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Gammarus daiberi
Image courtesy of Tricia Bippus, California Department of Fish and Wildlife, IEP Diet and Condition Study. 
Gammarus daiberi
Taxonomic Group: Crustaceans-Amphipods


Gammarus daiberi is a brackish water and estuarine amphipod which is native to the Eastern United States. Introduced populations are known from California where it is found in low-salinity areas of San Francisco Bay. This species has been collected in ballast water aboard oil tankers arriving into Alaska and this vector may aid its spread further along the West Coast of North America. No ecological or economic impacts have been reported for this species.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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