• Publications
  • Influence
Effect of initial cell density on the bioavailability and toxicity of copper in microalgal bioassays.
Findings suggest that standard static laboratory bioassays using 10(4) to 10(5) algal cells/ml may seriously underestimate metal toxicity in natural waters. Expand
Development of an Improved Rapid Enzyme Inhibition Bioassay with Marine and Freshwater Microalgae Using Flow Cytometry
For the five species tested, inhibition of FDA fluorescence was relatively insensitive to copper, even at copper concentrations that severely inhibited cell division rate, and these short-term bioassays that detect sublethal endpoints may provide a more rapid and cost-effective way of monitoring contaminant impacts in natural waters. Expand
Comparison of five in vitro bioassays to measure estrogenic activity in environmental waters.
With standardized bioassay data analysis and consistency of operating protocols, bioanalytical tools are a promising advance in the development of a tiered approach to environmental water quality monitoring. Expand
Bioaccumulation, biotransformation and trophic transfer of arsenic in the aquatic food chain.
Most of the studies on arsenic biotransformation, speciation, and trophic transfer have focused on marine environments; little is known about these processes in freshwater systems. Expand
Heavy metals in Australian grown and imported rice and vegetables on sale in Australia: health hazard.
The concentrations of heavy metals were considerably higher in brown rice varieties than white rice varieties, indicating Australian brown rice as a potential source of dietary heavy metals for Australian consumers. Expand
Toxicity of metal mixtures to a tropical freshwater alga (Chlorella sp): the effect of interactions between copper, cadmium, and zinc on metal cell binding and uptake.
The results suggest that all three metals share some common uptake and transport sites on Chlorella cells and that copper out competes both cadmium and zinc for cell binding. Expand
Impact of the introduced poeciliid Gambusia holbrooki (Girard, 1859) on the growth and reproduction of Pseudomugil signifer (Kner, 1865) in Australia
The results indicate that, at least in a captive situation, the presence of the exotic species had a very deleterious effect on the breeding and hence possible survival of the native species. Expand
Development of flow cytometry-based algal bioassays for assessing toxicity of copper in natural waters.
Results demonstrate that flow cytometry is a useful technique for toxicity testing with microalgae and provide additional information regarding the general mode of action of copper (II) to algal species. Expand
The effect of 17beta-estradiol on the gonopodial development and sexual activity of Gambusia holbrooki.
  • C. Doyle, R. Lim
  • Biology, Medicine
  • Environmental toxicology and chemistry
  • 1 December 2002
The degree of gonopodial maturation and frequency of sexual activity are important characteristics for the reproductive success of male mosquitofish and it is suggested that these traits provide sensitive and ecologically relevant endpoints for assessing estrogenic activity under both laboratory--and field-exposure conditions. Expand
Riverine endosulfan concentrations in the Namoi River, Australia: Link to cotton field runoff and macroinvertebrate population densities
The multivariate analysis of the 1997/98 data with the principal response curves (PRC) method indicated that endosulfan explained a significant proportion (25%) of the variation in the total macroinvertebrate community. Expand