Resistance in a dual malathionand permethrin-resistant head louse strain (BR-HL) was studied. BR-HL was 3.6and 3.7-fold more resistant to malathion and permethrin, respectively, compared to insecticide-susceptible EC-HL. S,S,S-Tributylphosphorotrithioate synergized malathion toxicity by 2.1-fold but not permethrin toxicity in BR-HL. Piperonyl butoxide did not synergize malathion or permethrin t...

The heterogeneous ozonation of suspended malathion and chlorpyrifos particles are studied in real-time with a vacuum ultraviolet photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS). The pesticide particles with the diameter of hundreds of nanometers are generated by the homogeneous nucleation method using azelaic acid as nucleus. The reactions are carried out in an aerosol rea...

toxic effects of malathion and endosulfan to fertile chicken eggs were determined. in-jection of 1.25, 2.5, 5.0 and 10.0 mg/egg of malathion into yolk sac of fertile eggs prior to incubation caused mortality of 10.0, 30.0, 83.33 and 93.33% respectively. similar trend was observed with injection of endosulfan doses. malathion and endosulfan at 1.25 mg/egg caused no pronounced ld50 increase in mo...

the present study investigated the effects of acute toxicity of malathion on behavioral and haematological parameters in the cyprinid capoeta damascina . the specimens were collected from the kordan river, karaj, iran in august, 2014 and were exposed to different concentrations of malathion at the laboratory (24, 48, 72 mg l ‑1 ) based on 96h-lc (10; 30; 50; 90) which was 6.08 (5.22-7.18) mg l ...

The effect of malathion, an organophosphorus insecticide on tissue levels of acetylcholinesterase (Ache), phosphomonoesterases and transaminases have been studied in presence of different levels of dietary proteins. Adult male albino rats weighing 150-200 gms were given 5%, 10% and 20% protein diets containing 400 mg malathion (dust) 5% conc./kg feed for 30 days. Its effect was evaluated in liv...

Aedes albopictus (Skuse) and Aedes atropalpus (Coquillett) (Diptera: Culicidae) are container-dwelling mosquito species that are well established in the eastern United States. Interspecific larval competition studies have shown Ae. albopictus to be a superior competitor over many species. A laboratory experiment was conducted in artificial containers to evaluate the effects of malathion on larv...

Vapor-phase detection of the model organophosphate (OP) malathion was achieved using enzymes encapsulated in peptide nanotubes and attached to gold screen printed electrodes. The peptide nanotubes had horseradish peroxidase (HRP) encapsulated inside and both acetylthiocholine (ASCh) and acetylcholinesterase (AChE) coated on the outside. ASCh hydrolysis, which produces thiocholine, was catalyzed...

BACKGROUND & OBJECTIVES Phlebotomus argentipes is the vector for visceral leishmaniasis in India. The development of resistance in kala-azar vector to DDT has been reported from various parts of India. The main objective of this study was to generate information on insecticides susceptibility status of P. argentipes to DDT, malathion and deltamethrin in different parts in three states of India....

Malathion is an organophosphorus insecticide, which is often sprayed to control mosquitoes. When applied to aquatic habitats, malathion can also influence the embryogenesis of non-target organisms such as frogs and fish. We modified the frog embryo teratogen assay in Xenopus (FETAX), a standard toxicological assay, into an investigative undergraduate laboratory exercise. This exercise provided ...

Abstract Malathion is one of the commonly used organophosphate pesticides known to attack central nervous system, posing a risk humans and other animals upon exposure. The surface enhanced Raman spectroscopy (SERS) has been identified as an indispensable tool for chemical biomolecular sensing. In this work, facile fabrication activated carbon (AC)‐based colloidal SERS active substrate dubbed AC...