PMID- 33540163 OWN - NLM STAT- MEDLINE DCOM- 20210318 LR - 20210318 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 771 DP - 2021 Jun 1 TI - Persistent organic pollutants in sea bird eggs from the Indian Ocean's Mascarene Basin. PG - 145348 LID - S0048-9697(21)00415-0 [pii] LID - 10.1016/j.scitotenv.2021.145348 [doi] AB - We report the concentrations of persistent organic pollutants (POPs) in seabird eggs from St. Brandon's Atoll, a tropical island system in the western Indian Ocean. Ten eggs each of sooty terns (Onychoprion fuscatus), fairy terns (Gygis alba), and common noddies (Anous stolidus) were collected from the atoll. For a terrestrial reference, we analysed three feral chicken (Gallus gallus domesticus) eggs from the same location. Sooty tern eggs contained the highest mean concentrations of three chemical classes: ƩCHL(3) (0.21 ng/g wm; wet mass), ƩPCB(10) (1.5 ng/g wm), and ƩPBDE(6) (1.1 ng/g wm). Fairy tern eggs contained the highest mean concentrations of HCB (0.68 ng/g wm) and ƩCHB(5) (0.83 ng/g wm). The chicken eggs contained the highest mean concentrations of ƩDDT(3) (2.6 ng/g wm), while common noddy eggs contained the highest mean concentrations of ƩHCH(2) (0.5 ng/g wm). We surmise that the differences in chemical composition between species reflect different pollutant compositions in prey from the bird's different foraging ranges. The sooty terns foraging offshore contained higher POPs concentrations than the nearshore-foraging common noddies. Fairy tern eggs contained intermediate concentrations, commensurate with their intermediate foraging. Inter-island differences in contaminant concentrations were seen between eggs of the common noddies from St. Brandon's Atoll and Rodrigues Island, 520 km to the south-east. Concentrations of contaminants found in this study were lower than values quantified by other studies, making St. Brandon's Atoll an ideal reference site to monitor background concentrations of POPs in the tropical Indian Ocean. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - van der Schyff, Veronica AU - van der Schyff V AD - Research Unit, Environmental Sciences and Management, North-West University, Potchefstroom, South Africa. Electronic address: veronica.vanderschyff@yahoo.com. FAU - Kwet Yive, Nee Sun Choong AU - Kwet Yive NSC AD - Department of Chemistry, University of Mauritius, Mauritius. FAU - Polder, Anuschka AU - Polder A AD - Research Unit, Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), 0033 Oslo, Norway. FAU - Cole, Nik C AU - Cole NC AD - Research Unit, Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; Durrell Wildlife Conservation Trust, Les Augres Manor, Trinity, Jersey Channel Islands, UK; Mauritian Wildlife Foundation, Grannum Road, Vacoas, Mauritius. FAU - Tatayah, Vikash AU - Tatayah V AD - Mauritian Wildlife Foundation, Grannum Road, Vacoas, Mauritius. FAU - Kylin, Henrik AU - Kylin H AD - Research Unit, Environmental Sciences and Management, North-West University, Potchefstroom, South Africa; Department of Water and Environmental Studies, Linkoping University, Linkoping, Sweden. FAU - Bouwman, Hindrik AU - Bouwman H AD - Research Unit, Environmental Sciences and Management, North-West University, Potchefstroom, South Africa. LA - eng PT - Journal Article DEP - 20210122 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Environmental Pollutants) SB - IM MH - Animals MH - Birds MH - Environmental Monitoring MH - *Environmental Pollutants/analysis MH - Indian Ocean MH - Islands MH - *Persistent Organic Pollutants OTO - NOTNLM OT - Biomonitoring OT - DDT OT - Mauritius OT - PBDE OT - PCB OT - Seabird eggs 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- 2021/02/05 06:00 MHDA- 2021/03/19 06:00 CRDT- 2021/02/04 20:14 PHST- 2020/06/15 00:00 [received] PHST- 2021/01/07 00:00 [revised] PHST- 2021/01/17 00:00 [accepted] PHST- 2021/02/05 06:00 [pubmed] PHST- 2021/03/19 06:00 [medline] PHST- 2021/02/04 20:14 [entrez] AID - S0048-9697(21)00415-0 [pii] AID - 10.1016/j.scitotenv.2021.145348 [doi] PST - ppublish SO - Sci Total Environ. 2021 Jun 1;771:145348. doi: 10.1016/j.scitotenv.2021.145348. Epub 2021 Jan 22.