AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Styela canopus [WoRMS] | |
Authority | Savigny 1816 | |
Family | Styelidae | |
Order | Stolidobranchia | |
Class | Ascidiacea | |
Phylum | Chordata | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: Indo-West Pacific |
Life form / Life stage (?) |
References (not structured): Salgado-Barragan, J., Mendez, N., Toledano-Granados, A. 2004. Ficopomatus miamiensis (Polychaeta: Serpulidae) and Styela canopus (Ascidiacea: Styelidae), non-native species in Urías estuary, SE Gulf of California, Mexico. CBM-Cahiers de Biologie Marine., 45(2), pp. 167-174. |
Sociability / Life stage (?) |
References (not structured): Salgado-Barragan, J., Mendez, N., Toledano-Granados, A. 2004. Ficopomatus miamiensis (Polychaeta: Serpulidae) and Styela canopus (Ascidiacea: Styelidae), non-native species in Urías estuary, SE Gulf of California, Mexico. CBM-Cahiers de Biologie Marine., 45(2), pp. 167-174. Comments: A solitary tunicate is ovoid, elongate or vase-like in shape, with two openings or siphons. Most solitary tunicates attach to substrates by their side or base, but some attach with a conspicuous stalk. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual References: Danqing, F. E. N. G., Ying, H., Caihuan, K., Shiqiang, Z. H. O. U., Shaojing, L. I. 2006. Settlement and metamorphosis of Styela canopus Savigny larvae in response to some neurotransmitters and thyroxin. Acta Oceanologica Sinica, 25(3), pp. 90-97. |
Developmental trait (?) | Brooding Lecithotrophy References: Danqing, F. E. N. G., Ying, H., Caihuan, K., Shiqiang, Z. H. O. U., Shaojing, L. I. 2006. Settlement and metamorphosis of Styela canopus Savigny larvae in response to some neurotransmitters and thyroxin. Acta Oceanologica Sinica, 25(3), pp. 90-97. Comments: In internal fertilizers, including S. canopus, eggs are brooded and fertilized within the atrial chamber and then released into the water column upon hatching. Fertilized eggs hatch into a tadpole larva with a muscular tail, notochord, eyespots, and a set of adhesive papillae. The lecithotrophic (non-feeding, yolk-dependent) larva swims briefly before settlement. |
Characteristic feeding method / Life stage (?) |
Comments: They are sessile filter feeders with two siphons, an oral and an atrial siphon. Water is pumped in through the oral siphon, where phytoplankton and detritus is filtered by the gills, and passed on mucus strings to the stomach and intestines. Waste is then expelled in the outgoing atrial water. |
Mobility / Life stage (?) |
References (not structured): Salgado-Barragan, J., Mendez, N., Toledano-Granados, A. 2004. Ficopomatus miamiensis (Polychaeta: Serpulidae) and Styela canopus (Ascidiacea: Styelidae), non-native species in Urías estuary, SE Gulf of California, Mexico. CBM-Cahiers de Biologie Marine., 45(2), pp. 167-174. |
Salinity tolerance range (?) | Venice system: 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Smithsonian Environmental Research Center. "Streblospio benedicti Species Summary." NEMESIS, https://invasions.si.edu/nemesis/species_summary/-101. Accessed 21 Aug. 2024. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Radhalakshmi, R., Sivakumar, V., Ali, H. A. J. 2014. Analysis of selected species of ascidians as bioindicators of metals in marine ecosystem. Int. J. Curr. Microbiol. Appl. Sci, 3, pp. 755-764. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Known References: Metwally, A., Shalaby, S. A., Temraz, T. A., Ahmed, M. I. 2021. Antimicrobial and Cytotoxic activities of Ascidian Species Collected from Egyptian Coasts. Bulletin of Faculty of Pharmacy Cairo University, 59(1), pp. 64-75. |
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 (?) | Ballast waters Biofouling References: Salgado-Barragan, J., Mendez, N., Toledano-Granados, A. 2004. Ficopomatus miamiensis (Polychaeta: Serpulidae) and Styela canopus (Ascidiacea: Styelidae), non-native species in Urías estuary, SE Gulf of California, Mexico. CBM-Cahiers de Biologie Marine., 45(2), pp. 167-174. Comments: S. canopus, it can be presumed that it arrived in the lagoon by navigation in ballast water. S. canopus is a widespread member of the fouling community in the world's coastal waters, and has been reported from ships, buoys, piers, and dock. |
Created by | Stephan Gollasch, 2014-09-30 |
Last update by | Sandra Gečaitė, 2024-08-21 |