Comments: Not available.

Comments: Impacts on food availability for economically important juvenile fishes (Valentine et al., 2007).

References: AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-09-02. Herborg, L. M., O’Hara, P., & Therriault, T. W. (2009). Forecasting the potential distribution of the invasive tunicate Didemnum vexillum. Journal of Applied Ecology, 46(1), 64-72. Minchin, D. (2007). Rapid coastal survey for targeted alien species associated with floating pontoons in Ireland. Aquatic Invasions, 2(1), 63-70. Simpson, T. J., Dias, P. J., Snow, M., Muñoz, J., & Berry, T. (2017). Real‐time PCR detection of Didemnum perlucidum (Monniot, 1983) and Didemnum vexillum (Kott, 2002) in an applied routine marine biosecurity context. Molecular Ecology Resources, 17(3), 443-453. Valentine PC, Collie JS, Reid RN, Asch RG, Guida VG, Blackwood DS (2007) The occurrence of the colonial ascidian Didemnum sp. on Georges Bank gravel habitat - Ecological observations and potential effects on groundfish and scallop fisheries. Journal of Experimental Marine Biology and Ecology 342: 179-181, doi:10.1016/j.jembe.2006.10.038

Comments: Displacement of native species (Minchin et al., 2007).

References: AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-09-02. Herborg, L. M., O’Hara, P., & Therriault, T. W. (2009). Forecasting the potential distribution of the invasive tunicate Didemnum vexillum. Journal of Applied Ecology, 46(1), 64-72. Minchin, D. (2007). Rapid coastal survey for targeted alien species associated with floating pontoons in Ireland. Aquatic Invasions, 2(1), 63-70. Simpson, T. J., Dias, P. J., Snow, M., Muñoz, J., & Berry, T. (2017). Real‐time PCR detection of Didemnum perlucidum (Monniot, 1983) and Didemnum vexillum (Kott, 2002) in an applied routine marine biosecurity context. Molecular Ecology Resources, 17(3), 443-453. Valentine PC, Collie JS, Reid RN, Asch RG, Guida VG, Blackwood DS (2007) The occurrence of the colonial ascidian Didemnum sp. on Georges Bank gravel habitat - Ecological observations and potential effects on groundfish and scallop fisheries. Journal of Experimental Marine Biology and Ecology 342: 179-181, doi:10.1016/j.jembe.2006.10.038