|Researched by||Chloe Wilson||Refereed by||Admin|
|Authority||(Johnston in Wood, 1844)|
|Other common names||-||Synonyms||-|
Schizoporella unicornis forms sheets with one or more layers of zooids on various substrata on the lower shore. The whitish or pink colonies coat hard surfaces such as stones and shells or the holdfasts of large algae (e.g. Himanthalia and Laminaria). The zooids are arranged in a regular pattern. Individual zooids are convex, usually rectangular in shape, and typically 0.4 - 0.7 mm x 0.3 - 0.5 mm in size. Deep grooves mark the boundaries between the zooids. Each zooid has a D-shaped orifice with a V-shaped indentation in the middle of the straight edge. A single or pair of raised avicularia sit either side of the orifice. Later in development, a conical umbo (small projection) appears directly below the V-shaped sinus of each primary orifice.
Schizoporella unicornis is scattered circumglobally, mainly in temperate coastal regions. Most records are located in the northern hemisphere, with colonies commonly occurring on the West and East coasts of the USA, the British Isles and the Northeastern Mediterranean. However, it has also been recorded in the tropics (e.g. Hawaii and Port Sudan). In the southern hemisphere, Schizoporella unicornis has been found at a single location near Curitiba, Brazil.
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Hayward, P.J. & Ryland, J.S. (ed.) 1995a. The marine fauna of the British Isles and north-west Europe. Volume 2. Molluscs to Chordates. Oxford Science Publications. Oxford: Clarendon Press.
Hayward, P.J. & Ryland, J.S. 1999. Cheilostomatous Bryozoa. Part II Hippothooidea - Celleporoidea. London: Academic Press.[Synopses of the British Fauna, no. 14. (2nd edition)]
Porter, J., 2012. Seasearch Guide to Bryozoans and Hydroids of Britain and Ireland. Ross-on-Wye: Marine Conservation Society.
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Last Updated: 10/10/2017
Tags: Bryozoa bryozoan