FN Archimer Export Format
PT J
TI A step towards measuring connectivity in the deep-sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites
BT 
AF Mouchi, Vincent
   Pecheyran, Christophe
   Claverie, Fanny
   Cathalot, Cecile
   Matabos, Marjolaine
   Germain, Yoan
   Rouxel, Olivier
   Jollivet, Didier
   Broquet, Thomas
   Comtet, Thierry
AS 1:1;2:2;3:2;4:3;5:4;6:3;7:3;8:1;9:1;10:1;
FF 1:;2:;3:;4:PDG-REM-GEOOCEAN-CYBER;5:PDG-REM-BEEP-LEP;6:PDG-REM-GEOOCEAN-CYBER;7:PDG-REM-GEOOCEAN;8:;9:;10:;
C1 Sorbonne Universite, CNRS, Adaptation et Diversité en Milieu Marin, AD2M, Station Biologique de Roscoff, F-29680, Roscoff, France
   Universite de Pau et des Pays de l’Adour, E2S UPPA, CNRS, IPREM, Avenue de l'Université, BP 576 64012 PAU cedex, France
   Geo-Ocean, Univ Brest, CNRS, IFREMER, UMR6539, F-29280 Plouzané, France
   IFREMER REM-EEP, Technopôle Brest Plouzané, 29280 Plouzané, France
C2 UNIV SORBONNE, FRANCE
   UNIV PAU & PAYS ADOUR, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GEOOCEAN-CYBER
   PDG-REM-BEEP-LEP
   PDG-REM-GEOOCEAN
UM BEEP-LM2E
   GEO-OCEAN
TC 0
UR https://archimer.ifremer.fr/doc/00838/94995/102601.pdf
   https://archimer.ifremer.fr/doc/00838/94995/102602.pdf
   https://archimer.ifremer.fr/doc/00838/94995/107826.pdf
   https://archimer.ifremer.fr/doc/00838/94995/107827.pdf
LA English
DT Article
CR CHUBACARC
BO L'Atalante
AB Deep-sea hydrothermal-vent systems are under investigation for base and precious metal exploitations. The impact of mining will depend critically on the ability of larval dispersal to connect and replenish endemic populations. However, assessing connectivity is extremely challenging, especially in the deep sea. Here, we investigate the potential of elemental fingerprinting of mollusc larval shells to discriminate larval origins between multiple hydrothermal sites in the Southwest Pacific Ocean. The gastropodShinkailepas tollmannirepresents a suitable candidate as it uses capsules to hold larvae before dispersal, which facilitates sampling. Multielemental microchemistry was performed using cutting-edge femtosecond laser ablation Inductively Coupled Plasma Mass Spectrometry analysis to obtain individual measurements on 600 encapsulated larval shells. We used classification methods to discriminate the origin of individuals from 14 hydrothermal sites spanning over 3,500 km, with an overall success rate of 70%. When considering less sites within more restricted areas, reflecting dispersal distances reported by genetic and modelling approaches, the success rate increased up to 86%. We conclude that individual larval shells register site-specific elemental signatures that can be used to assess their origin. These results open new perspectives to get direct estimates on population connectivity from the geochemistry of pre-dispersal shell of recently settled juveniles. 
PY 2024
SO Biogeosciences
SN 1726-4189
PU European Geosciences Union
VL 21
IS 1
BP 145
EP 160
DI 10.5194/bg-21-145-2024
ID 94995
ER

EF