“…In the river Medway, P. leniusculus was thought to inhabit the upper catchment but the crayfish status downstream was unknown, while in the river Itchen A. pallipes was assumed to be present throughout most of the upper catchment and P. leniusculus had been recorded in few sites both upstream and downstream of A. pallipes presence (Rushbrook 2014); Table 1). The infection status of both the Medway and Itchen crayfish populations was unknown.…”