PMID- 33181997
OWN - NLM
STAT- MEDLINE
DCOM- 20201116
LR  - 20201116
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 751
DP  - 2021 Jan 10
TI  - Legacy and emerging organic contaminants in two sympatric shark species from 
      Reunion Island (Southwest Indian Ocean): Levels, profiles and maternal transfer.
PG  - 141807
LID - S0048-9697(20)35336-5 [pii]
LID - 10.1016/j.scitotenv.2020.141807 [doi]
AB  - The contamination of tiger sharks (Galeocerdo cuvier) and bull sharks 
      (Carcharhinus leucas) by legacy persistent organic pollutants (POPs) and emerging 
      organic contaminants was investigated in specimens from Reunion Island (Southwest 
      Indian Ocean) in 2018 and 2019. Contamination levels were determined in the 
      muscle of adult individuals of both sexes in relation to biological and trophic 
      parameters. Maternal transfer was additionally investigated in one set of embryos 
      in each species. Polychlorinated biphenyl (PCB), organochlorinated pesticide 
      (OCP) and perfluoroalkylated substance (PFAS) concentrations were 2597 +/- 2969, 
      785 +/- 966 and 267 +/- 194 pg g-1 ww, respectively, in bull sharks, and 339 +/- 270, 
      1025 +/- 946 and 144 +/- 53 pg g-1 ww in tiger sharks. The results highlighted higher 
      PCB contamination, and by the heavier congeners, in adult bull sharks versus 
      tiger sharks. The significant differences found in PCB profiles and 
      concentrations suggest that the two species are exposed to different 
      contamination sources. As bull sharks rely on a more coastal habitat for feeding, 
      their higher contamination by PCBs suggests the occurrence of local PCB sources. 
      DDT concentrations were similar in both species, suggesting a more homogeneous 
      contamination on the scale of the Southwest Indian Ocean. Female bull sharks 
      showed lower OCP and PCB concentrations than males, while this trend was not 
      observed in tiger sharks. The ratio of chlorinated contaminants in muscle between 
      the mother and her embryos was related to molecule hydrophobicity in bull shark 
      but not in tiger shark, suggesting that shark mode of gestation, known to be 
      different in the two species, is a key driver of organic contaminant maternal 
      transfer. Finally, the results show that organic contaminant levels in the 
      studied species were lower than those of other shark species in the Southern 
      Hemisphere, related to the limited urbanization and industrialization of Reunion 
      Island.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Chynel, M
AU  - Chynel M
AD  - IFREMER (French Research Institute for Exploitation of the Sea), Laboratory of 
      Biogeochemistry of Organic Contaminants, Rue de l'Ile d'Yeu, BP 21105, 44311 
      Nantes Cedex 3, France.
FAU - Munschy, C
AU  - Munschy C
AD  - IFREMER (French Research Institute for Exploitation of the Sea), Laboratory of 
      Biogeochemistry of Organic Contaminants, Rue de l'Ile d'Yeu, BP 21105, 44311 
      Nantes Cedex 3, France. Electronic address: cmunschy@ifremer.fr.
FAU - Bely, N
AU  - Bely N
AD  - IFREMER (French Research Institute for Exploitation of the Sea), Laboratory of 
      Biogeochemistry of Organic Contaminants, Rue de l'Ile d'Yeu, BP 21105, 44311 
      Nantes Cedex 3, France.
FAU - Heas-Moisan, K
AU  - Heas-Moisan K
AD  - IFREMER (French Research Institute for Exploitation of the Sea), Laboratory of 
      Biogeochemistry of Organic Contaminants, Rue de l'Ile d'Yeu, BP 21105, 44311 
      Nantes Cedex 3, France.
FAU - Pollono, C
AU  - Pollono C
AD  - IFREMER (French Research Institute for Exploitation of the Sea), Laboratory of 
      Biogeochemistry of Organic Contaminants, Rue de l'Ile d'Yeu, BP 21105, 44311 
      Nantes Cedex 3, France.
FAU - Jaquemet, S
AU  - Jaquemet S
AD  - Universite de La Reunion, UMR 9220 ENTROPIE (Universite de La Reunion-CNRS-IRD), 
      Avenue Rene Cassin CS 92003, 97744 Saint-Denis Cedex 9, Ile de La Reunion, 
      France.
LA  - eng
PT  - Journal Article
DEP - 20200820
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Animals
MH  - Female
MH  - Humans
MH  - Indian Ocean
MH  - Male
MH  - *Polychlorinated Biphenyls/analysis
MH  - Reunion
MH  - Seafood
MH  - *Sharks
OTO - NOTNLM
OT  - Bull shark
OT  - Organochlorine pesticides (OCPs)
OT  - Perfluoroalkylated substances (PFASs)
OT  - Persistent organic pollutants (POPs)
OT  - Polychlorinated biphenyls (PCBs)
OT  - Tiger shark
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/11/14 06:00
MHDA- 2020/11/18 06:00
CRDT- 2020/11/13 01:01
PHST- 2020/07/02 00:00 [received]
PHST- 2020/08/09 00:00 [revised]
PHST- 2020/08/17 00:00 [accepted]
PHST- 2020/11/13 01:01 [entrez]
PHST- 2020/11/14 06:00 [pubmed]
PHST- 2020/11/18 06:00 [medline]
AID - S0048-9697(20)35336-5 [pii]
AID - 10.1016/j.scitotenv.2020.141807 [doi]
PST - ppublish
SO  - Sci Total Environ. 2021 Jan 10;751:141807. doi: 10.1016/j.scitotenv.2020.141807. 
      Epub 2020 Aug 20.