Detecting the non-native Grateloupia turuturu (Halymeniales, Rhodophyta) in southern Brazil.

Grateloupia turuturu is a Pacific native species with invasive behaviour that leads to a wide distribution around the world. This study reports collections of fertile tetrasporophytes and female gametophytes of G. turuturu on southern Brazilian coasts and constitutes its first record for the south-western Atlantic. The identity of G. turuturu was confirmed through molecular (COI-5P and rbcL markers) and morphological assessments. Putative paths of introduction are discussed. [ABSTRACT FROM AUTHOR]