FN Archimer Export Format PT J TI Amphi-Atlantic cold-seep Bathymodiolus species complexes across the equatorial belt BT AF OLU, Karine VON COSEL, R HOURDEZ, S CARNEY, S JOLLIVET, D AS 1:1;2:2;3:3;4:4;5:3; FF 1:PDG-DOP-DCB-EEP-LEP;2:;3:;4:;5:; C1 IFREMER, Ctr Brest, DEEP, F-29280 Plouzane, France. Museum Natl Hist Nat, US MNHN 0602, F-75231 Paris 05, France. UPMC, CNRS, Stn Biol Roscof, UMR 7144, F-29482 Roscoff, France. Penn State Univ, Dept Biol, University Pk, PA 16802 USA. C2 IFREMER, FRANCE MNHN, FRANCE UNIV PARIS 06, FRANCE UNIV PENN STATE, USA SI BREST SE PDG-DOP-DCB-EEP-LEP IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france copubli-int-hors-europe IF 1.795 TC 73 TU Centre national de la recherche scientifique Institut national de la santé et de la recherche médicale Muséum national d'histoire naturelle Université Pierre et Marie Curie UR https://archimer.ifremer.fr/doc/2007/publication-4064.pdf LA English DT Article CR BIOZAIRE 1 BIOZAIRE 2 DIAPISUB HOT-96 MARVEL MICROSMOKE NAUDUR YOKOSUKA90.LEG1 YOKOSUKA90.LEG2 YOKOSUKA91.LEG1 BO Unknown Anchored Buoy Le Nadir L'Atalante Yokosuka DE ;RDNA ITS2;Mitochondrial cytochrome oxydase;Amphi Atlantic species;Cold seeps;Bathymodiolus AB Deep-sea bivalves of the subfamily Bathymodiolinae (family Mytilidae) are very widespread and form dense beds in reduced environments such as hydrothermal vents and cold seeps. Bathymodiolus mussels recently discovered on African cold seeps strangely resemble Gulf of Mexico and Barbados seep species. This raises intriguing questions regarding their taxonomic relationships and their dispersal capabilities across the Atlantic equatorial belt. The morphological study of the shell and soft parts of mussels from either sites of the Atlantic shows that they form two distinct groups: the Bathymodiolus boomerang group (also including Bathymodiolus heckerae and a species from Africa), and the Bathymodiolus childressi group (also including Bathymodiolus mauritanicus and one species from Barbados). Phylogenetic relationships inferred from the nucleotide sequences of the ribosomal DNA internal transcribed spacer (ITS-2) and mitochondrial cytochrome c oxidase subunit I (COI) confirmed morphological analyses and the existence of two amphi-Atlantic complexes of species. Both ITS2 and COI phylogenies indicate almost no difference between the two eastern Atlantic seep mussels (Bathymodiolus sp. A and B. mauritanicus) and their western Atlantic counterparts (B. boomerang and Bathymodiolus sp. B; Barbados Prism cold seeps). In the B. boomerang complex, B. heckerae seems to differ from the Barbados and the African species, whereas these latter two are not distinguishable. In the B. childressi complex, relationships are less clear and do not support the description of new species from the Barbados. Past and present-day connections across the Atlantic are discussed in the light of both larval dispersal capabilities of the mussels and the equatorial Atlantic circulation to appreciate whether these species could represent true amphi-Atlantic species. PY 2007 PD NOV SO Deep Sea Research Part I: Oceanographic Research Papers SN 0967-0637 PU Elsevier VL 54 IS 11 UT 000251665400003 BP 1890 EP 1911 DI 10.1016/j.dsr.2007.07.004 ID 4064 ER EF