The aim of this study was utilizing Kemin multi-enzyme in common carp (Cyprinus carpio) diet and investigating its impact on fish survival rates exposed to the lethal concentration of abamectin. For this purpose, 42 fish were divided into two experimental diets, containing 0 and 1000 mg/kg of diets for 6 weeks. LC50 of abamectin for fish dietary consumed Kemin multi-Enzyme was determined with d...

The study's objectives were to investigate the acute toxicity and related biochemical effects of levamisole ivermectin in mice. 24 h oral median lethal dose (LD50) was determined by up-and-down method 155.5 mg/ kg body weight. treated mice showed signs poisoning represented excessive grooming, lacrimation, piloerection, straub tail, tachycardia, bulged eyes, tremor, convulsion finally death wit...

the effects of pesticide endosulfan (an organochlorine compound), on the ovaries of bluegill fish (lepomis macrochirus) were studied. exposures for 24 hs with histological preparations at 25% (0.25 î¼g/l), 75 % (0.75 î¼g/l), and 100 % (1 î¼g/l) sub lethal concentrations were examined. the control contained an abundance of the different stages of oocytes (oocytes i, ii, iii, and iv) and had an i...

background: several compounds obtained from plants have potential insecticidal, growth deterrent or repellent characteristics. the control of hard ticks by non-chemical substances was targeted in this study. methods: the effect of 36 materials on in-vitro ticks was studied, including 2 absolute controls (water only or ab­solute ethyl alcohol only), 6 conventionally used spinosad preparations (a...

An attempt is made in the present study to analyse larvicidal activity of Haridra and Tulsi against Aedes Anopheles larvae. Larval bioassays were carried out at different concentrations 50-500ppm. The larval mortality fourth instar larvae A. aegypti after 24h treatment was observed separately control, 50, 62.5, 100, 150, 250, 300 500 ppm concentrations. Based on Probit analysis, Significant eff...

The median 96-h lethal zinc concentration (LC50) was 439 microg Zn/L (hardness of 154 mg/L as CaCO3) for feral mottled sculpin (Cottus bairdi), decreasing to a median incipient lethal level of 266 microg Zn/L after 13 d. The 30-d chronic value was 255 microg Zn/L. The acute toxicity-hardness (ln-ln) slope of 1.022 exceeded that of the current U.S. Environmental Protection Agency zinc criteria. ...

Pesticides have an innate capacity to cause damage to biological system. Considering above fact the present study deals with the effect of the insecticide malathion on histological and biochemical study on cardiac muscle tissue in Channa punctatus. In present study effect of sub lethal concentration (0.8 ppm) of malathion on protein, lipid and glycogen content and histopathological changes in h...

The lethal and sublethal effects of hydroxyurea were studied in Sarcoma 180 in vitro in relation to drug concentration and drug exposure duration using cloning methods, radioautography, and flow microfluorometry. It was shown that postperturbation changes in radioautographic labeling intensity reflected real changes in the rate of DNA synthesis in individual cells. The data suggest that both th...

the aim of this study was to evaluate the effect of walnut tree root (juglandaceae) on escherichia coli is resistant to various antibiotics. walnut tree root extract was obtained using a rotary device. 20 cases of e. coli was obtained from urinary tract infections zabul hospital and mic and mbc were determined using dilution in the wells. the results of the study showed that the concentrations ...

in this study the acute toxicity of organophosphorous pesticide in four native fishes of khouzestan province including: barbus sharpeyi, barbus grypus, barbus barbulus and barbus xanthopterus were investigated. the acute toxicity test was conducted following the organization for economic cooperation and development (oecd) under static-renewal test. each fish species exposed to serial dilution o...