b a ckground: the german cockroach, b lattella germanica is a major hygienic pest and mechanical vector for path- ogenic agents in hospitals and residential areas. the development of insecticide resistance is a serious problem in controlling of this pest. toxicity of four commonly used insecticides (permethrin, cypermethrin, malathion and chlorpyrifos) against two hospital- collected strains of...

Introduction: Alpha-Cypermethrin is a synthetic pyrethroid insecticide. Pyrethroids are derived from pyrethrins, which toxic components found in the Chrysanthemum cinerariaefolium flowers. They have been employed agriculture, home and veterinary formulations to control insect vectors of disease, agricultural insects topically applied eradicate pests. The extensive use pyrethroids agriculture re...

The study aimed to identify the differentially expressed nigrostriatal proteins in cypermethrin-induced neurodegeneration and to investigate the role of microglial activation therein. Proteomic approaches were used to identify the differentially expressed proteins. Microglial activation, tyrosine hydroxylase immunoreactivity (TH-IR), dopamine content, and neurobehavioral changes were measured a...

The experiment was conducted to study the effectiveness of four commonly used chemicals viz., deltamethrin, cypermethrin, malathion and sulphur against two-spotted spider mite (TSSM), Tetranychus urticae Koch on potted bean plants and on excised leaf discs. Mite population remained significantly lower in all treated plots except malathion treatment. The population of T. urticae differed signifi...

In this study, soil and sediment samples from known sources (sewage treatment plants, chicken farms, paddy fields and palm oil plantations) were analyzed for selected organic compounds (polycyclic aromatic hydrocarbons (PAHs), chlorpyrifos, cypermethrin and sterols). Samples were extracted using pressurized liquid extraction (PLE) techniques. The data sets obtained were subjected to chemometric...

Present study was undertaken to study the effect of cypermethrin on oxidative stress after chronic dermal application. The insecticide was applied dermally at 50 mg/kg body weight in different groups of Wistar rats of either sex weighing 150-200 g. Significant (p < 0.05) increase in catalase activity was observed after 30 days of exposure. However, the superoxide dismutase activity declined sig...

Egg strings and nauplii of the salmon louse Lepeophtheirus salmonis were exposed to a variety of medicinal compounds at 50 mg L(-1) for 30 min in two experiment series. This medicine concentration was selected as a starting point for a screening series. Hatching of egg strings and development to copepodid larvae were monitored in one experiment, and the survival and development of nauplii were ...

The egg-larval parasitoid Chelonus insularis Cresson is a key parasitoid of the fall armyworm Spodoptera frugiperda (J. E. Smith) during the second fi eld generation in the upper Magdalena River Basin, Colombia. In spite of selection pressure, the higher susceptibility of the second generation fall armyworm larvae to insecticides, compared with that of the fi rst generation, suggests that the p...

In this study, Channa punctatus was treated with sub-lethal concentration of cypermethrin (6.6 μg/L) for 5, 10 and 15 days and its effect on total CYP 450 and the activity of hepatic CYP450 isoforms measured. Total CYP450 content and CYP1A mediated EROD activity was significantly induced (p<0.05) in all three treated groups compared to control whereas only 15 days treated group showed significa...

The evaluation of the efficacy of three commonly used acaricides viz. cypermethrin, deltamethrin (0.05, 0.1 and 0.2% concentrations) and amitraz (0.1, 0.2 and 0.3% concentrations) was conducted against the cattle tick Boophilus microplus. Three in vitro methods viz. Tea bag method, filter paper impregnation method and immersion method were used to evaluate the efficacy of the acaricides. Adult ...