Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers

C. K. Kwok; S. M. Yang; Nai Ki MAK; Chris K C WONG; Y. Liang; Kelvin S Y LEUNG; L. Young; Ming Hung WONG

doi:10.1016/j.ecoenv.2010.01.012

Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers

C. K. Kwok, S. M. Yang, Nai Ki MAK, Chris K C WONG, Y. Liang^*, Kelvin S Y LEUNG, L. Young, Ming Hung WONG

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

21 Citations (Scopus)

Abstract

Sediments from Mai Po Ramsar site, Hong Kong were in general shown to be highly toxic based on the results of four toxicity tests (Microtox^® solid-phase test, Daphnia mortality test, algal [Microcystis aeruginosa] growth inhibition test and ryegrass [Lolium perenne] seed germination/root elongation test). Sediment of the mudflat (which is open to Deep Bay, i.e., the pollution source) was the most toxic while sediment of gei wai 24g (an enclosed freshwater pond) was the least toxic. Results of biomarker studies (tilapia hepatic metallothionein; glutathione (GSH) and EROD activity using H4IIE rat hepatoma cell) were also concordant with those in the toxicity tests. Significant liner relationships (p<0.01) were found between GSH contents in the rat hepatoma cells and PAHs, OCPs contents in the sediment extracts. It is recommended that the present suite of bioassays is useful and is biologically relevant for future ecotoxicological studies focusing on similar wetlands.

Original language	English
Pages (from-to)	541-549
Number of pages	9
Journal	Ecotoxicology and Environmental Safety
Volume	73
Issue number	4
DOIs	https://doi.org/10.1016/j.ecoenv.2010.01.012
Publication status	Published - May 2010

Scopus Subject Areas

Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

User-Defined Keywords

Daphnia
EROD
Glutathione
Heavy metals
Mai Po Ramsar site
Microtox
Organochlorine pesticides
Polycyclic aromatic hydrocarbons
Rat hepatoma cell line
Ryegrass

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ecoenv.2010.01.012

Cite this

@article{46b9100952bf47f9beb6a2f877966ade,

title = "Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers",

abstract = "Sediments from Mai Po Ramsar site, Hong Kong were in general shown to be highly toxic based on the results of four toxicity tests (Microtox{\textregistered} solid-phase test, Daphnia mortality test, algal [Microcystis aeruginosa] growth inhibition test and ryegrass [Lolium perenne] seed germination/root elongation test). Sediment of the mudflat (which is open to Deep Bay, i.e., the pollution source) was the most toxic while sediment of gei wai 24g (an enclosed freshwater pond) was the least toxic. Results of biomarker studies (tilapia hepatic metallothionein; glutathione (GSH) and EROD activity using H4IIE rat hepatoma cell) were also concordant with those in the toxicity tests. Significant liner relationships (p<0.01) were found between GSH contents in the rat hepatoma cells and PAHs, OCPs contents in the sediment extracts. It is recommended that the present suite of bioassays is useful and is biologically relevant for future ecotoxicological studies focusing on similar wetlands.",

keywords = "Daphnia, EROD, Glutathione, Heavy metals, Mai Po Ramsar site, Microtox, Organochlorine pesticides, Polycyclic aromatic hydrocarbons, Rat hepatoma cell line, Ryegrass",

author = "Kwok, {C. K.} and Yang, {S. M.} and MAK, {Nai Ki} and WONG, {Chris K C} and Y. Liang and LEUNG, {Kelvin S Y} and L. Young and WONG, {Ming Hung}",

note = "Funding Information: The authors thank Mr. M.F. Tse, Mr. L.C. Wong, Mr. B. Smith and Dr. J.X. Wen for their assistance in field sampling and technical support. Special thanks are given to Mr. K.Y. Chan for his assistance in refining the artwork. Financial support from the Science Faculty Strategic Research of Hong Kong Baptist University (no. FRG/03-04/II-51 ), and Environment and Conservation Fund of Hong Kong Environmental Protection Department (ECF Project no. 16/2003 ) is gratefully acknowledged. ",

year = "2010",

month = may,

doi = "10.1016/j.ecoenv.2010.01.012",

language = "English",

volume = "73",

pages = "541--549",

journal = "Ecotoxicology and Environmental Safety",

issn = "0147-6513",

publisher = "Academic Press Inc.",

number = "4",

}

TY - JOUR

T1 - Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers

AU - Kwok, C. K.

AU - Yang, S. M.

AU - MAK, Nai Ki

AU - WONG, Chris K C

AU - Liang, Y.

AU - LEUNG, Kelvin S Y

AU - Young, L.

AU - WONG, Ming Hung

N1 - Funding Information: The authors thank Mr. M.F. Tse, Mr. L.C. Wong, Mr. B. Smith and Dr. J.X. Wen for their assistance in field sampling and technical support. Special thanks are given to Mr. K.Y. Chan for his assistance in refining the artwork. Financial support from the Science Faculty Strategic Research of Hong Kong Baptist University (no. FRG/03-04/II-51 ), and Environment and Conservation Fund of Hong Kong Environmental Protection Department (ECF Project no. 16/2003 ) is gratefully acknowledged.

PY - 2010/5

Y1 - 2010/5

N2 - Sediments from Mai Po Ramsar site, Hong Kong were in general shown to be highly toxic based on the results of four toxicity tests (Microtox® solid-phase test, Daphnia mortality test, algal [Microcystis aeruginosa] growth inhibition test and ryegrass [Lolium perenne] seed germination/root elongation test). Sediment of the mudflat (which is open to Deep Bay, i.e., the pollution source) was the most toxic while sediment of gei wai 24g (an enclosed freshwater pond) was the least toxic. Results of biomarker studies (tilapia hepatic metallothionein; glutathione (GSH) and EROD activity using H4IIE rat hepatoma cell) were also concordant with those in the toxicity tests. Significant liner relationships (p<0.01) were found between GSH contents in the rat hepatoma cells and PAHs, OCPs contents in the sediment extracts. It is recommended that the present suite of bioassays is useful and is biologically relevant for future ecotoxicological studies focusing on similar wetlands.

AB - Sediments from Mai Po Ramsar site, Hong Kong were in general shown to be highly toxic based on the results of four toxicity tests (Microtox® solid-phase test, Daphnia mortality test, algal [Microcystis aeruginosa] growth inhibition test and ryegrass [Lolium perenne] seed germination/root elongation test). Sediment of the mudflat (which is open to Deep Bay, i.e., the pollution source) was the most toxic while sediment of gei wai 24g (an enclosed freshwater pond) was the least toxic. Results of biomarker studies (tilapia hepatic metallothionein; glutathione (GSH) and EROD activity using H4IIE rat hepatoma cell) were also concordant with those in the toxicity tests. Significant liner relationships (p<0.01) were found between GSH contents in the rat hepatoma cells and PAHs, OCPs contents in the sediment extracts. It is recommended that the present suite of bioassays is useful and is biologically relevant for future ecotoxicological studies focusing on similar wetlands.

KW - Daphnia

KW - EROD

KW - Glutathione

KW - Heavy metals

KW - Mai Po Ramsar site

KW - Microtox

KW - Organochlorine pesticides

KW - Polycyclic aromatic hydrocarbons

KW - Rat hepatoma cell line

KW - Ryegrass

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U2 - 10.1016/j.ecoenv.2010.01.012

DO - 10.1016/j.ecoenv.2010.01.012

M3 - Journal article

C2 - 20153057

AN - SCOPUS:77951652875

SN - 0147-6513

VL - 73

SP - 541

EP - 549

JO - Ecotoxicology and Environmental Safety

JF - Ecotoxicology and Environmental Safety

IS - 4

ER -

Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers

Abstract

Scopus Subject Areas

User-Defined Keywords

UN SDGs

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