FN Archimer Export Format
PT J
TI Interactions between Crassostrea virginica larvae and Deepwater Horizon oil: Toxic effects via dietary exposure
BT 
AF VIGNIER, J.
   ROLTON, A.
   SOUDANT, Philippe
   CHU, F. L. E.
   ROBERT, Rene
   VOLETY, A. K.
AS 1:1,2;2:1,2;3:2;4:3;5:4;6:1,5;
FF 1:;2:;3:;4:;5:PDG-ODE-LITTORAL;6:;
C1 Florida Gulf Coast Univ, Dept Marine & Ecol Sci, Coll Arts & Sci, Ft Myers, FL 33965 USA.
   IUEM UBO, Lab Sci Environm Marin, UMR LEMAR 6539, Technopole Brest Iroise, F-29280 Plouzane, France.
   VIMS, Dept Aquat Hlth Sci, Coll William & Mary, Gloucester Point, VA 23062 USA.
   Ifremer, Unite Littoral, Ctr Bretagne, ZI Pointe Diable, CS 10070, F-29280 Plouzane, France.
   Univ N Carolina, Coll Arts & Sci, 601 South Coll Rd, Wilmington, NC 28403 USA.
C2 UNIV FLORIDA GULF COAST, USA
   CNRS, FRANCE
   VIRGINIA INST MARINE SCI, USA
   IFREMER, FRANCE
   UNIV N CAROLINA, USA
SI BREST
SE PDG-ODE-LITTORAL
UM LEMAR
IN WOS Ifremer UPR
   WOS Cotutelle UMR
   copubli-france
   copubli-int-hors-europe
IF 6.792
TC 5
UR https://archimer.ifremer.fr/doc/00473/58423/61445.pdf
LA English
DT Article
DE ;Deepwater Horizon oil;Droplet;Oyster larvae;Dietary exposure;PAH
AB The Deepwater Horizon (DWH) disaster released crude oil in the Gulf of Mexico for 87 days, overlapping with the reproductive season and recruitment of the oyster Crassostrea virginica. The pelagic larval life stages of C. virginica are particularly vulnerable to contaminants such as polycyclic aromatic hydrocarbons (PAHs) and oil droplets. Based on their lipophilic properties, PAHs and oil droplets can adsorb onto phytoplankton and filter-feeding C. virginica larvae may be exposed to these contaminants bound to suspended sediment, adsorbed onto algal and other particles, or in solution. This study examined the effects of exposure of C. virginica larvae to algae mixed with DWH oil. In a 14-day laboratory exposure, 5 day-old C. virginica larvae were exposed to Tisochrysis lutea mixed with four concentrations of unfiltered DWH oil (HEWAF) in a static renewal system. Larval growth, feeding capacity, abnormality and mortality were monitored throughout the exposure. Total PAH (n = 50) content of the water medium, in which larvae were grown, were quantified by GC/MS-SIM. Oil droplets were observed bound to algae, resulting in particles in the size-range of food ingested by oyster larvae (1–30 μm). After 14 days of exposure, larval growth and survival were negatively affected at concentrations of tPAH50 as low as 1.6 μg L−1. GC/MS-SIM analysis of the exposure medium confirmed that certain PAHs were also adsorbed by T. lutea and taken up by oyster larvae via ingestion of oil droplets and/or contaminated algae. Long-term exposure to chronic levels of PAH (1.6–78 μg tPAH50 L−1) was shown to negatively affect larval survival. This study demonstrates that dietary exposure of oyster larvae to DWH oil is a realistic route of crude oil toxicity and may have serious implications on the planktonic community and the food chain. 
PY 2019
PD MAR
SO Environmental Pollution
SN 0269-7491
PU Elsevier Sci Ltd
VL 246
UT 000458222100062
BP 544
EP 551
DI 10.1016/j.envpol.2018.12.057
ID 58423
ER

EF