TY - JOUR
T1 - Bioaccumulation of Polycyclic Aromatic Hydrocarbons (PAHs) by the Marine Clam, Mactra veneriformis, Chronically Exposed to Oil-Suspended Particulate Matter Aggregates
AU - Noh, Junsung
AU - Kim, Hosang
AU - Lee, Changkeun
AU - Yoon, Seo Joon
AU - Chu, Seungoh
AU - Kwon, Bong Oh
AU - Ryu, Jongseong
AU - Kim, Jae Jin
AU - Lee, Hanbyul
AU - Yim, Un Hyuk
AU - Giesy, John P.
AU - Khim, Jong Seong
N1 - Funding Information:
This work was supported by projects entitled “Marine ecosystem-based analysis and decision-making support system development for marine spatial planning (20170325)” and “Integrated management of marine environment and ecosystems around Saemangeum (20140257)” funded by the Ministry of Oceans and Fisheries of Korea (MOF) granted to J.S.K. This work was also partly supported by project entitled "Quantification of self-purification capacity of coastal wetlands through understanding of chemodynamics of land-driven coastal pollutants (NRF-2017R1E1A1A01075067)" funded by the Ministry of Science and ICT. J.P.G. was supported by the Canada Research Chair program, the 2012 “High Level Foreign Experts” (#GDT20143200016) program, funded by the State Administration of Foreign Experts Affairs, the P.R. China to Nanjing University, the Einstein Professor Program of the Chinese Academy of Sciences and a Distinguished Visiting Professorship in the School of Biological Sciences of the University of Hong Kong. Finally, we thank Ms. Ji Hyun Kim for the technical assistance for the part of experiments.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/7/17
Y1 - 2018/7/17
N2 - Dispersion and biodegradation of petroleum hydrocarbons are significantly enhanced by formation of oil-suspended particulate matter aggregates (OSAs), but little is known about their adverse effects on benthic invertebrates or microbes. In this study, we investigated: (1) bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) by the marine bivalve, Mactra veneriformis and (2) changes in composition and relative abundances of microbes, during 50-d of an OSAs feeding experiment. Total concentrations of PAHs increased more rapidly during the first week of exposure, peaked at Day 30, then gradually declined to the end of experiment. While bioaccumulation of PAHs by clams varied among the 20 target compounds, two major groups of PAHs were identified by cluster analysis. One group including 3-methylphenanthrene, 1,6-dimethylphenanthrene, 1,2,6,9-tetramethylphenanthrene, and benzo[a]anthracene showed a fairly constant rate of accumulation, while the second group including 2-methyldibenzothiophene, 2,4-dimethyldibenzothiophene, 2,4,7-trimethyldibenzothiophene, 3-methylchrysene, 6-ethylchrysene, and 1,3,6-trimethylchrysene exhibited a bell-shaped pattern. Bioaccumulation of PAHs by clams was dependent on changes in abundance of Gammaproteobacteria, indicating active degradations of hydrocarbons by selected species. Six key species included: Porticoccus litoralis, Porticoccus hydrocarbonoclasticus, Cycloclasticus spirillensus, Alcanivorax borkumensis, Alcanivorax dieselolei, and Alkalimarinus sediminis. These results are the first to demonstrate interactions of OSAs and macrofauna/microbe in oil cleanup operations.
AB - Dispersion and biodegradation of petroleum hydrocarbons are significantly enhanced by formation of oil-suspended particulate matter aggregates (OSAs), but little is known about their adverse effects on benthic invertebrates or microbes. In this study, we investigated: (1) bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) by the marine bivalve, Mactra veneriformis and (2) changes in composition and relative abundances of microbes, during 50-d of an OSAs feeding experiment. Total concentrations of PAHs increased more rapidly during the first week of exposure, peaked at Day 30, then gradually declined to the end of experiment. While bioaccumulation of PAHs by clams varied among the 20 target compounds, two major groups of PAHs were identified by cluster analysis. One group including 3-methylphenanthrene, 1,6-dimethylphenanthrene, 1,2,6,9-tetramethylphenanthrene, and benzo[a]anthracene showed a fairly constant rate of accumulation, while the second group including 2-methyldibenzothiophene, 2,4-dimethyldibenzothiophene, 2,4,7-trimethyldibenzothiophene, 3-methylchrysene, 6-ethylchrysene, and 1,3,6-trimethylchrysene exhibited a bell-shaped pattern. Bioaccumulation of PAHs by clams was dependent on changes in abundance of Gammaproteobacteria, indicating active degradations of hydrocarbons by selected species. Six key species included: Porticoccus litoralis, Porticoccus hydrocarbonoclasticus, Cycloclasticus spirillensus, Alcanivorax borkumensis, Alcanivorax dieselolei, and Alkalimarinus sediminis. These results are the first to demonstrate interactions of OSAs and macrofauna/microbe in oil cleanup operations.
UR - http://www.scopus.com/inward/record.url?scp=85048680716&partnerID=8YFLogxK
U2 - 10.1021/acs.est.7b06692
DO - 10.1021/acs.est.7b06692
M3 - Article
C2 - 29898595
AN - SCOPUS:85048680716
SN - 0013-936X
VL - 52
SP - 7910
EP - 7920
JO - Environmental Science and Technology
JF - Environmental Science and Technology
IS - 14
ER -
