Baseline histopathological survey of a recently invading island population of 'killer shrimp', Dikerogammarus villosus.

摘要: Dikerogammarus villosus, an invasive amphipod, has recently been detected in UK freshwaters. To assess the potential for pathogen introduction with invader, a year-long histopathology survey of D. villosus population inhabiting initial site detection (Grafham Water, Cambridgeshire, UK) was conducted. Additional samples were collected from 2 other subsequently identified populations within (Cardiff Bay and Norfolk Broads), established France (River Rhine) Poland Vistula). The data revealed range pathogens commensals. Several occurring continental not present populations. Microsporidian parasites novel viral amongst those observed UK. absence these at sites may therefore impart significant survival advantages to over native fauna, thereby increasing its success as invader. contrast profile between continental-invasive provides preliminary evidence so-called ‘enemy release’ is suggestive single-point introductions, rather than continual incursion events previously throughout range. This baseline important on commensal high-impact, species early invasion history It can be utilised temporal acquisition by non-native aquatic investigate competitive placed upon this invader due experienced