Contributors: Universidad Católica de la Santísima Concepción (UCSC); Adaptation et diversité en milieu marin (ADMM); Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff = Roscoff Marine Station (SBR); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Institut des Sciences de l'Evolution de Montpellier (UMR ISEM); Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE); Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM); Travels and stay of JP, CDT and FV in Chile and France, and part of the molecular experiments,were supported by the Sorbonne Université grant (Idex SUPER, Bourse de Mobilité Internationale2014–2015), the International Research Network “Diversity, Evolution and Biotechnology ofMarine Algae” (GDRI No. 0803) and fellowships from the UCSC (Postgraduate, InstitutionalRelations, and Research and Innovation Directorates). JP was funded by the Magíster enEcología Marina from the UCSC, and AB by the CONICYT, FONDECYT/Regular 1130868project.
نبذة مختصرة : International audience ; Ship hull fouling is recognized as an important vector for the introduction of nonindigenous species (NIS), which has been studied globally but no empirical works exist in the Southeast Pacific. The present study examined fouling organisms on the hulls of three ships in one international Chilean port, and compared them with those on settling plates and natural substrates. Also, genetic analyses were perfomed on the most common NIS recorded in order to explore number and potential origin of the genetic linages found. The highest number of total taxa and NIS were found on ship hulls, with three species identified as NIS in ship samplings. Settling plates displayed the largest number of taxa, with a large abundance of the invasive tunicate Ciona robusta, which also showed high mitochondrial genetic diversity. This study showed that Chilean coasts are subjected to both NIS colonization and propagule pressure through ship hulls. Biosecurity measures should urgently be taken on ship hulls along these coasts.
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