摘要：A revision of the non-indigenous ascidians in the Mediterranean Sea has been carried out, from published and unpublished records. The records considered include the last 50 years, which encompasses the period after the P�r�s inventory (in 1958). Our aim is to analyze the ancient and recent records with comments about their validity and possible introduction vectors.
关键词：Ascidians;Mediterranean Sea;invasion/introduction;non-indigenous species
