Occurrence of triclosan in plasma of wild Atlantic bottlenose dolphins (Tursiops truncatus) and in their environment |
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| Authors: | Patricia A Fair Hing-Biu Lee Jeff Adams Colin Darling Grazina Pacepavicius Mehran Alaee Gregory D Bossart Natasha Henry Derek Muir |
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| Institution: | 1. Hydrosciences Montpellier UMR 5569, Dept. Environmental Sciences and Public Health, University of Montpellier I, 34000 Montpellier, France;2. Laboratory of Cima, University of Algarve, Campus de Gambelas, 8000-397 Faro, Portugal;1. INRS-Institut Armand-Frappier, Edifice 18, 531 blvd. des Prairies, Laval (QC) H7V 1B7, Canada;2. Department of Pathobiology and Veterinary Science, University of Connecticut, 61 North Eagleville Road, U-3089, Storrs, CT 06269, USA;1. Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University, PO. Box 80207, Jeddah 21589, Saudi Arabia;2. Faculty of Veterinary Medicine, Department of Food safety and Infection Biology (MatInf), Norwegian University of Life Sciences (NMBU), PO Box 8146 Dep, N-0033 Oslo, Norway;3. Department of Chemistry, University of Bergen, P.O. Box 7803, N-5020 Bergen, Norway;4. Faculty of Veterinary Medicine and Biosciences, Norwegian University of Life Sciences (NMBU), Christian M. Falsen veg 1, NO-1432, ÅS, Norway |
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| Abstract: | The presence of triclosan, a widely-used antibacterial chemical, is currently unknown in higher trophic-level species such as marine mammals. Blood plasma collected from wild bottlenose dolphins (Tursiops truncatus) in Charleston, SC (CHS) (n = 13) and Indian River Lagoon, FL (IRL) (n = 13) in 2005 was analyzed for triclosan. Plasma concentrations in CHS dolphins ranged from 0.12 to 0.27 ng/g wet weight (mean 0.18 ng/g), with 31% of the sampled individuals having detectable triclosan. The mean IRL dolphin plasma concentrations were 0.072 ng/g wet weight (range 0.025–0.11 ng/g); 23% of the samples having detectable triclosan. In the CHS area, triclosan effluent values from two WWTP were both 190 ng/L and primary influents were 2800 ng/L and 3400 ng/L. Triclosan values in CHS estuarine surface water samples averaged 7.5 ng/L (n = 18) ranging from 4.9 to 14 ng/L. This is the first study to report bioaccumulation of anthropogenic triclosan in a marine mammal highlighting the need for further monitoring and assessment. |
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