The Pacific amphipod Monocorophium uenoi (Stephensen, 1932) introduced to The Netherlands (NE Atlantic)

Examination of mud from crevices beneath Pacific oysters Crassostrea gigas (Thunberg, 1793) in The Netherlands revealed the presence of the Pacific amphipod Monocorophium uenoi (Stephensen, 1932), which was not recorded previously from the Atlantic. The most likely