RT Conference Proceedings T1 Arguments to consider Rugulopteryx okamurae (Dictyotales, Ochrophyta) the potential first seaweed species to be included in the lists of invasive species of European Union concern A1 Altamirano-Jeschke, María A1 Rosa, Julio de la A1 Carmona-Fernández, Raquel A1 Kawai, Hiroshi A1 Hanyuda, Takeaki A1 Gómez, Amelia A1 Rull, Jordi A1 Zanolla-Balbuena, Maríanela Fernanda A1 Rosas-Guerrero, Jesús A1 Blasco, Cristina A1 Muñoz-Gallego, Antonio Román K1 Especies exóticas invasoras K1 Botánica - Investigación AB In 2015 a new exotic seaweed with invasive behaviour was detected at the Strait of Gibraltar (western Mediterranean), which was morphological and genetically identified as Rugulopteryx okamurae. Due to its rapid expansion and remarkable ecological, economic, and social impacts, the species was included in the Spanish Checklist of exotic invasive species. However, distribution models of the species identified other European coasts as favourable for this new invader. In this presentation we provide scientific arguments for the inclusion of R. okamurae in the list of invasive species of European Union concern, becoming the first seaweed species to be included in that list. YR 2022 FD 2022 LK https://hdl.handle.net/10630/23989 UL https://hdl.handle.net/10630/23989 LA eng NO Fundación Biodiversidad-Miteco.Universidad de Málaga (Plan propio de investigación).Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026