FN Archimer Export Format
PT J
TI Integrative taxonomy revisits the ontogeny and trophic niches of   Rimicaris   vent shrimps
BT 
AF Methou, Pierre
   Michel, Loic
   Segonzac, Michel
   Cambon-Bonavita, Marie-Anne
   Pradillon, Florence
AS 1:1,2;2:2;3:3;4:1;5:2;
FF 1:PDG-REM-EEP-LMEE;2:PDG-REM-EEP-LEP;3:;4:PDG-REM-EEP-LMEE;5:PDG-REM-EEP-LEP;
C1 Ifremer, Univ Brest, CNRS, Laboratoire de Microbiologie des Environnements Extrêmes, UMR 6197, F-29280 Plouzané, France
   Ifremer, Centre Brest, Laboratoire Environnement Profond (REM/EEP/LEP), ZI de la pointe du Diable, F-29280 Plouzané, France
   Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, case postale 53, 57 rue Cuvier, F-75231 Paris cedex 05, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   MNHN, FRANCE
SI BREST
SE PDG-REM-EEP-LMEE
   PDG-REM-EEP-LEP
UM BEEP-LM2E
IN WOS Ifremer UPR
   WOS Ifremer UMR
   DOAJ
   copubli-france
IF 2.963
TC 17
UR https://archimer.ifremer.fr/doc/00640/75227/75368.pdf
   https://archimer.ifremer.fr/doc/00640/75227/75369.pdf
   https://archimer.ifremer.fr/doc/00640/75227/75370.pdf
LA English
DT Article
CR BICOSE 2
   HERMINE
BO Pourquoi pas ?
DE ;hydrothermal vents;stable isotopes;taxonomy;crustaceans;life history;trophic shift
AB Among hydrothermal vent species, Rimicaris exoculata is one of the most emblematic, hosting abundant and diverse ectosymbioses that provide most of its nutrition. Rimicaris exoculata co-occurs in dense aggregates with the much less abundant Rimicaris chacei in many Mid-Atlantic Ridge vent fields. This second shrimp also houses ectosymbiotic microorganisms but has a mixotrophic diet. Recent observations have suggested potential misidentifications between these species at their juvenile stages, which could have led to misinterpretations of their early-life ecology. Here, we confirm erroneous identification of the earliest stages and propose a new set of morphological characters unambiguously identifying juveniles of each species. On the basis of this reassessment, combined use of C, N and S stable isotope ratios reveals distinct ontogenic trophic niche shifts in both species, from photosynthesis-based nutrition before settlement, towards a chemosynthetic diet afterwards. Furthermore, isotopic compositions in the earliest juvenile stages suggest differences in larval histories. Each species thus exhibits specific early-life strategies that would, without our re-examination, have been interpreted as ontogenetic variations. Overall, our results provide a good illustration of the identification issues persisting in deep-sea ecosystems and the importance of integrative taxonomy in providing an accurate view of fundamental aspects of the biology and ecology of species inhabiting these environments. 
PY 2020
PD JUN
SO Royal Society Open Science
SN 2054-5703
PU The Royal Society
VL 7
IS 7
UT 000549828800001
DI 10.1098/rsos.200837
ID 75227
ER

EF