Invasion

Invasion Description

1st Record? Valdez/AK/Prince William Sound (1972, Hines et al. 2000)

We have regarded populations of H. filiformis in Prince William Sound as introduced, probably by shipping traffic. They were found near Valdez in 1971-1972. However, occurrences in deeper Bering Sea waters and Kodiak Island may represent a native sibling species of this worm.

Geographic Extent

AK/Bering Sea (55 30 N; 166 40 W, 135 m depth) (USNMNH collections; Valdez/AK/Prince William Sound (1972, Hines et al. 2000); Kodiak Island/AK/Alitak Bay (1941, USNM 23090, US National Museum of Natural History 2007); Pribilof Islands, St. George Basin/AK/Bering Sea (1976, USNM 63505, US National Museum of Natural History 2007)