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Botryllus schlosseri
Image courtesy of Melissa Frey, Royal BC Museum, Canada
Botryllus schlosseri
Taxonomic Group: Tunicates


The origin of the Golden Star Tunicate, Botryllus schlosseri, is uncertain. It is globally widespread and found on the temperate coasts of Europe, Asia, both sides of North America, Chile, Argentina, South Africa, Australia and oceanic islands such as Bermuda, the Azores and New Zealand. It is common in fouling communities and has likely spread globally through shipping, oyster culture and other aquaculture transfers. In the lower Chesapeake Bay, B. schlosseri is a fouling pest impacting oyster aquaculture, but not natural oyster beds. In some areas of its introduced range, there is concern that B. schlosseri competes with native species for space, especially on artificial substrates where it can grow rapidly.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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