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AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
| Species | Ciona robusta [WoRMS] | |
| Authority | Hoshino & Tokioka, 1967 | |
| Family | Cionidae | |
| Order | Phlebobranchia | |
| Class | Ascidiacea | |
| Phylum | Chordata | |
| Synonym (?) | ||
| Sub-species level (?) | Not entered |
| Native origin (?) | Not entered Comments: Northwest Pacific |
| Life form / Life stage (?) |
References (not structured): Wilson, E. R., Murphy, K. J., Wyeth, R. C. 2022. Ecological review of the Ciona species complex. The Biological Bulletin, 242(2), pp. 153-171. |
| Sociability / Life stage (?) |
Comments: C. robusta is a solitary tunicate with an elongated, cylindrical or vase-shaped body. |
| Reproductive frequency (?) | Iteroparous |
| Reproductive type (?) | Sexual References: Wilson, E. R., Murphy, K. J., Wyeth, R. C. 2022. Ecological review of the Ciona species complex. The Biological Bulletin, 242(2), pp. 153-171. Comments: Solitary ascidians are hermaphroditic, meaning that both eggs and sperm are released to the atrial chamber. |
| Developmental trait (?) | Spawning |
| Characteristic feeding method / Life stage (?) |
Comments: Ciona robusta are marine filter feeders (suspension feeders), and to feed, they draw water in through the oral siphon, which contains gills that filter phytoplankton, bacteria, and detritus, which are their main food sources. Water is then drawn into the stomach and intestines using the mucus strings, then finally expelled using the atrial siphon. |
| Mobility / Life stage (?) |
Comments: They tend to be found in both protected harbors and natural substrates, with areas such as docks, boat hulls, buoys, ropes, pilings, rocks, shells, aquaculture gear, and boulders being common habitats for them. |
| Salinity tolerance range (?) | Exact range: 21 - 50 References: Kim, M. K., Kim, D. H., Park, J. U., Kim, D. H., Yoon, T. J., Kim, D. G., ... Shin, S. 2019. Effects of temperature and salinity on the egg development and larval settlement of Ciona robusta (Ascidiacea, Phlebobranchia, Cionidae). Ocean Science Journal, 54, pp. 97-106. Marin, M. G., Bressan, M., Beghi, L., Brunetti, R. 1987. Thermo-haline tolerance of Ciona intestinalis (L., 1767) at different developmental stages. Cah Biol Mar, 28(1), pp. 47-57. Comments: The optimal salinity for the hatching of C. robusta was observed to be approximately 35 psu. |
| Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
| Toxicity / Life stage (?) | Not relevant |
| Bioaccumulation association (?) | Anthropogenic chemical compounds References: Caputi, L., Toscano, F., Arienzo, M., Ferrara, L., Procaccini, G., Sordino, P. 2019. Temporal correlation of population composition and environmental variables in the marine invader Ciona robusta. Marine Ecology, 40(2), e12543. |
| Known human health impact? | Known References: Gallo, A., Penna, Y. M., Russo, M., Rosapane, M., Tosti, E., Russo, G. L. 2024. An organic extract from ascidian Ciona robusta induces cytotoxic autophagy in human malignant cell lines. Frontiers in Chemistry, 12, 1322558. Comments: C. robusta extract is still undetermined, our data suggest the presence in it of bioactive compounds possessing anticancer activity. |
| Known economic impact? | Known References: Robinson, T. B., Havenga, B., Van der Merwe, M., Jackson, S. 2017. Mind the gap–context dependency in invasive species impacts: a case study of the ascidian Ciona robusta. Li, S., Huang, X., Chen, Y., Li, X., Zhan, A. 2019. Identification and characterization of proteins involved in stolon adhesion in the highly invasive fouling ascidian Ciona robusta. Biochemical and biophysical research communications, 510(1), pp. 91-96. Comments: Being a fouling organism, they can have negative economic impact on aquaculture operations through fouling equipment and reducing the growth of culture shellfish. |
| Known measurable environmental impact? | Known References: Wilson, E. R., Murphy, K. J., Wyeth, R. C. 2022. Ecological review of the Ciona species complex. The Biological Bulletin, 242(2), pp. 153-171. Comments: C. robusta also had greater relative impacts on phytoplankton abundances. |
| Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF] Available at: https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf [Accessed 1 July 2024]. |
| Association with vessel vectors (?) | Biofouling References: Li, S., Huang, X., Chen, Y., Li, X., Zhan, A. 2019. Identification and characterization of proteins involved in stolon adhesion in the highly invasive fouling ascidian Ciona robusta. Biochemical and biophysical research communications, 510(1), pp. 91-96. Kim, M. K., Kim, D. H., Park, J. U., Kim, D. H., Yoon, T. J., Kim, D. G., ... Shin, S. 2019. Effects of temperature and salinity on the egg development and larval settlement of Ciona robusta (Ascidiacea, Phlebobranchia, Cionidae). Ocean Science Journal, 54, pp. 97-106. |
| Created by | Aleksas Narščius, 2016-09-02 |
| Last update by | Sandra Gečaitė, 2024-08-06 |