The influence of post-treatment temperature on the toxicities of two pyrethroids (lambda-cyhalothrin and bifenthrin), a carbamate (methomyl) and a spinosyn (spinosad) to Ostrinia nubilalis (Hubner) larvae was evaluated in laboratory assays. From 24 to 35 degrees C, the toxicities of the pyrethroids decreased 9.5- and 13.6-fold while spinosad toxicity decreased 3.8-fold. The toxicity of methomyl...

In this work we investigated the inhibitory effect of Deltamethrin, Dichlorvos, Malathion and Lambdacyhalothrin on bovine liver catalase (CAT) activity. We observed that the inhibition of enzyme increased with increasing concentrations of the pesticides from 0 to 250 ppm. The Kinetics conformed to the MichaelisMenten model and a Lineweaver-Burk graph of CAT was drawn. To identify the inhibition...

Haemaphysalis longicornis Neumann is an invasive tick species that has recently been detected in the eastern United States. We designed field studies to monitor population dynamics of H. over a year (2019) New Jersey, and assess efficacy pyrethroid acaricide (lambda-cyhalothrin) controlling this using stage-treatment approach. Nymphs were most abundant life stage found host-seeking from May thr...

ecology of anopheles dthali was studied in bandar abbas county, where there is indigenous malaria. anopheles dthali plays as a secondary malaria vector in the region. it is active throughout the year in mountainous area with two peaks of activity, whereas in coastal area it has one peak. there is no report of hibernation or aestivation for this species in the re gion. precipitin tests on specim...

the house fly, musca domestica l., is known as one of the most important hygiene problems worldwide. it has shown a high potential to develop resistance to chemical insecticides. this study was undertaken to determine the susceptibility or resistance of the house fly, which were collected from 3 livestock farms near the city of ahvaz, to prevalent pyrethroid insecticides (delthamethrin, lambda-...

Pyrethroid resistance in the lepidopteran insects has caused an influx of new non-pyrethroid based compounds. One such compound is Diamond® .83 EC (novaluron), an insect growth regulator. This is a newly available compound sold as Diamond. The purpose of this experiment was to test the effectiveness of Diamond with respect to a standard of spinosad (Tracer® 4 L) and cyhalothrin (Karate Z® 2.08 ...

Experiments were carried out on the toxicity of selected insecticides and fungicides to the predatory mites species: Amblyseius swirskii, A. andersoni, and Phytoseiulus persimilis. Among the tested active substances: abamectin, hexytiazox, and spinosad were safe to the predators. The mortality level of the tested predator was comparable to the control treatment, seven days after application. Th...