Persistent halogenated compounds in fish from rivers in the Pearl River Delta, South China: Geographical pattern and implications for anthropogenic effects on the environment

Sun, Runxia; Luo, Xiao-Jun; Tang, Bin; Li, Zongrui; Wang, Tao; Lin, Tao; Mai, Bi-Xian

doi:10.1016/j.envres.2016.01.021

Cited by 46 publications

(14 citation statements)

References 36 publications

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“…The study of Mol et al [16] indicated that the transformation of rT3 to T2 was not observed in liver of catfish but was observed in liver of 3 other fish species, tilapia, trout, and turbot. In our previous studies [14,23], tilapia was found to have the same debromination metabolism for PBDEs as carp. On the other hand, the transformation of T4 to T3, mainly mediated by type 2 deiodinase, was observed in the livers of both catfish and 3 other fish species.…”

Section: Comparison Metabolism Of Pbdes In Crucian Carp and Catfishmentioning

confidence: 77%

“…The transformation of rT3 to T2 was mediated mainly by type 1 deiodinase [16]. In our previous studies [14,23], tilapia was found to have the same debromination metabolism for PBDEs as carp. In our previous studies [14,23], tilapia was found to have the same debromination metabolism for PBDEs as carp.…”

Section: Comparison Metabolism Of Pbdes In Crucian Carp and Catfishmentioning

confidence: 79%

“…Both in vivo exposure [12] and field investigations [13] found that cyprinid fish such as common carp, mud carp, and crucian carp can debrominate higher brominated congeners such as BDE 85,99,183,196,197,203,206,207,208, and 209 to form lower brominated congeners. However, no debromination was found in siluroid fish such as catfish and plecostomus [14]. To date, little information has been available on the reason for these species-specific differences in PBDE debromination.…”

Section: Introductionmentioning

confidence: 99%

“…For example, carp was found to metabolically debrominate BDE 99 to a larger extent than Chinook salmon, and the metabolic products differed between species (BDE 47 was formed in carp, but BDE 49 was found in salmon) [10,11]. However, no debromination was found in siluroid fish such as catfish and plecostomus [14]. However, no debromination was found in siluroid fish such as catfish and plecostomus [14].…”

Section: Introductionmentioning

confidence: 99%

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Species‐specific and structure‐dependent debromination of polybrominated diphenyl ether in fish by in vitro hepatic metabolism

Luo

Zeng

et al. 2017

Enviro Toxic and Chemistry

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To explore the cause of species-specific differences and structure-activity relationships in the debromination of polybrominated diphenyl ethers (PBDEs) in fish, a series of in vitro measurements of hepatic metabolism of PBDE were made using crucian carp (Carassius carassius) and catfish (Silurus asotus) and the activity of deiodinase in liver microsomes was measured. Debromination was observed in the crucian carp but not in the catfish. No difference was found in total deiodinase activity despite the activity of type 1 deiodinase in crucian carp being twice that of catfish. It is difficult to determine whether the differences in deiodinase activity were responsible for the species-specific differences observed. In crucian carp, penta-brominated diphenyl ether congeners exhibited the highest debromination rates, and the transformation rate decreased with an increasing number of substituted bromines. Adjacent bromine substitution in the phenyl ring was a necessary, but insufficient, condition for debromination in crucian carp. Doubly flanked bromine was always preferentially removed, while single-flanked bromine, meta-substituted bromine, was debrominated the most, followed by para- and then ortho-bromine. No debromination was observed for single-flanked bromine when there was a symmetrical structure with (2, 4, 6) bromine substitutions in 1 phenyl ring, indicating that this structure can improve resistance to debromination metabolism. Environ Toxicol Chem 2017;36:2005-2011. © 2017 SETAC.

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Section: Comparison Metabolism Of Pbdes In Crucian Carp and Catfishmentioning

confidence: 77%

Section: Comparison Metabolism Of Pbdes In Crucian Carp and Catfishmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Species‐specific and structure‐dependent debromination of polybrominated diphenyl ether in fish by in vitro hepatic metabolism

Luo

Zeng

et al. 2017

Enviro Toxic and Chemistry

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“…In context to Pakistan, the contribution of contamination from natural factors is negligible as compared to anthropogenic activities [5]. Among anthropogenic activities, agricultural runoff also significantly influences the water quality of the rivers [6,9]. Pakistan is an agrarian country whereby its rivers are considered to be the backbone of the country's agrobased economy [3].…”

mentioning

confidence: 99%

Evaluation of Surface Water Quality on Spatiotemporal Gradient Using Multivariate Statistical Techniques: A Case Study of River Chenab, Pakistan

Kausar¹,

Qadir²,

Ahmad³

et al. 2019

Pol. J. Environ. Stud.

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Rivers are essential for life as they serve creatures with ample freshwater supply. Although rivers represent merely 0.0001% of the planet's total water fraction, they carry water and nutrients to the biosphere [1]. In recent years, one of the greatest environmental concerns for developing countries is associated with the deterioration of riverine water quality for the reason that the rivers are considered to be an easy dumping ground for wastewater in developing countries [2]. At the same

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Occurrence and Species‐Specific Distribution of Plastic Debris in Wild Freshwater Fish from the Pearl River Catchment, China

Zheng

Fan

Zhu

et al. 2019

Enviro Toxic and Chemistry

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Freshwater systems are an important source and vector of plastic debris found in oceans. However, plastic debris in freshwater organisms has not been well studied. The occurrence, characterization, polymer composition, and seasonal and spatial distribution of plastic debris were investigated in 9 species of wild freshwater fish from the Pearl River catchment, south China. Approximately 50% of the total fish (n = 279) belonging to 9 species were found to ingest plastic debris with an average abundance of 7.0 ± 23.8 items/individual, indicating wide plastic contamination in the Pearl River catchment. Plastic debris were predominantly transparent or white in color, fibers or fragments in shape, and polyethylene, polypropylene, ethylene–propylene copolymer (PE‐PP), and polyethylene terephthalate (PET) in polymer composition. A species‐specific distribution of the plastic debris was observed in terms of abundance, shape, and polymer composition. Redbelly tilapia had the highest (27.4 ± 54.0 items/individual), whereas common carp had the lowest (0.2 ± 0.4 items/individual) abundance of the plastic debris in their gastrointestinal tracts. Fibers of PET were predominant in the freshwater species except in barbel chubs, which had mostly PE‐PP fragments. Omnivores and bottom‐dwellers were more likely to ingest plastic debris. Seasonal variation was observed, with generally higher abundance of plastic debris in fish collected in the dry season than in the wet season. Environ Toxicol Chem 2019;38:1504–1513. © 2019 SETAC

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Persistent halogenated compounds in fish from rivers in the Pearl River Delta, South China: Geographical pattern and implications for anthropogenic effects on the environment

Cited by 46 publications

References 36 publications

Species‐specific and structure‐dependent debromination of polybrominated diphenyl ether in fish by in vitro hepatic metabolism

Species‐specific and structure‐dependent debromination of polybrominated diphenyl ether in fish by in vitro hepatic metabolism

Evaluation of Surface Water Quality on Spatiotemporal Gradient Using Multivariate Statistical Techniques: A Case Study of River Chenab, Pakistan

Occurrence and Species‐Specific Distribution of Plastic Debris in Wild Freshwater Fish from the Pearl River Catchment, China

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