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AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
| Species | Botrylloides diegensis [WoRMS] | |
| Authority | Ritter & Forsyth, 1917 | |
| Family | Styelidae | |
| Order | Stolidobranchia | |
| Class | Ascidiacea | |
| Phylum | Chordata | |
| Synonym (?) | ||
| Sub-species level (?) | Not entered |
| Native origin (?) | Not entered Comments: North-west Pacific |
| Life form / Life stage (?) |
References (not structured): Kassmer, S. H., Langenbacher, A. D., De Tomaso, A. W. 2020. Integrin-alpha-6+ Candidate stem cells are responsible for whole body regeneration in the invertebrate chordate Botrylloides diegensis. Nature communications, 11(1), 4435. |
| Sociability / Life stage (?) |
References (not structured): Kassmer, S. H., Langenbacher, A. D., De Tomaso, A. W. 2020. Integrin-alpha-6+ Candidate stem cells are responsible for whole body regeneration in the invertebrate chordate Botrylloides diegensis. Nature communications, 11(1), 4435. Comments: B. diegensis is a colonial tunicate. Its colonies are flat encrusting, usually ~5 mm thick, and several centimeters across. The tunic is soft and transparent in preserved specimens. |
| Reproductive frequency (?) | Iteroparous |
| Reproductive type (?) | Asexual Sexual References: Kassmer, S. H., Langenbacher, A. D., De Tomaso, A. W. 2020. Integrin-alpha-6+ Candidate stem cells are responsible for whole body regeneration in the invertebrate chordate Botrylloides diegensis. Nature communications, 11(1), 4435. Clarke, R. M. 2022. Investigating the early stages of regeneration and wound healing in Botrylloides diegensis (Doctoral dissertation, University of Otago, Dunedin, New Zealand). Comments: B. diegensis, zooids reproduce asexually, and the adult body plan consists of a colony of clonally derived individuals embedded within a gelatinous structure called a tunic. B. diegensis can sexually reproduce as zooids are hermaphrodites. Colonies originate from a sexually produced planktonic tadpole larva that attaches to a substrate after its release. The egg is ovulated in the brood pouch, where it is fertilised and undergoes embryogenesis. |
| Developmental trait (?) | Brooding Viviparous References: Clarke, R. M. 2022. Investigating the early stages of regeneration and wound healing in Botrylloides diegensis (Doctoral dissertation, University of Otago, Dunedin, New Zealand). Comments: B. diegensis is a viviparous hermaphroditic marine sessile invertebrate. |
| Characteristic feeding method / Life stage (?) |
References (not structured): Kassmer, S. H., Langenbacher, A. D., De Tomaso, A. W. 2020. Integrin-alpha-6+ Candidate stem cells are responsible for whole body regeneration in the invertebrate chordate Botrylloides diegensis. Nature communications, 11(1), 4435. Comments: Zooids have a complex anatomy: they are filter feeders with siphons and a branchial basket, gastrointestinal tract, central and peripheral nervous system, endocrine glands, a heart, and a circulatory system consisting of 8–12 blood cell types. Water is pumped through the oral siphon, through finely meshed ciliated gills, where it is filtered and expelled through the oral siphon. Phytoplankton and detritus is filtered by the gills and passed on mucus strings to the stomach and intestines where waste is expelled in the outgoing atrial water. |
| Mobility / Life stage (?) |
References (not structured): Kassmer, S. H., Langenbacher, A. D., De Tomaso, A. W. 2020. Integrin-alpha-6+ Candidate stem cells are responsible for whole body regeneration in the invertebrate chordate Botrylloides diegensis. Nature communications, 11(1), 4435. Comments: The abdomen ends in stolons which area attached to the substrate and neighboring zooids. Following a free-swimming stage, the larvae settle and metamorphose into a sessile invertebrate adult, called a zooid. |
| Salinity tolerance range (?) | Exact range: 18 - 35 References: Smithsonian Environmental Research Center. (n.d.). Bostrycapulus odites (Bostrycapulus). Retrieved August 5, 2024, from https://invasions.si.edu/nemesis/species_summary/-448 |
| Habitat modifying ability potential (?) | Autogenic ecosystem engineers References: Lee, T., Shin, S. 2021. First Record of Colonial Ascidian, Botrylloides diegensis Ritter and Forsyth, 1917 (Ascidiacea, Stolidobranchia, Styelidae), in South Korea. Water, 13(16), 2164. Comments: Botrylloides species are important members of the fouling community colonizing artificial substrates on the Pacific coast of the United States |
| Toxicity / Life stage (?) | Not relevant |
| Bioaccumulation association (?) | Unknown Comments: Not available. |
| Known human health impact? | Known Comments: Harmless. |
| Known economic impact? | Known References: Clarke, R. M. 2022. Investigating the early stages of regeneration and wound healing in Botrylloides diegensis (Doctoral dissertation, University of Otago, Dunedin, New Zealand). Comments: B. diegensis is an ideal organism for studying regeneration. It has a remarkable capacity to undergo whole-body regeneration and is closely related to humans. It also has a fast growth rate, with a short life cycle, which is advantageous in a laboratory model species. |
| Known measurable environmental impact? | Not known Comments: Not available. |
| 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 (?) | Unknown References: Lee, T., Shin, S. 2021. First Record of Colonial Ascidian, Botrylloides diegensis Ritter and Forsyth, 1917 (Ascidiacea, Stolidobranchia, Styelidae), in South Korea. Water, 13(16), 2164. Comments: Possible vectors are fouling and oyster transplants. |
| Last update by | Sandra Gečaitė, 2024-08-05 |