Population structure of the newly invader crab Hemigrapsus takanoi from the south-western Baltic Sea and their prey size selection

We assessed temporal variability in relative abundance, size-class, bimoass, and sex ratio, as well as breeding season of the Asian shore crab Hemigrapsus takanoi in the Kiel Fjord (Western Baltic Sea) during 2017. In addition, their prey size preference and consumption rates on mussels (Mytilus edulis) were experimentally assessed in spring, summer and autumn.