FN Archimer Export Format
PT J
TI High connectivity across the fragmented chemosynthetic ecosystems of the deep Atlantic Equatorial Belt: efficient dispersal mechanisms or questionable endemism?
BT 
AF TEIXEIRA, Sara
   OLU, Karine
   DECKER, Carole
   CUNHA, Regina L.
   FUCHS, Sandra
   HOURDEZ, Stephane
   SERRAO, Ester A.
   ARNAUD-HAOND, Sophie
AS 1:1,2;2:1;3:1;4:2;5:1;6:3;7:2;8:1;
FF 1:PDG-REM-EEP-LEP;2:PDG-REM-EEP-LEP;3:PDG-REM-EEP-LEP;4:;5:PDG-REM-EEP-LEP;6:;7:;8:PDG-RBE-HM-RHSETE;
C1 IFREMER, Lab Environm Profond EEP LEP, CS10070, F-2980 Plouzane, France.
   Univ Algarve, Ctr Marine Sci, CIMAR, P-8005139 Faro, Portugal.
   Equipe Ecophysiol Adaptat & Evolut Mol, Stn Biol Roscoff, F-29680 Roscoff, France.
C2 IFREMER, FRANCE
   UNIV ALGARVE, PORTUGAL
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
SI BREST
   SETE
SE PDG-REM-EEP-LEP
   PDG-RBE-HM-RHSETE
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-univ-france
IF 5.84
TC 36
UR https://archimer.ifremer.fr/doc/00157/26789/24950.pdf
LA English
DT Article
CR CONGOLOBE
   MOMARETO
   SERPENTINE
   WACS
BO Pourquoi pas ?
   Unknown
DE ;Atlantic equatorial belt;chemosynthetic habitats;deep-sea connectivity;endemic bivalves;endemic shrimp;genetic diversity;microsatellite markers;mitochondrial COI gene
AB Chemosynthetic ecosystems are distributed worldwide in fragmented habitats harbouring seemingly highly specialized communities. Yet, shared taxa have been reported from highly distant chemosynthetic communities. These habitats are distributed in distinct biogeographical regions, one of these being the so-called Atlantic Equatorial Belt (AEB). Here, we combined genetic data (COI) from several taxa to assess the possible existence of cryptic or synonymous species and to detect the possible occurrence of contemporary gene flow among populations of chemosynthetic species located on both sides of the Atlantic. Several Evolutionary Significant Units (ESUs) of Alvinocarididae shrimp and Vesicomyidae bivalves were found to be shared across seeps of the AEB. Some were also common to hydrothermal vent communities of the Mid-Atlantic Ridge (MAR), encompassing taxa morphologically described as distinct species or even genera. The hypothesis of current or very recent large-scale gene flow among seeps and vents was supported by microsatellite analysis of the shrimp species Alvinocaris muricola/Alvinocaris markensis across the AEB and MAR. Two nonmutually exclusive hypotheses may explain these findings. The dispersion of larvae or adults following strong deep-sea currents, possibly combined with biochemical cues influencing the duration of larval development and timing of metamorphosis, may result in large-scale effective migration among distant spots scattered on the oceanic seafloor. Alternatively, these results may arise from the prevailing lack of knowledge on the ocean seabed, apart from emblematic ecosystems (chemosynthetic ecosystems, coral reefs or seamounts), where the widespread classification of endemism associated with many chemosynthetic taxa might hide wider distributions in overlooked parts of the deep sea.
PY 2013
PD SEP
SO Molecular Ecology
SN 0962-1083
PU Wiley-blackwell
VL 22
IS 18
UT 000324022600006
BP 4663
EP 4680
DI 10.1111/mec.12419
ID 26789
ER

EF