Crassicorophium bonellii (H. Milne Edwards, 1830)

Kakkonen, Jenni E., Worsfold, Tim M., Ashelby, Christopher W., Taylor, Andrea & Beaton, Katy, 2019, The value of regular monitoring and diverse sampling techniques to assess aquatic non-native species: a case study from Orkney, Management of Biological Invasions 10 (1), pp. 46-79 : 59

(21) Crassicorophium bonellii (H. Milne Edwards, 1830)

Status in U.K. – cryptogenic.

Crassicorophium bonellii has a widely reported distribution but the identity of the species is problematic and it is possible that a species complex is involved ( Marchini and Cardeccia 2017). Chapman (2007) considered that C. bonellii was indistinguishable from Monocorophium acherusicum . In the current sampling programme C. bonellii has been found at Vanguard in 2013 and from a scrape sample at Gutter Sound in 2016 but it has also been recorded in MNCR surveys in 1995 and 1997 ( Murray et al. 1999).

Its widespread nature and association with human vectors makes establishing the native range of the species problematic ( Marchini and Cardeccia 2017) and we consider it to be a cryptogenic species in the U.K.