Teredo navalis

Johnson and Rowell (1988) found that some protection against marine borers was obtained by acetylating wood, but this was lower than that obtained with CCA or creosote treatment. Larsson Brelid etal. (2000) also found that acetylation provided only slight protection against attack in a marine environment. However, Westin etal. (2004b) exposed five acetylated pine samples (21 % WPG) at a marine test site, and found that four of these were free from attack after 4 years exposure. Untreated pine sapwood samples had failed after 1 year due to heavy attack by Teredo navalis. 

Among bivalve mollusks, shipworms Teredo navalis, were the first encountered they invaded from the Black Sea in 1953-1955 during the increase in the salinity of the Sea of Azov. Under low salinity values, their abundance is low, but when the salinity grows, in the warm seasons, outbursts of the mass development of shipworms are possible sometimes, they result in a rapid damage or even destruction of wooden constructions. Among other bivalve mollusk species, in 1966-1967, the brackish-water species Mya arenaria was encountered it distributed over almost the entire Sea of Azov. At present, this... 

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