality criteria Tapes philippinarum farming References Baldwin, I.G., Kramer, K.J.M. 1994 Biological early warning systems (BEWS) Kramer, K.J.M. eds. Biomonitoring of Coastal Waters and Estuaries CRC Press Boca Raton 1 28 Google Scholar Bayne, B.L. 1980 Physiological measurements of stress Rapports et Proces-Verbaux des Reunions du Conseil International pour Exploration de la Mere 179 56 61 Google Scholar Boatto, V., Galletto, L., Orel, G., Pellizzato, M., Rossetto, L., Sfriso, A., Silvestri, S., Zentilin, A. 2002 Evaluation of alternative scenarios for alieutic resources management in the Lagoon of Venice Campostrini, P. eds. Scientific Research and Safeguarding of Venice Istituto Veneto Scienze Lettere Arti Venice 69 84 Google Scholar Casale, M., Giovanardi, O., Grimm, F., Orel, G., Pessa, G. 2001 Abundance and distribution of most important clams in the lagoon of Venice during summer 1999, with particular reference to Tapes philippinarum (Adams & Reeve, 1850) Biologia Marina Mediterranea 8 413 423 Google Scholar Chicharo, L., Gaspar, M.B., Vafidis, D., Marin, M.G., Da Ros, L., Pellizzato, M., Labarta, U., Reiriz, M.J., Chicharo, M.A. 2001 Impact of bivalve fisheries in the Ria Formosa Lagoon (Portugal), Venice Lagoon (Italy), and Aegean Sea (Greece): An integrated overview ICES CM 2001/J. 08 1 30 Google Scholar Da Ros, L., Marin, M.G., Nesto, N., Ford, S.E. 1998 Preliminary results of a field study on some stress-related parameters in Tapes philippinarum naturally infected by the protozoan Perkinsus sp Marine Environmental Research 46 249 252 Google Scholar Eertman, R.H.M., de Zwaan, A. 1994 Survival of the fittest: Resistance of mussels to aerial exposure Kramer, K.J.M. eds. Biomonitoring of Coastal Waters and Estuaries CRC Press Boca Raton 269 284 Google Scholar Fossato, V.U., Campesan, G., Craboledda, L., Dolci, F., Stocco, G. 2000 Persistent chemical pollutants in mussels and gobies from the Venice Lagoon Lasserre, P. Marzollo, A. eds. The Venice Lagoon Ecosystem, Man and the Biosphere Series, Vol. 25. Parthenon Publishing N.Y and UNESCO, Paris 421 437 Google Scholar
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