BACKGROUND & OBJECTIVES Development of insecticide resistance in malaria vectors has been a major problem for achieving effective vector control. Due to limited availability of insecticides, the only option is management of resistance by judiciously using the insecticides and rotating them to maintain their effectiveness. This study was carried out in a malaria endemic area of Sundergarh distri...

The cotton bollworm Helicoverpa armigera occurs as a major pest in many economically important crops, including cotton, pigeon pea, chickpea, cowpea, sunflower, tomato, sorghum, pearl millet and other crops. Intestinal microorganisms play role the degradation of diet components insects. In order to know gut bacteria insecticide resistance five insecticides Chlorpyriphos (20% EC), Cypermethrin (...

objective(s): in this study the effect of crocin, a carotenoid isolated from saffron, on malathion (an organophosphate insecticide) induced depressive- like behavior in subacute exposure was investigated. moreover the molecular mechanism of malathion induced depressive- like behavior and its decreasing effect on the level of brain derived neurotrophic factor (bdnf) in rat hippocampus and cerebr...

Plague is a rodent disease transmissible to humans by infected flea bites, and Madagascar is one of the countries with the highest plague incidence in the world. This study reports the susceptibility of the main plague vector Xenopsylla cheopis to 12 different insecticides belonging to 4 insecticide families (carbamates, organophosphates, pyrethroids and organochlorines). Eight populations from...

Culex tritaeniorhynchus Giles and Cx. gelidus Theobald (Diptera: Culicidae), both vectors of Japanese encephalitis, were collected in 1984 and 1998 from two disease endemic localities in Sri Lanka: Anaradhapura and Kandy. Using wild-caught adult mosquitoes from light traps, log dosage-probit mortality curves for insecticide bioassays were obtained for three insecticides: malathion (organophosph...

anopheles stephensi is an important malaria vector in southern iran. this species developed resistance to ddt in 1975 and subsequently to dieldrin in 1960. since 1968 this species has been under pressure of malathin house sprayin. 50% w.d.p. , 2g/m2, 1-2 rounds per year. susceptibility tests carried out with malathion impregnated papers during 1979 showed that an.stephensi has acquired resistan...

susceptibility of two wild strains of an. stepliens, collected from kazeroun (st-k.az and bandar-abbas (st-ban), south of iran was compared to fenthion, malathion, temephos , pirimiphos, methyk, deltamethrth, ddt dimilin and etopenprox as larvicides in the laboratory. susceptibility test on the st-kaz strain indicated that this strain is susceptible to the named insecticides i.e. the resistance...

Since urinary insecticide metabolites are commonly used as biomarkers of exposure, it is important that we quantify whether insecticides degrade in food and beverages in order to better perform risk assessment. This study was designed to quantify degradation of organophosphorus and pyrethroid insecticides in beverages. Purified water, white grape juice, orange juice, and red wine were fortified...

Since the reintroduction of Aedes aegypti in Brazil in the 1980s, insecticide use for its control is routine. The chemical control efficacy is threatened by vectors developing resistance to insecticides. The World Health Organization, recognizing the impact of insecticide resistance in vector control programmes, proposed standardizing bioassays for detecting and monitoring resistance using a di...

Fruit flies (Diptera: Tephritidae) are among the most economically important pest species in the world, attacking a wide range of fruits and fleshy vegetables throughout tropical and sub-tropical areas. These species are such devastating crop pests that major control and eradication programs have been developed in various parts of the world to combat them. The array of control methods includes ...