Dear all, On behalf of Paolo Cipriani and all the co-authors, I would like to let you know about our recent paper in */Nature /**(Scientific reports)*. /*Distribution and genetic diversity of Anisakis spp. in cetaceans from the Northeast Atlantic Ocean and the Mediterranean Sea */ Paolo Cipriani1,2*, Marialetizia Palomba3, Lucilla Giulietti2, Federica Marcer4, Sandro Mazzariol4, Mario Santoro5, Renato Aco Alburqueque1, Pablo Covelo6, Alfredo López6,7, M. Begoña Santos8, Graham J. Pierce9, Andrew Brownlow10, Nicholas J. Davison10, Barry McGovern11, Alexandros Frantzis12, Paraskevi Alexiadou12, Dánjal Petur Højgaard13, Bjarni Mikkelsen13, Michela Paoletti3, Giuseppe Nascetti3, Arne Levsen2 & Simonetta Mattiucci1* *Abstract* Parasite biodiversity in cetaceans represents a neglected component of the marine ecosystem. This study aimed to investigate the distribution and genetic diversity of anisakid nematodes of the genus Anisakis sampled in cetaceans from the Northeast Atlantic Ocean and the Mediterranean Sea. A total of 478 adults and pre-adults of Anisakis spp. was identified by a multilocus genetic approach (mtDNA cox2, EF1 α − 1 nDNA and nas 10 nDNA gene loci) from 11 cetacean species. A clear pattern of host preference was observed for Anisakis spp. at cetacean family level: A. simplex (s.s.) and A. pegreffii infected mainly delphinids; A. physeteris and A. brevispiculata were present only in physeterids, and A. ziphidarum occurred in ziphiids. The role of cetacean host populations from different waters in shaping the population genetic structure of A. simplex (s.s.), A. pegreffii and A. physeteris was investigated for the first time. Significant genetic sub-structuring was found in A. simplex (s.s.) populations of the Norwegian Sea and the North Sea compared to those of the Iberian Atlantic, as well as in A. pegreffii populations of the Adriatic and the Tyrrhenian Seas compared to those of the Iberian Atlantic waters. Substantial genetic homogeneity was detected in the Mediterranean Sea population of A. physeteris. This study highlights a strong preference by some Anisakis spp. for certain cetacean species or families. Information about anisakid biodiversity in their cetacean definitive hosts, which are apex predators of marine ecosystems, acquires particular importance for conservation measures in the context of global climate change phenomena. This an open access publication that can be reached from the following link: https://www.nature.com/articles/s41598-022-17710-1.epdf?sharing_token=Cp0y_7... For further details, please contact the first author at: paolo.cipriani@hi.no Best wishes, Alexandros -- __________________________________________________________ Dr. Alexandros Frantzis Scientific director Pelagos Cetacean Research Institute Terpsichoris 21 16671 Vouliagmeni, GREECE Tel.: +30-210-8960108 e-mail:afrantzis@otenet.gr website:http://www.pelagosinstitute.gr https://www.youtube.com/channel/UCVyp-eiteK0GBb0Lr5psk0g __________________________________________________________ -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus