Fish biological effect monitoring of chemical stressors using a generalized linear model in South Sea, Korea

Jung, Jee-Hyun; Choi, Seung Bae; Hong, Sang Hee; Chae, Young Sun; Kim, Hana; Yim, Un Hyuk; Ha, Sung Yong; Han, Gi Myung; Kim, Dae Jung; Shim, Won Joon

doi:10.1016/j.marpolbul.2013.10.029

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…This study detected only a two-fold change. However, studies that used statistical significance to compare reference and exposed EROD activities typically had at least a two-fold increase in activity before significant increases were detected [42]- [44].…”

Section: Liver Detoxificationmentioning

confidence: 99%

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs

Tunna¹,

Smits²,

Rogers³

et al. 2016

JEP

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Ecological impacts of contaminants on population patterns in wild fish are impacted by many contaminants that readily enter aquatic systems. Responses to toxicants by individuals in lab studies generally do not predict population level consequences in natural systems. Trace levels of contaminants are present in all major rivers in southern Alberta, Canada, with concentrations higher downstream of anthropogenic inputs like agricultural land-use and inputs of municipal wastewater effluents. Longnose dace (Rhinichthys cataractae) were used as a sentinel species to study field-based population-level responses to contaminants. We hypothesized that biomarker activity, triggered by contaminant exposure, should increase downstream of anthropogenic inputs in two southern Alberta rivers, with corresponding relations between biomarker activity and sex ratios, after accounting for age structure. Liver detoxification (ethoxyresorufin-O-deethylase activity = EROD) measured at reference and exposed sites on each river differed significantly in only the Bow River system. Sex ratios varied more downstream of anthropogenic inputs than upstream, but the direction of sex ratio bias was inconsistent and temporally dynamic. Sex ratios correlated with liver detoxification in only the Bow River. Taken together, these results suggest that contaminants alter sex ratios in longnose dace, but that there is variation in anthropogenic stressors among rivers.

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Section: Liver Detoxificationmentioning

confidence: 99%

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs

Tunna¹,

Smits²,

Rogers³

et al. 2016

JEP

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Detection of Effects Caused by Very Low Levels of Contaminants in Riverine Sediments Through a Combination of Chemical Analysis, In Vitro Bioassays, and Farmed Fish as Sentinel

Quesada-García

Valdehíta

Olmo

et al. 2015

Arch Environ Contam Toxicol

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Aquatic organisms are often exposed to mixtures of low levels of pollutants whose presence and effects can pass easily unnoticed if only traditional monitoring strategies are employed. The main aim of this work was to assess the presence and effects of trace levels of pollutants in a scarcely affected area through the combination of chemical and biological approaches. Sediments were collected along a river with little anthropogenic pressure and assayed for cytochrome P450 (Cyp1a)-dependent ethoxyresorufin-O-deethylase (EROD) activity with the rainbow trout gonadal cell line RTG-2. Chemical analyses were performed in these sediments using two-dimensional gas chromatography-time-of-flight mass spectrometry. Sediment samples induced EROD activity, and chemical analyses evidenced the presence of a wide variety of contaminants in the range of nanograms per gram of dry weight. Correlation analysis between EROD induction and chemical analyses data showed an r value of 0.840 (p < 0.05). In addition, fish from a fish farm located downstream of the sampling points exhibited high hepatic EROD levels as well as an induced expression of cyp1a and cyp3a. In conclusion, only an appropriate combination of biological and chemical techniques allowed the detection of the presence of trace levels of contaminants in a theoretically nonaffected river.

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Fish biological effect monitoring of chemical stressors using a generalized linear model in South Sea, Korea

Cited by 2 publications

References 37 publications

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs

Detection of Effects Caused by Very Low Levels of Contaminants in Riverine Sediments Through a Combination of Chemical Analysis, In Vitro Bioassays, and Farmed Fish as Sentinel

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Fish biological effect monitoring of chemical stressors using a generalized linear model in South Sea, Korea

Cited by 2 publications

References 37 publications

Detoxification Efforts in Longnose Dace (&lt;i&gt;Rhinichthys cataractae&lt;/i&gt;) Exposed to Municipal and Agricultural Inputs

Detoxification Efforts in Longnose Dace (&lt;i&gt;Rhinichthys cataractae&lt;/i&gt;) Exposed to Municipal and Agricultural Inputs

Detection of Effects Caused by Very Low Levels of Contaminants in Riverine Sediments Through a Combination of Chemical Analysis, In Vitro Bioassays, and Farmed Fish as Sentinel

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Product

Resources

About

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs

Detoxification Efforts in Longnose Dace (<i>Rhinichthys cataractae</i>) Exposed to Municipal and Agricultural Inputs