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Commonly known as sun corals, Tubastraea coccinea and T. tagusensis are invasive scleractinians that are changing the marine biodiversity of Brazilian coastal ecosystems. Since their first report in Brazilian waters (an offshore oil platform in the Campos Basin; Castro and Pires 2001), both species have spread over more than 3000 km in the SW Atlantic, threatening endemic species such as Mussismilia hispida (Creed et al. 2017). At Ilha dos Búzios, São Paulo, a locality where the invasion has covered the vertical portion of the infralittoral, we observed that sun corals are outcompeting Palythoa caribaeorum. The latter is one of the most dominant species in shallow waters along the Brazilian coast (Fig. 1a). Palythoa caribaeorum is considered an aggressive competitor due to the production of palytoxin (Gleibs et al. 1995), but when in direct contact with sun corals, P. caribaeorum colonies receded or necrosed (Fig. 1b–e). Thus, since P. caribaeorum is a community structuring species on Brazilian rocky shores, its replacement with the invasive sun corals may change biodiversity and community dynamics in shallow waters. Monitoring and management is urgently needed to control invasive Tubastrea spp. and the potential biodiversity loss due to their invasion.
References
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Acknowledgements
The authors thank the São Paulo University Marine Biology Centre (CEBIMar) for their support. B.L.P. Luz gratefully acknowledges the Coastal and Ocean Systems Graduate Program and Higher Education Personnel Improvement Coordination for the Ph.D. scholarship.
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Luz, B.L.P., Kitahara, M.V. Could the invasive scleractinians Tubastraea coccinea and T. tagusensis replace the dominant zoantharian Palythoa caribaeorum in the Brazilian subtidal?. Coral Reefs 36, 875 (2017). https://doi.org/10.1007/s00338-017-1578-5
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DOI: https://doi.org/10.1007/s00338-017-1578-5