FN Archimer Export Format
PT J
TI Chemical contaminants (trace metals, persistent organic pollutants) in albacore tuna from western Indian and south-eastern Atlantic Oceans: Trophic influence and potential as tracers of populations
BT 
AF CHOUVELON, Tiphaine
   BRACH-PAPA, Christophe
   AUGER, Dominique
   BODIN, Nathalie
   BRUZAC, Sandrine
   CROCHET, Sylvette
   DEGROOTE, Maxime
   HOLLANDA, Stephanie J.
   HUBERT, Clarisse
   KNOERY, Joel
   MUNSCHY, Catherine
   PUECH, Alexis
   ROZUEL, Emmanuelle
   THOMAS, Bastien
   WEST, Wendy
   BOURJEA, Jerome
   NIKOLIC, Natacha
AS 1:1;2:1,2;3:1;4:3;5:1;6:1;7:3;8:4;9:1;10:1;11:5;12:6;13:1;14:1;15:7;16:8;17:6,9;
FF 1:PDG-RBE-BE-LBCM;2:PDG-ODE-LITTORAL-LERPAC;3:PDG-RBE-BE-LBCM;4:;5:PDG-RBE-BE-LBCM;6:PDG-RBE-BE-LBCM;7:;8:;9:PDG-RBE-LEADNC;10:PDG-RBE-BE-LBCM;11:PDG-RBE-BE-LBCO;12:PDG-RBE-DOI;13:PDG-RBE-BE-LBCM;14:PDG-RBE-BE-LBCM;15:;16:PDG-RBE-MARBEC-LHM;17:PDG-RBE-DOI;
C1 IFREMER, Unite Biogeochim & Ecotoxicol BE, LBCM, Rue Ile Yeu,BP 21105, F-44311 Nantes 03, France.
   IFREMER, Unite Littoral, LER PAC, Zone portuaire Bregaillon, BP 330, F-83507 La Seyne Sur Mer, France.
   IRD, UMR MARine Biodivers Exploitat & Conservat MARBEC, Victoria, Seychelles.
   SFA, Victoria, Mahe, Seychelles.
   IFREMER, Unite Biogeochim & Ecotoxicol BE, LBCO, Rue Ile Yeu,Bp 21105, F-44311 Nantes 03, France.
   IFREMER, DOI, Rue Jean Bertho,BP 60, F-97822 La Port, La Reunion, France.
   Dept Agr Forestry & Fisheries, Private Bag X2, ZA-8012 Cape Town, South Africa.
   IFREMER, UMR MARine Biodivers Exploitat & Conservat MARBEC, Ave Jean Monnet,BP 171, F-34203 Sete, France.
   ARBRE, F-97460 St Paul, La Reunion, France.
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   IRD, SEYCHELLES
   SEYCHELLES FISHING AUTHOR, SEYCHELLES
   IFREMER, FRANCE
   IFREMER, FRANCE
   DAFF, SOUTH AFRICA
   IFREMER, FRANCE
   ARBRE, FRANCE
SI NANTES
   TOULON
   SAINT VINCENT
   LA REUNION
   SETE
SE PDG-RBE-BE-LBCM
   PDG-ODE-LITTORAL-LERPAC
   PDG-RBE-LEADNC
   PDG-RBE-BE-LBCO
   PDG-RBE-DOI
   PDG-RBE-MARBEC-LHM
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-int-hors-europe
   copubli-sud
IF 4.61
TC 43
UR https://archimer.ifremer.fr/doc/00384/49532/51152.pdf
LA English
DT Article
DE ;Top predator;Bioaccumulation;Inorganic elements;Organic contaminants;Stable isotopes;Intrinsic markers
AB Albacore tuna (Thunnus alalunga) is a highly commercial fish species harvested in the world's Oceans. Identifying the potential links between populations is one of the key tools that can improve the current management across fisheries areas. In addition to characterising populations' contamination state, chemical compounds can help refine foraging areas, individual flows and populations' structure, especially when combined with other intrinsic biogeochemical (trophic) markers such as carbon and nitrogen stable isotopes. This study investigated the bioaccumulation of seven selected trace metals – chromium, nickel, copper (Cu), zinc (Zn), cadmium (Cd), mercury (Hg) and lead – in the muscle of 443 albacore tunas, collected over two seasons and/or years in the western Indian Ocean (WIO: Reunion Island and Seychelles) and in the south-eastern Atlantic Ocean (SEAO: South Africa). The main factor that explained metal concentration variability was the geographic origin of fish, rather than the size and the sex of individuals, or the season/year of sampling. The elements Cu, Zn, Cd and Hg indicated a segregation of the geographic groups most clearly. For similar sized-individuals, tunas from SEAO had significantly higher concentrations in Cu, Zn and Cd, but lower Hg concentrations than those from WIO. Information inferred from the analysis of trophic markers (δ13C, δ15N) and selected persistent organic pollutants, as well as information on stomach contents, corroborated the geographical differences obtained by trace metals. It also highlighted the influence of trophic ecology on metal bioaccumulation. Finally, this study evidenced the potential of metals and chemical contaminants in general as tracers, by segregating groups of individuals using different food webs or habitats, to better understand spatial connectivity at the population scale. Limited flows of individuals between the SEAO and the WIO are suggested. Albacore as predatory fish also provided some information on environmental and food web chemical contamination in the different study areas. 
PY 2017
PD OCT
SO Science Of The Total Environment
SN 0048-9697
PU Elsevier Science Bv
VL 596-597
UT 000401557600048
BP 481
EP 495
DI 10.1016/j.scitotenv.2017.04.048
ID 49532
ER

EF