Mosquito fish (Gambusia affinis) is a species often used as bioindicator because it has high adaptability to water quality changes. Linear alkylbenzene sulfonate (LAS) surfactant found in waters and can cause death for the biota that lives it. This study aimed analyze impact of LAS on survival mosquito determine minimum concentration tissue damage. Research conducted during April 2022 using 500...

background: pesticides are widely used in agriculture. excessive use of pesticides has health risk for human and threatens non-target organisms. this research aimed to determine lethal concentrations of malathion and hinosan for carassius auratus (5±1 gr) [mean ± sd]. methods: experiments were performed according to o.e.c.d for 4 days (96 h) and concentrations of 0, 1, 2, 4, 8 mg l-1 hinosan an...

the need of aquarists for proper and safe disinfection of fish with chloramine-t (cl-t) necessitates toxico/pathologic examinations.   this study assays toxicity level of cl-t and histopathologic changes of gills, liver, kidney and brain of treated zebrafish (danio rerio). groups of 10 zebrafish were treated with 0 (control), 5, 10, 15, 30, 50,100 and 200 mg/l of cl– t. mortality was recorded a...

As agricultural expansion and intensification increase to meet the growing global food demand, so too will insecticide use and thus the risk of non-target effects. Insecticide pollution poses a particular threat to aquatic macroarthropods, which play important functional roles in freshwater ecosystems. Thus, understanding the relative toxicities of insecticides to non-target functional groups i...

The starting point of toxicity testing of any chemical in an organism is the determination of its Lethal Concentration 50 (LC50). In the present study, LC50 of a fluorinated insecticide cryolite is determined in a non-target insect model, Drosophila melanogaster. Interestingly, the result shows that acute LC50 of cryolite was much greater in comparison to the chronic one in case of Drosophila l...

Room-temperature ionic liquids (ILs) are being promoted as environmentally friendly alternatives to volatile organic solvents currently used by industry. Because ILs are novel and not yet in widespread use, their potential impact on aquatic organisms is unclear. We studied the effects of several ILs on the survivorship and behavior (movement and feeding rates) of the freshwater pulmonate snail,...

Application of organophosphorus (OP) insecticides to agricultural fields during the spring often overlaps the period of spawning, egg incubation, and larval stages of fish species such as walleye (Stizostedion vitreum). Because life stage can affect uptake, distribution, and effects of contaminants, our objective was to identify the most sensitive life stage of walleye tochlorpyrifos, a broad-s...

Water-distilled essential oil from the aerial parts of Dipsacus japonicus Miq. (Dipsacaceae) at the flowering stage was analysed by gas chromatography-mass spectrometry (GC-MS). Forty-six compounds, accounting for 96.76% of the total oil, were identified and the main compounds of the essential oil were linalool (11.78%), trans-geraniol (8.58%), 1,8-cineole (7.91%), beta-caryophyllene (5.58%), a...

In a project investigating the ecotoxicity of polycyclic aromatic compounds (PACs), we have previously reported on the sublethal toxicity of eight PACs to springtails (Folsomia fimetaria) and enchytraeids (Enchytraeus crypticus). The model substances included four polycyclic aromatic hydrocarbons (PAHs) and four N-S-O-heterocyclics. Here, new data are presented on the effects of PACs on the sur...