Studies were undertaken to determine the adsorption behavior of α-cypermethrin [R)-α-cyano-3-phenoxybenzyl(1S)-cis3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, and (S)-α-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dichlorovinyl)-2,2dimethylcyclopropanecarboxylate] in solutions on granules of cork and activated carbon (GAC). The adsorption studies were carried out using a batch equilibriu...

Pyrethroids play an important role in modern agriculture but their use is not without risks to non-target organisms and habitats. They have high toxicity to a broad spectrum of aquatic organisms. The aim of the study was to investigate the effect of low concentration (0.02 μg l(-1)) of two widely used pyrethroids--cypermethrin and deltamethrin on phyto- and zooplankton. The acute bioassays were...

Eleven large-plot trials were located across nine counties in eastern Arkansas to evaluate the efficacy of select insecticides on the rice stink bug. Lambda-cyhalothrin, zeta-cypermethrin, methyl parathion, and carbaryl achieved initial control. However, only lambda-cyhalothrin and zeta-cypermethrin maintained significantly lower counts of the rice stink bug at 14 days after treatment (DAT). La...

Alpha-cypermethrin is a synthetic pyrethroid insecticide used to control pests in domestic, industrial and agricultural situations. Adult male guppy fish (Poecilia reticulata standard test species) were selected for the bioassay experiments. The experiments were performed in four series and the 96-h LC50 value was determined for guppies. The acute toxicity experiments were carried out by static...

We investigated the changes in total body weight, glycogen, protein, and lipid contents of the endoparasitoid Pimpla turionellae L. (Hymenoptera : Ichneumonidae) reared on Galleria mellonella L. (Lepidoptera : Pyralidae) exposed to various sublethal doses of cypermethrin added to the food of host larvae. Cypermethrin affected the total body weight of larvae, pupae, and adult females but not mal...

Background:This study aimed to investigate changes in calcitonin cells (C cells) and parathyroid glands (PTG) induced by cypermethrin exposure in rats and evaluate the protective effects of jamun seeds (Syzygium cumini; JSE) and orange peels (Citrus sinensis; OPE) extracts. Methods:Wistar rats (N=120) were treated in groups of 20 each as: Group A: Controls; Group B: cypermethrin (CY); Group C:...

This study was conducted to investigate the effects of dietary black cumin (Nigella sativa L.) oil on growth performance, hemato-biochemical, and histopathology cypermethrin-intoxicated Nile tilapia. After determining LC50 (96 h) value cypermethrin, cypermethrin added water at a ratio 1:20 this concentration, fish were fed for 42 days. To reduce 1% feed as potential protectant. Growth parameter...

Background Pyrethroids are commonly used as insecticides for both household and agricultural applications, and have recently been linked to endocrine disruption. Cypermethrin is a type П pyrethroid which is used widely throughout the world. The present study was aimed to investigate the effects of cypermethrin on the sexual behaviour and plasma level of pituitary-gonadal hormones of adult male ...

Acaricidal resistance studies were carried out Department of Veterinary Parasitology in Udaipur to detect status against commonly used commercial acaricides, 1.25% Butox® (Deltamethrin) and 10% w/v DERMEEZ® (Cypermethrin) ticks collected from three villages (Vallabhnagar, Ranchorpura Kikawas) Udaipur, Rajasthan using Adult Immersion test (AIT) Larval packet (LPT). Recommended concentration acar...

Cotton bollworm, Helicoverpa armigera (Hübner) is one of the most destructive insect pests on many crops in the world that has been found to develop resistance against conventional insecticides. Using insecticides with different modes of action may result in appropriate control of the pest and delay insecticide resistance development. In this study, lethal and sublethal effects of emamectin ben...