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Gammarus

Gammarus
Gammarus roeselii.jpg
Gammarus roeseli
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Amphipoda
Suborder: Senticaudata
Family: Gammaridae
Genus: Gammarus
Fabricius, 1775
Type species
Gammarus pulex
Linnaeus, 1758 
Synonyms
  • Rivulogammarus
  • Sinogammarus

Gammarus is an amphipod crustacean genus in the family Gammaridae. It contains more than 200 described species, making it one of the most speciose genera of crustaceans. Different species have different optimal conditions, particularly in terms of salinity, and different tolerances; Gammarus pulex, for instance, is a purely freshwater species, while Gammarus locusta is estuarine, only living where the salinity is greater than 25.

Species of Gammarus are the typical "scuds" of North America and range widely throughout the Holarctic. A considerable number are also found southwards into the Northern Hemisphere tropics, particularly in Southeast Asia.

The following species are included:


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