FN Archimer Export Format PT J TI Phylogeography of the reef-building polychaetes of the genus Phragmatopoma in the western Atlantic Region BT AF NUNES, Flavia VAN WORMHOUDT, Alain FARONI-PEREZ, Larisse FOURNIER, Jerome AS 1:1,2;2:3,4;3:3,5;4:3,4; FF 1:PDG-ODE-DYNECO-LEBCO;2:;3:;4:; C1 Univ Europeenne Bretagne UEB, Univ Brest UBO, Inst Univ Europeen Mer IUEM,LEMAR UMR 6539, CNRS,UBO,IRD,Ifremer,Lab Sci Environm Marin, Plouzane, France. Ifremer Ctr Bretagne, Lab Ecol Benth Cotiere LEBCO, DYNECO, F-29280 Plouzane, France. Museum Natl Hist Nat, Stn Biol Marine, Concarneau, France. Museum Natl Hist Nat, CNRS, UMR BOREA 7208, Paris, France. Univ Fed Santa Catarina, PPGECO, Dept Zool & Ecol, Florianopolis, SC, Brazil. C2 UBO, FRANCE IFREMER, FRANCE MNHN, FRANCE MNHN, FRANCE UNIV FED SANTA CATARINA, BRAZIL SI BREST SE PDG-ODE-DYNECO-LEBCO UM LEMAR IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france copubli-int-hors-europe copubli-sud IF 4.154 TC 17 UR https://archimer.ifremer.fr/doc/00363/47376/47710.pdf LA English DT Article DE ;biogeographical barrier;Brazilian Province;Caribbean Province;connectivity;larval dispersal;Phragmatopoma caudata;phylogenetics;phylogeography;polychaete reef;western Atlantic Region AB Aim To verify the synonymy of the reef-building polychaete Phragmatopoma caudata (described for the Caribbean) and Phragmatopoma lapidosa (described for Brazil) using molecular data. To evaluate the patterns of genetic diversity and connectivity among populations from Florida to South Brazil. Location Intertidal zone in the western Atlantic biogeographical Region: Brazil, eastern Caribbean and Florida (USA). Methods DNA sequence data from one mitochondrial (cox-1) and one nuclear ribosomal (ITS-1) loci were obtained from 11 populations of P. caudata spanning the coasts of Brazil, eastern Caribbean and Florida. Phylogenetic relationships among populations of P. caudata and other members of the genus were inferred by Bayesian methods. Population differentiation was evaluated by Bayesian analysis of population structure (baps), AMOVA and pairwise φst. Demographic history was inferred by Bayesian skyline plots. Results Phylogenetic inference supported the interpretation of a single species of Phragmatopoma spanning the Brazilian and Caribbean Provinces of the western Atlantic Region. Little population structure was observed across the species distribution, with the exception of the Florida population. The baps analysis supported a 2-population model, with population differentiation being strong and significant between Florida and all other Atlantic populations for cox-1, and significant between Florida and most populations for ITS-1. Differences in genetic diversity were not significant between Caribbean and Brazilian populations, although several populations in Brazil had low values for diversity indices. Bayesian skyline plots indicate population expansion starting at c. 200 ka. Main conclusions Phragmatopoma caudata is able to maintain genetic connectivity across most of its geographical range, with population differentiation being observed only between Florida and all other localities, possibly due to ecological speciation in the transition zone between tropical and subtropical environments. Long-distance connectivity across much of the species range is likely the result of long-lived larvae that are tolerant to a wide range of environmental conditions. PY 2017 PD JUN SO Journal Of Biogeography SN 0305-0270 PU Wiley VL 44 IS 7 UT 000403676900015 BP 1612 EP 1625 DI 10.1111/jbi.12938 ID 47376 ER EF