Invasion
Invasion Description
1st Established record? Boston/MA/Boston Harbor (1893, Manley 1893. Two wooden scows sank in the harbor, and were found to have been bored by T. navalis) 1st record?: Essex County/MA/Massachusetts Bay 'Found in the sheathing of vessels from foreign seas' (Russell 1839); 'from ship timbers' (Boston, MA Gould 1870). Teredo navalis was absent in wood of a 5,000 yr-old fish weir in Boston, though Bankia gouldi was found (Johnson et al. 1942).
Geographic Extent
Essex County/MA/Massachusetts Bay (Russell 1839, from ships); Gloucester/MA/Massachusetts Bay (Wallour 1960); Beverly/MA/Massachusetts Bay (Wallour 1960); Salem/MA/Massachusetts Bay (1940, MCZ Malacology 357683, Museum of Comparative Zoology 2013); Wallour 1960); Lynn/MA/Massachusetts Bay (Wallour 1960); East Boston/MA/Massachusetts Bay (Wallour 1960); Hull/MA/Massachusetts Bay (Wallour 1960); Quincy/MA/Massachusetts Bay (Wallour 1960); Hingham/MA//Massachusetts Bay (Wallour 1960); Weymouth/MA//Massachusetts Bay (Wallour 1960); Brant Rock, Marshfield/MA/Green Harbor River, Massachusetts Bay (1935, MCZ Malacology 122057, Museum of Comparative Zoology 2013)
Vectors
| Level | Vector |
|---|---|
| Alternate | Hull Fouling |
| Alternate | Ballast Water |
Regional Impacts
| Economic Impact | Shipping/Boating | |
| Damage to boats and pilings in Boston Harbor was first reported in 1893 (Manley 1893). Routine shipworm surveys, sponsored by the Navy from the 1930s to 1959 show great year-to year variation in shipworm settlement and abundance in Boston Harbor (Brown 1953; Wallour 1960). | ||