Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 127, Issue -, Pages 155-162Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2017.03.006
Keywords
Urban ecosystems; Bioaccumulation factor; Bioconcentration; Effluent; Striped mullet; Urbanization; Estuaries and coasts
Funding
- National Sea Grant Office, National Oceanic and Atmospheric Administration, US Department of Commerce [NA10OAR4170099]
- Fulbright Canada Visiting Research Chair in Water and the Environment at the University of Lethbridge
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Though bioaccumulation of pharmaceuticals has received attention in inland waters, studies of pharmaceutical bioaccumulation in estuarine and marine systems are limited. Further, an understanding of pharmaceutical bioaccumulation across size classes of organisms displaying ontogenetic feeding shifts is lacking. We selected the striped mullet, Mugil cephalus, a euryhaline and eurythermal species that experiences dietary shifts with age, to identify whether a model base, diphenhydramine, accumulated in a tidally influenced urban bayou. We further determined whether diphenhydramine accumulation differed among size classes of striped mullet over a two year study period. Stable isotope analysis identified that ontogenetic feeding shifts of M. cephalus occurred from juveniles to adults. However, bioaccumulation of diphenhydramine did not significantly increase across age classes of M. cephalus but corresponded to surface water levels of the pharmaceutical, which suggests inhalational uptake to diphenhydramine was more important for bioaccumulation than dietary exposure in this urban estuary. (C) 2017 Elsevier Ltd. All rights reserved.
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