Trophodynamics and parabolic behaviors of polycyclic aromatic hydrocarbons in an urbanized lake food web, Shanghai

Abdul Qadeer; Min Liu; Jing Yang; Xinran Liu; Saira Khan Khalil; Yanping Huang; Md Habibullah-Al-Mamun; Dengzhou Gao; Yi Yang

doi:10.1016/j.ecoenv.2019.04.003

Trophodynamics and parabolic behaviors of polycyclic aromatic hydrocarbons in an urbanized lake food web, Shanghai

Ecotoxicol Environ Saf. 2019 Aug 30:178:17-24. doi: 10.1016/j.ecoenv.2019.04.003. Epub 2019 Apr 12.

Authors

Abdul Qadeer¹, Min Liu², Jing Yang³, Xinran Liu³, Saira Khan Khalil³, Yanping Huang¹, Md Habibullah-Al-Mamun⁴, Dengzhou Gao³, Yi Yang³

Affiliations

¹ Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographical Sciences, East China Normal University, Shanghai, 200241, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai, 200062, China.
² Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographical Sciences, East China Normal University, Shanghai, 200241, China; Institute of Eco-Chongming (IEC), 3663 N. Zhongshan Rd., Shanghai, 200062, China. Electronic address: mliu@geo.ecnu.edu.cn.
³ Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographical Sciences, East China Normal University, Shanghai, 200241, China.
⁴ Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh.

PMID: 30986628
DOI: 10.1016/j.ecoenv.2019.04.003

Abstract

Understanding the trophic movement and trophic magnification factor (TMF) of polycyclic aromatic hydrocarbons (PAHs) is an important criterion to assess their fate and potential effects in an aquatic ecosystem. This study investigated concentrations and trophodynamics of 16 priority PAHs in food web_wb (food web comprising whole bodies) and food web_m (food web containing only muscles) of total 14 species ((including plankton, shrimp, whitebait, mussels, snails, red-eared terrapin and seven other fish species) from the Dianshan Lake. Values of δ¹³C and δ¹⁵N were determined to assign trophic levels to organisms. In general, there was no evidence of biomagnification because of biological degradation of PAHs compounds, but only 9 PAH compounds in food web_m showed a statistically significant negative relationship between trophic level and lipid normalized concentration compared to the 6 PAHs congeners in food web_wb. However, TMF values of PAHs in food web_m ranged from 0.32 for pyrene to 0.68 for phenanthrene compared to TMF values of food web_wb ranged from 0.34 for pyrene to 0.74 for fluorene. Because of two opposing scientific views for biomagnification and biodilution of PAHs in the food web, albeit based on a rather limited number of studies, our study investigated that there is parabolic behavior of most of the PAHs. Concentrations of PAHs in the red-eared terrapin (Trachemys scripta elegans) were biodiluted which showed that this species metabolises such compounds. There was no particular relationship between K_ow and TMFs of PAHs in the Dianshan Lake. Hepatobiliary system (such as gall bladder and liver) in the whole body considered to have higher bioaccumulation potential of organic compounds than extrahepatic tissue (muscles).

Keywords: Food web; PAHs; Tidal freshwater lake; Trophic magnification factors.

MeSH terms

Animals
Aquatic Organisms / growth & development*
China
Environmental Monitoring / methods*
Food Chain
Lakes / chemistry*
Polycyclic Aromatic Hydrocarbons / analysis*
Urbanization*
Water Pollutants, Chemical / analysis*

Substances

Polycyclic Aromatic Hydrocarbons
Water Pollutants, Chemical