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Polyclinum constellatum
Image courtesy of Rosana M. Rocha, Universidade Federal do Paraná (UFPR), Brazil, the grey colony.
Polyclinum constellatum
Taxonomic Group: Tunicates


Polyclinum constellatum is a colonial encrusting tunicate. It can be grey, purplish brown or green in color, with visible white or beige systems of zooids. It was first described from Mauritius in 1816. Although this discovery suggests an Indian Ocean origin, native status in the tropical Atlantic cannot be excluded. It has been introduced to Hawaii, Guam, and the West coast of North America and is considered cryptogenic through much of its global range, including India, New Caledonia, the Gulf of Mexico, the Caribbean, Brazil and Tanzania. Polyclinum constellatum is often reported from man-made structures such as pilings, dock floats, wharfs and buoys, but is also known from natural substrates such as mangroves, dead corals and rocks. In Hong Kong, it overgrows cultured mussels, but no other economic or ecological impacts have been reported.

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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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