Influence of salinity and fish species on PAH uptake from dispersed crude oil

Ramachandran, Shahunthala D.; Sweezey, Michael; Hodson, Peter V.; Boudreau, Monica; Courtenay, Simon C.; Lee, Kenneth; King, Thomas; Dixon, Jennifer A.

doi:10.1016/j.marpolbul.2006.02.009

Cited by 118 publications

(56 citation statements)

References 15 publications

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“…The PAHs that were used in the present study are known to be moderately potent AhR agonists in vitro (Barron et al 2004), and have been shown to cause significant induction of biotransformation enzymes in rainbow trout (Fragoso et al 2006;Jonsson et al 2006;Oikari et al 2002;Ramachandran et al 2006). Surprisingly, the activity of neither the phase I biotransformation enzyme EROD, nor the phase II enzyme GST was altered by exposure to the PAH spiked sediments during the 5-day simulated flood events.…”

Section: Identification Of Suitable Biomarkers For Use In Coupled Hydmentioning

confidence: 68%

A combined hydraulic and toxicological approach to assess re-suspended sediments during simulated flood events. Part I–multiple biomarkers in rainbow trout

et al. 2010

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Purpose One of the central issues related to global changes in weather is the increasing occurrence of flood events that can result in the re-suspension of contaminated sediments in rivers. Here, we report on a proof-of-concept study combining hydraulic engineering and ecotoxicology in a new interdisciplinary approach to assess the toxicity of resuspended polluted sediments after a simulated flood event. Materials and methods Rainbow trout (Oncorhynchus mykiss) were exposed for 5 days under simulated flood conditions in an annular flume with artificial sediments that were spiked with a mixture of polycyclic aromatic hydrocarbons (PAH) at environmentally relevant concentrations.Specifically, the objective of this study was to bridge the gap between the physical re-suspension of pollutants and resulting toxicological impacts on aquatic organisms. A suite of different molecular, biochemical and histological markers was used to test the hypothesis that re-suspension of sediments can lead to re-mobilization of PAHs and subsequently to effects on aquatic organisms. Results and discussion The micronucleus frequency was significantly 4.3-fold elevated after exposure. There was no significant indication of Aryl hydrocarbon receptor signaling (no EROD induction or increased CYP1A protein content, only slight induction of CYP1A gene expression). Biliary metabolite concentration was the most sensitive Responsible editor:

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Section: Identification Of Suitable Biomarkers For Use In Coupled Hydmentioning

confidence: 68%

A combined hydraulic and toxicological approach to assess re-suspended sediments during simulated flood events. Part I–multiple biomarkers in rainbow trout

et al. 2010

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“…Numerous studies have shown an increasing metal uptake by diverse aquatic organisms at reduced salinities [81][82][83]. Other studies have shown that solubility of many PAHs depends on salinity in the ambient water [84]. Thus, floods and rainfalls will regulate the extent of exposure to toxic substances of seafood, hence of its consumers.…”

Section: Heavy Rainfall and Floodsmentioning

confidence: 99%

Impact of climate change on waterborne diseases

Funari

Manganelli

Sinisi

2012

Annali Dell'Istituto Superiore Di Sanità

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Abstract. Change in climate and water cycle will challenge water availability but it will also increase the exposure to unsafe water. Floods, droughts, heavy storms, changes in rain pattern, increase of temperature and sea level, they all show an increasing trend worldwide and will affect biological, physical and chemical components of water through different paths thus enhancing the risk of waterborne diseases. This paper is intended, through reviewing the available literature, to highlight environmental changes and critical situations caused by floods, drought and warmer temperature that will lead to an increase of exposure to water related pathogens, chemical hazards and cyanotoxins. The final aim is provide knowledge-based elements for more focused adaptation measures.Key words: climate change, waterborne diseases, microbial pathogens, chemical contaminants, toxic cyanobacteria.Riassunto (Effetto dei cambiamenti climatici sulle malattie trasmesse dall'acqua). I cambiamenti climatici e del ciclo idrologico metteranno a rischio la disponibilità d'acqua e aumenteranno l'esposizione ad acqua contaminata. Le alluvioni, le siccità, le grandi tempeste, le variazioni nella frequenza ed intensità delle piogge, il riscaldamento e l'aumento del livello del mare crescono in ogni parte del mondo e influenzeranno le caratteristiche biologiche e chimico-fisiche dell'acqua attraverso diversi meccanismi, con il conseguente aumento del rischio di malattie trasmesse dall'acqua. L'analisi della letteratura disponibile, presentata in questo articolo, evidenzia i cambiamenti ambientali e le situazioni critiche causate da alluvioni, siccità e crescente riscaldamento che causeranno un aumento di esposizione a patogeni, inquinanti chimici e cianotossine, legati all'acqua. Lo scopo è di fornire gli elementi scientifici di base per misure di adattamento mirate.Parole chiave: cambiamenti climatici, malattie trasmesse dall'acqua, microrganismi patogeni, contaminanti chimici, cianobatteri tossici.

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“…Different studies have assessed the toxicity of petroleum WSF in fish and they have shown that these organisms are reliable bioindicators of PAHs and BTEX contamination in marine samples. Negative effects of petroleum WSF were reported upon fish growth and metabolism, due to pathologies in organs such as liver, gills, and kidney (Lockhart et al 1996;Khan 2003;Morales-Caselles et al 2006;Ramachandran et al 2006).…”

Section: Introductionmentioning

confidence: 99%