FN Archimer Export Format
PT J
TI Investigation of Capitella spp. symbionts in the context of varying anthropic pressures: First occurrence of a transient advantageous epibiosis with the giant bacteria Thiomargarita sp. to survive seasonal increases of sulfides in sediments
BT 
AF Hourdez, Stéphane
   Boidin-Wichlacz, Céline
   Jollivet, Didier
   Massol, François
   Rayol, Maria Claudia
   Bruno, Renato
   Zeppilli, Daniela
   Thomas, Frederic
   Lesven, Ludovic
   Billon, Gabriel
   Duperron, Sebastien
   Tasiemski, Aurélie
AS 1:1;2:2,3;3:4;4:2,3;5:5;6:2,3;7:6;8:7;9:8;10:8;11:9;12:2,3;
FF 1:;2:;3:;4:;5:;6:;7:PDG-REM-EEP-LEP;8:;9:;10:;11:;12:;
C1 Observatoire Océanologique de Banyuls-sur-Mer, UMR 8222 CNRS-SU, avenue Pierre Fabre, 66650 Banyuls-sur-Mer, France
   Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR9017-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
   Univ. Lille, CNRS, UMR 8198 - Evo-Eco-Paleo, F-59000 Lille, France
   Sorbonne Université, CNRS UMR 7144 ‘Adaptation et Diversité en Milieux Marins’ (AD2M), Team ‘Dynamique de la Diversité Marine’ (DyDiv), Station biologique de Roscoff, Place G. Teissier, 29680 Roscoff, France
   Centro Interdisciplinar em Energia e Ambiente - CIEnAm, Universidade Federal da Bahia, 40170-115 Salvador, BA, Brazil
   IFREMER, Centre Brest, REM/EEP/LEP, ZI de la Pointe du Diable, CS10070, 29280 Plouzané, France
   CREEC/CREES, UMR IRD-Université de Montpellier, Montpellier, France
   Univ. Lille, CNRS, UMR 8516 - LASIRE, Laboratoire Avancé de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, F-59000 Lille, France
   Muséum National d'Histoire Naturelle, CNRS UMR7245 Mécanismes de Communication et Adaptation des Micro-organismes, 12 rue Buffon, 75005 Paris, France
C2 CNRS, FRANCE
   UNIV LILLE, FRANCE
   UNIV LILLE, FRANCE
   UNIV SORBONNE, FRANCE
   UNIV FED BAHIA, BRAZIL
   IFREMER, FRANCE
   UNIV MONTPELLIER, FRANCE
   UNIV LILLE, FRANCE
   MNHN, FRANCE
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 10.754
TC 5
UR https://archimer.ifremer.fr/doc/00709/82120/86902.pdf
LA English
DT Article
DE ;Chemosynthetic habitat;Eutrophication;Worms;Marine annelids;Coastal;Ectosymbiosis
AB Capitella spp. is considered as an important ecological indicator of eutrophication due to its high densities in organic-rich, reduced, and sometimes polluted coastal ecosystems. We investigated whether such ability to cope with adverse ecological contexts might be a response to the microorganisms these worms are associated with. In populations from the French Atlantic coast (Roscoff, Brittany), we observed an epibiotic association covering the tegument of 20–30% specimens from an anthropized site while individuals from a reference, non-anthropized site were devoid of any visible epibionts. Using RNAseq, molecular and microscopic analyses, we described and compared the microbial communities associated with the epibiotic versus the non-epibiotic specimens at both locations. Interestingly, data showed that the epibiosis is characterized by sulfur-oxidizing bacteria among which the giant bacterium Thiomargarita sp., to date only described in deep sea habitats. Survey of Capitella combined with the geochemical analysis of their sediment revealed that epibiotic specimens are always found in muds with the highest concentration of sulfides, mostly during the summer. Concomitantly, tolerance tests demonstrated that the acquisition of epibionts increased survival against toxic level of sulfides. Overall, the present data highlight for the first time a peculiar plastic adaptation to seasonal variations of the habitat based on a transcient epibiosis allowing a coastal species to survive temporary harsher conditions. 
PY 2021
PD DEC
SO Science Of The Total Environment
SN 0048-9697
PU Elsevier BV
VL 798
UT 000701750700003
DI 10.1016/j.scitotenv.2021.149149
ID 82120
ER

EF