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Bioaccumulation of endocrine disrupting compounds in fish with different feeding habits along the largest subtropical river, China. | LitMetric

Bioaccumulation of endocrine disrupting compounds in fish with different feeding habits along the largest subtropical river, China.

Environ Pollut

Research Center of Hydrobiology, Department of Ecology, Jinan University, Guangzhou, 510632, China; Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education Engineering, Jinan University, Guangzhou, 510632, China. Electronic address:

Published: April 2019

AI Article Synopsis

  • Endocrine disrupting compounds (EDCs) such as 4-Nonylphenol (4-NP), bisphenol A (BPA), and triclosan (TCS) were studied in fish and their environments along the Pearl River in China to understand their bioaccumulation in relation to regional pollution and fish feeding habits.
  • * The study found significant spatial variations in EDC levels across different sites, with 4-NP being the most dominant compound found in fish, especially in carnivorous species, indicating that higher levels of EDCs can accumulate in higher trophic levels of food chains.
  • * Furthermore, certain fish with detritivorous and planktivorous diets may serve as effective bioind

Article Abstract

Endocrine disrupting compounds (EDCs) are becoming an increasing concern regarding bioaccumulation in aquatic biota. However, the effects of regional pollution levels and specific feeding habits on the bioaccumulation of EDCs in fish are rarely reported. 4-Nonylphenol (4-NP), bisphenol A (BPA), 4-tert-octylphenol (4-t-OP), triclocarban (TCC) and triclosan (TCS) were determined in abiotic compartments [water, sediment, suspended particulate matter (SPM)] and fish with different feeding habits along the Pearl River, China. EDCs in abiotic compartments exhibited significant (p < 0.05) spatial variations, forming five zones clustered based on site-specific EDC concentrations. 4-NP was the dominant compound, contributing 58-98% of the EDCs in fish, followed by BPA (<41%), 4-t-OP (<13%), and TCC and TCS (<4.7%). The concentrations of 4-NP and 4-t-OP, BPA, and TCC and TCS were the highest in brackish carnivorous, planktivorous, and detritivorous fish, respectively. The bioaccumulation factors (BAFs) showed that 4-NP accumulated (BAF > 5000) in all fish except for suck-feeding detritivores, while 4-t-OP and TCC accumulated in filter-feeding planktivores. The concentration of 4-NP in carnivores was significantly higher than that in detritivores, indicating the potential biomagnification of 4-NP along food chains. EDCs in sediment and SPM and those in water were most positively correlated with those in detritivores and planktivores, respectively, suggesting the potential of fish with these two feeding habits to act as bioindicators of EDC pollutants.

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Source
http://dx.doi.org/10.1016/j.envpol.2019.01.113DOI Listing

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