FN Archimer Export Format
PT J
TI Cryptic frenulates are the dominant chemosymbiotrophic fauna at Arctic and high latitude Atlantic cold seeps
BT 
AF SEN, Arunima
   DUPERRON, Sebastien
   HOURDEZ, Stephane
   PIQUET, Berenice
   LEGER, Nelly
   GEBRUK, Andrey
   LE PORT, Anne-Sophie
   SVENNING, Mette Marianne
   ANDERSEN, Ann C.
AS 1:1;2:2,3;3:4;4:2,4;5:2;6:5;7:4;8:1,6;9:4;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 UiT Arctic Univ Norway, Ctr Arctic Gas Hydrate Environm & Climate CAGE, Tromso, Norway.
   Sorbonne Univ, CNRS, MNHN,UMR7208, IRD,UCN,UA,Biol Organismes & Ecosyst Aquat BOREA, Paris, France.
   CNRS, MNHN, MCAM, UMR7245, Paris, France.
   Sorbonne Univ, CNRS, Equipe Adaptat & Biol Invertebres Marins Condit E, Stn Biol Roscoff, Roscoff, France.
   Shirshov Inst Oceanol, Moscow, Russia.
   UiT Arctic Univ Norway, Dept Arctic Marine Biol, Tromso, Norway.
C2 UNIV NORWAY, NORWAY
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
   UNIV PARIS 06, FRANCE
   PP SHIRSHOV OCEANOL INST, RUSSIA
   UNIV NORWAY, NORWAY
IN DOAJ
IF 2.776
TC 25
UR https://archimer.ifremer.fr/doc/00474/58537/61088.pdf
   https://archimer.ifremer.fr/doc/00474/58537/61089.zip
LA English
DT Article
CR VICKING
BO Pourquoi pas ?
AB We provide the first detailed identification of Barents Sea cold seep frenulate hosts and their symbionts. Mitochondrial COI sequence analysis, in combination with detailed morphological investigations through both light and electron microscopy was used for identifying frenulate hosts, and comparing them to Oligobrachia haakonmosbiensis and Oligobrachia webbi, two morphologically similar species known from the Norwegian Sea. Specimens from sites previously assumed to host O. haakonmosbiensis were included in our molecular analysis, which allowed us to provide new insight on the debate regarding species identity of these Oligobrachia worms. Our results indicate that high Arctic seeps are inhabited by a species that though closely related to Oligobrachia haakonmosbiensis, is nonetheless distinct. We refer to this group as the Oligobrachia sp. CPL-clade, based on the colloquial names of the sites they are currently known to inhabit. Since members of the Oligobrachia sp. CPL-clade cannot be distinguished from O. haakonmosbiensis or O. webbi based on morphology, we suggest that a complex of cryptic Oligobrachia species inhabit seeps in the Norwegian Sea and the Arctic. The symbionts of the Oligobrachia sp. CPL-clade were also found to be closely related to O. haakonmosbiensis symbionts, but genetically distinct. Fluorescent in situ hybridization and transmission electron micrographs revealed extremely dense populations of bacteria within the trophosome of members of the Oligobrachia sp. CPL-clade, which is unusual for frenulates. Bacterial genes for sulfur oxidation were detected and small rod shaped bacteria (round in cross section), typical of siboglinid-associated sulfur-oxidizing bacteria, were seen on electron micrographs of trophosome bacteriocytes, suggesting that sulfide constitutes the main energy source. We hypothesize that specific, local geochemical conditions, in particular, high sulfide fluxes and concentrations could account for the unusually high symbiont densities in members of the Oligrobrachia sp. CPL-clade. 
PY 2018
PD DEC
SO Plos One
SN 1932-6203
PU Public Library Science
VL 13
IS 12
UT 000454621900019
DI 10.1371/journal.pone.0209273
ID 58537
ER

EF