Results of species assessment according to Target Species selection criteria
Known human health impact? No
Comments: No (used as seafood) (Fuller et al., 2005).
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 2021-08-31.
Clarke, C. L., & Therriault, T. W. (2007). Biological synopsis of the invasive tunicate Styela clava (Herdman 1881). Fisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station.
Davis, M. H., & Davis, M. E. (2010). The impact of the ascidian Styela clava Herdman on shellfish farming in the Bassin de Thau, France. Journal of Applied Ichthyology, 26, 12-18. DOI: 10.1111/j.1439-0426.2010.01496.x
Fuller, P (2005) Styela clava. USGS-NAS (Nonindigenous Aquatic Species Database, Gainesville, FL.). http://nas.er.usgs.gov/queries/FactSheet.asp?SpeciesID=1292
Lützen J (1998) Styela clava Herdman (Urochordata, Ascidiacea), a successful immigrant to North West Europe: ecology, propagation and chronology of spread. Helgoländer Meeresuntersuchungen, Volume 52, Issue 3-4, 383 – 391 pp
Known economic impact? Yes
Comments: Reducing oyster production in aquaculture (Davis et al., 2010).
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 2021-08-31.
Clarke, C. L., & Therriault, T. W. (2007). Biological synopsis of the invasive tunicate Styela clava (Herdman 1881). Fisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station.
Davis, M. H., & Davis, M. E. (2010). The impact of the ascidian Styela clava Herdman on shellfish farming in the Bassin de Thau, France. Journal of Applied Ichthyology, 26, 12-18. DOI: 10.1111/j.1439-0426.2010.01496.x
Fuller, P (2005) Styela clava. USGS-NAS (Nonindigenous Aquatic Species Database, Gainesville, FL.). http://nas.er.usgs.gov/queries/FactSheet.asp?SpeciesID=1292
Lützen J (1998) Styela clava Herdman (Urochordata, Ascidiacea), a successful immigrant to North West Europe: ecology, propagation and chronology of spread. Helgoländer Meeresuntersuchungen, Volume 52, Issue 3-4, 383 – 391 pp
Known measurable environmental impact? Yes
Comments: Impacts by competing for space and food with native species (Clarke 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 2021-08-31.
Clarke, C. L., & Therriault, T. W. (2007). Biological synopsis of the invasive tunicate Styela clava (Herdman 1881). Fisheries and Oceans Canada, Science Branch, Pacific Region, Pacific Biological Station.
Davis, M. H., & Davis, M. E. (2010). The impact of the ascidian Styela clava Herdman on shellfish farming in the Bassin de Thau, France. Journal of Applied Ichthyology, 26, 12-18. DOI: 10.1111/j.1439-0426.2010.01496.x
Fuller, P (2005) Styela clava. USGS-NAS (Nonindigenous Aquatic Species Database, Gainesville, FL.). http://nas.er.usgs.gov/queries/FactSheet.asp?SpeciesID=1292
Lützen J (1998) Styela clava Herdman (Urochordata, Ascidiacea), a successful immigrant to North West Europe: ecology, propagation and chronology of spread. Helgoländer Meeresuntersuchungen, Volume 52, Issue 3-4, 383 – 391 pp
Included in the final TS list? - Yes
Comments: Assessed by the COMPLETE project experts (2021), included in target species list.