Biomonitoring Articles

208 Results found
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  • Subcategory: Biomonitoring ×

Physiological effects of essential metals on two detritivores: Atyaephyra desmarestii (Millet) and Echinogammarus meridionalis (Pinkster)

by John Wiley & Sons, Ltd.  (Oct. 16, 2015)

Freshwater ecosystems are essential for humans, however the input of several types of contamination lead to the degradation of these ecosystems. Thus, it is urgent to assess their health in order to allow actions for prevention and remediation. The level of trace metals can be enhanced due to natural or anthropogenic sources. Essential metals, ...

Concentration dependence of biotransformation in fish liver S9: Optimizing substrate concentrations to estimate hepatic clearance for bioaccumulation assessment

by John Wiley & Sons, Ltd.  (Oct. 15, 2015)

In vitro bioassays to estimate biotransformation rate constants of contaminants in fish are currently being investigated to improve bioaccumulation assessments of hydrophobic contaminants. The present study investigates the relationship between chemical substrate concentration and in vitro biotransformation rate of 4 environmental contaminants ...

Active biomonitoring locates pollutant sources in the Anacostia River (MD; DC; USA)

by John Wiley & Sons, Ltd.  (Oct. 1, 2015)

The freshwater Anacostia River watershed (MD, DC, USA) was surveyed for the sources of bioavailable EPA Priority Pollutants and toxic metals by active biomontoring (ABM) using the freshwater Asiatic clam Corbicula fluminea. The Anacostia River is a 456km2 tributary of the tidal freshwater Potomac River that includes the city of Washington DC ...

Sublethal effects of multi‐walled carbon nanotube exposure in the invertebrate Daphnia magna

by John Wiley & Sons, Ltd.  (Jul. 29, 2015)

Carbon nanotubes were previously demonstrated to accumulate on the carapace and in the gut of daphnids in aquatic exposures. The purpose of the present study is to assess the effects of multi‐walled carbon nanotube (MWNT) exposure on the sublethal Daphnia magna endpoints swimming behavior, algal feeding, growth, and reproduction and to ...

Development of a recombinant human ovarian (BG1) cell line containing estrogen receptor α and β for improved detection of estrogenic/antiestrogenic chemicals

by John Wiley & Sons, Ltd.  (Jul. 3, 2015)

Estrogenic endocrine disrupting chemicals are found in environmental and biological samples, commercial and consumer products, food, and numerous other sources. Given their ubiquitous nature and potential for adverse effects, there is a critical need for rapidly detecting these chemicals. We developed an estrogen‐responsive recombinant human ...

Responses of Hyalella azteca to acute and chronic microplastic

by John Wiley & Sons, Ltd.  (Jun. 4, 2015)

Limited information is available on the presence of microplastics (MPs) in freshwater systems, and even less about the toxicological implications of the exposure of aquatic organisms to plastic particles. The present study was conducted to evaluate the effects of MP ingestion on the freshwater amphipod, Hyalella azteca. H. azteca was exposed to ...

Tracking multiple modes of endocrine activity in Australia's largest inland sewage treatment plant and effluent‐receiving environment using a panel of in vitro bioassays

by John Wiley & Sons, Ltd.  (May 2, 2015)

Estrogenicity of sewage effluents, and related ecotoxicological effects in effluent‐receiving environments, has been widely reported over the last two decades. However, relatively little attention has been given to other endocrine pathways that may be similarly disrupted by a growing list of ‘contaminants of concern’. Further, the Australian ...

A robust bioassay to assess the toxicity of metals to the antarctic marine microalga Phaeocystis antarctica

by John Wiley & Sons, Ltd.  (Apr. 30, 2015)

Despite evidence of contamination in Antarctic coastal marine environments, no water‐quality guidelines have been established for the region because of a paucity of biological effects data for local Antarctic species. Currently, there is limited information on the sensitivity of Antarctic microalgae to metal contamination, which is exacerbated ...

Linking trace element variations with macronutrients and major cations in marine mussels Mytilus edulis and Perna viridis

by John Wiley & Sons, Ltd.  (Apr. 21, 2015)

Marine mussels have long been used as biomonitors of contamination of trace elements, but little is known whether variation in tissue trace elements is significantly associated with those of macronutrients and major cations. Here, we examined the variability of macronutrients and major cations and their potential relationships with ...

Improved sensitivity to heavy metals in the bioluminescence assay using alternative salt solutions

by microLAN On-line Biomonitoring Systems  (Apr. 1, 2015)

Introduction The marine bacterium Vibrio fischeri is widely used for the toxicity assessment of environmental samples. The toxicity is measured in a medium containing 2% NaCl. When the bacteria are exposed to toxic compounds, the light production is inhibited. Toxicity values are obtained after 15 and 30 minutes exposure and expressed as EC50 ...

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