AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Schizoporella unicornis [WoRMS] | |
Authority | (Johnston in Wood, 1844) | |
Family | Schizoporellidae | |
Order | Cheilostomatida | |
Class | Gymnolaemata | |
Phylum | Bryozoa | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not known References: Hewitt, C. L., Campbell, M. L., Thresher, R. E., Martin, R. B., Boyd, S., Cohen, B. F., ... & Lockett, M. M. (2004). Introduced and cryptogenic species in port Phillip bay, Victoria, Australia. Marine biology, 144(1), 183-202. Comments: Cosmopolitan, possibly NW Pacific. |
Life form / Life stage (?) |
References (not structured): Tompsett, S., Porter, J. S., Taylor, P. D. 2009. Taxonomy of the fouling cheilostome bryozoans Schizoporella unicornis (Johnston) and Schizoporella errata (Waters). Journal of Natural History, 43(35-36), pp. 2227-2243. |
Sociability / Life stage (?) |
References (not structured): Tompsett, S., Porter, J. S., Taylor, P. D. 2009. Taxonomy of the fouling cheilostome bryozoans Schizoporella unicornis (Johnston) and Schizoporella errata (Waters). Journal of Natural History, 43(35-36), pp. 2227-2243. Comments: S. unicornis is an encrusting, colonial bryozoan. Colonies are commonly orange in color however initial growth is white to yellowish brown, later becoming dark brownish, while growing edges are yellow to light brown. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Asexual Sexual References: Smithsonian Environmental Research Center. (n.d.). Pterois volitans species summary. NEMESIS: National Exotic Marine and Estuarine Species Information System. Retrieved August 20, 2024, from https://invasions.si.edu/nemesis/Panama/species_summary/-536 Comments: S. unicornis is a hermaphrodite. Reproduction may be seasonal or continuous depending on location. Its eggs are contained in their ovicells, or ooecium. Sperm is released into the water column where it is collected by other zooids. Eggs are fertilized and brooded in the ovicells where they mature to free swimming larvae. Parts of existing colonies may start a new colony if seperated. |
Developmental trait (?) | Lecithotrophy References: Smithsonian Environmental Research Center. (n.d.). Pterois volitans species summary. NEMESIS: National Exotic Marine and Estuarine Species Information System. Retrieved August 20, 2024, from https://invasions.si.edu/nemesis/Panama/species_summary/-536 |
Characteristic feeding method / Life stage (?) |
References (not structured): Tompsett, S., Porter, J. S., Taylor, P. D. 2009. Taxonomy of the fouling cheilostome bryozoans Schizoporella unicornis (Johnston) and Schizoporella errata (Waters). Journal of Natural History, 43(35-36), pp. 2227-2243. Comments: Single horn bryozoans are suspension feeders which consume phytoplankton, algae, and bacteria. Zooids feed with ciliated lophophores (tentacle strauctures) that they extend from their orifice to sweep particles into its mouth. |
Mobility / Life stage (?) |
References (not structured): Tompsett, S., Porter, J. S., Taylor, P. D. 2009. Taxonomy of the fouling cheilostome bryozoans Schizoporella unicornis (Johnston) and Schizoporella errata (Waters). Journal of Natural History, 43(35-36), pp. 2227-2243. Comments: Mature colonies are typically 1-4cm in diameter and may form on a wide variety of substrata such as shells, stone, kelp, vessel hulls, piers, overhangs, and other bryozoans. Inner zooids are hexagonal and outer zooids are rectangular in shape with an inflated frontal wall and wide aperature. |
Salinity tolerance range (?) | Venice system: 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Smithsonian Environmental Research Center. (n.d.). Pterois volitans species summary. NEMESIS: National Exotic Marine and Estuarine Species Information System. Retrieved August 20, 2024, from https://invasions.si.edu/nemesis/Panama/species_summary/-536 |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers References: Morgado, E. H., Tanaka, M. O. 2001. The macrofauna associated with the bryozoan Schizoporella unicornis in southeastern Brazil. Scientia Marina, 65(3), pp. 173-181. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Known References: Morgado, E. H., Tanaka, M. O. 2001. The macrofauna associated with the bryozoan Schizoporella unicornis in southeastern Brazil. Scientia Marina, 65(3), pp. 173-181. Comments: Colonies of Schizoporella errata sheltered a rich macrofauna. |
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]. |
Molecular information | Available NCBI (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?term=Schizoporella+unicornis) |
Last update by | Sandra Gečaitė, 2024-08-20 |