Showing papers in "Aquatic Toxicology in 2008"

TL;DR: The data provided underline that not only the inherent toxicity of manufactured nanoparticles, but also interactions with other compounds and characterisation of nanoparticles in aqueous suspension are of importance for risk assessment of nanomaterials.

TL;DR: PAHs dissolved from oil are toxic and physical contact with oil droplets is not necessary for embryotoxicity, and the response difference between compartments is explained by diffusion.

TL;DR: A multivariate analysis revealed that the various response patterns differed based on the concentration of CdTe, thus permitting the identification of biomarkers associated with the form (colloidal vs. molecular) of cadmium.

TL;DR: The data indicate that the UV-filter oxybenzone alters endocrine or reproduction endpoints in two fish species, but at concentrations significantly higher than those measured in the environment.

TL;DR: It is suggested that sublethal exposure to fluoxetine decreases the ability of hybrid striped bass to capture prey and that serotonin can be used as a biomarker of exposure and effect.

TL;DR: Results demonstrate that turbulence of fatty acid beta-oxidation and oxidative stress responses were involved in the PFDoA-induced hepatotoxicity of female zebrafish.

TL;DR: Significant increases were observed in the levels of various thiols including phytochelatins, the activities of enzymes of thiolic metabolism as well as arsenate reductase (AR) that enabled plants to detoxify at least some part of As(V) through its reduction and subsequent complexation.

TL;DR: The hypothesis is that copper-induced loss in viability and genotoxicity in trout gill cells are partially triggered by the generation of ROS and related to the free Cu(2+).

TL;DR: Overall this study confirmed the utility of caged mussels to assess the remobilization of chemicals from dredged sediments and the onset of potentially harmful biological effects.

TL;DR: The results demonstrate that glufosinate affects the activities of antioxidant enzymes, disrupts chloroplast ultrastructure, and reduces transcription of photosynthesis-related genes in C. vulgaris.

TL;DR: The results demonstrate that increasing duration of HBCDD exposure induced EROD and PROD activities, caused excess ROS formation, finally resulted in oxidative damage to lipids, proteins and DNA and decreased antioxidant capacities in fish.

TL;DR: Results of this study indicate that osmolality and locomotor activity in G. pulex could be effective ecophysiological/behavioural markers to monitor freshwater ecosystem and to assess the health of organisms.

TL;DR: The results suggested that ammonia exerted its toxic effect on the growth of V. natans (Lour.) Hara, at least in part, by induction of oxidative stress and inhibition of photosynthesis.

TL;DR: Findings imply an antioxidant role for GSTS and highlight its importance as a biomarker of exposure to trace metals in T. japonicus, although for some trace metals such as silver the response was not consistent in concentration and time-series exposure experiments.

TL;DR: The results support the prediction that increases in energy expenditure negatively affects processes vital to the survival of an organism, such as growth, as well as the need for mechanistic molecular understanding of the mode of action of this pollutants.

TL;DR: The results suggested that the Japanese medaka HPG-PCR array has potential not only as a screening tool of potential endocrine-disrupting chemicals but also in elucidating mechanisms of action.

TL;DR: Black masses suggesting the presence of CNTs were observed inside the intestine using optical microscopy and TEM, and confirmed by Raman spectroscopy analysis, which showed no genotoxicity in erythrocytes of larvae exposed to DWNTs in water, but acute toxicity at every concentration of DW NTs studied which was related to physical blockage of the gills and/or digestive tract.

TL;DR: The results suggest that the use of internal copper concentrations and net uptake rates alone cannot explain differences in species-sensitivity for different algal species, and model prediction of copper toxicity to marine biota and understanding fundamental differences inspecies-s sensitivity will require further knowledge of cellular detoxification mechanisms.

TL;DR: Analyses of the aberration types showed clastogenic and aneugenic effects for the roots exposed to the polluted waters from Guaecá river, besides the induction of cell death, which were induced by the petroleum hydrocarbons derived from the oil leakage.

TL;DR: The results show that antibiotic pollution can be a potential threat to both bacterial diversity and an essential ecosystem service they perform in marine sediment.

TL;DR: It is suggested that EE2 can adversely affect the fecundity, sex differentiation, gametes development, and other reproductive functions of both male and female zebrafish, and some of the toxic effects persist.

TL;DR: It is demonstrated that the release of As(V) and/or As(III), together with the bio-reduction of As-V and the subsequent methylation of As (III) may be a detoxification mechanism for these algae.

TL;DR: Mixtures of temperature and substance concentration as independent variables were shown to act synergistically in a dose-level-dependent manner on hatching rate, whereas the magnitude of synergism depended on effect levels.

TL;DR: Maternal transfer to eggs and relationships between blood and eggs concentrations during the nesting season were investigated, and toxic metals were lower than essential elements likely due to the high pelagic nature of leatherbacks that seems to limit exposure to toxic elements.

TL;DR: It is indicated that exposure to environmental concentrations of diuron and other agricultural contaminants and further exposure to diuron can have measurable effects on small river biofilm communities.

TL;DR: The results suggest that O. melastigma can serve as a model marine fish for assessing multiple in vivo molecular responses to stresses in the marine environment.

TL;DR: Differences in the sensitivity of the two species of Ulva to Cu may influence their competitive interactions in Korean coastal waters experiencing temporal increases in the loading of heavy metals.

TL;DR: Considering that many bacteria thrive in close vicinity of diatom cells, it is likely that these compounds may shape the structure of associated bacterial communities by representing a selection force during the final stages of blooms, when senescence and nutrient limitation increase the potential production and release of aldehydes.

TL;DR: It is suggested that cadmium-induced neurotoxicity can be caused by impaired neurogenesis, resulting in markedly reduced neuronal differentiation and axonogenesis.

TL;DR: Validation from toxicokinetic and toxicodynamic modelling studies should be made in the future as a way to understand toxicological pathways involved in complex mixture/combination exposures.