abstract in a laboratory study the effect of three insecticides (pirimicarb, pymetrozine and spinosad) was evaluated on aphelinus mali a parasitoid of woolly apple aphid. to investigate the contact effect, adults were caged for 16 hours in petri-dishes containing apple leaves sprayed with each insecticide. to determine the oral toxicity in the same period of time, other petri-dishes containing ...

The psyllid Bactericera cockerelli (Sulc) (Hemiptera: Psyllidae) is the vector of a bacterial pathogen causing zebra chip (ZC) disease in potato, Solanum tuberosum L. (Solanaceae). Recently, ZC has become important to potato growers and the potato chipping industry in the southwestern United States, Mexico, Central America, and New Zealand. In the current study, we evaluated the knockdown effec...

Tetranychus urticae is one of the most important pests of strawberry cultures in Morocco. Current control of this pest relies almost exclusively on acaricides. Unfortunately, this mite has developed resistance to most of the available acaricides. Moreover, insecticide treatments are responsible for the reduction or suppression of beneficial species such as natural predators. Thus, identificatio...

BACKGROUND This study was performed to investigate the efficacy of a morantel-abamectin combination for the treatment of macrocyclic lactone (ML)-resistant Parascaris spp. infections in foals. METHODS Foals on five properties with a Parascaris faecal egg count (FEC) > 50 eggs per gram were used to estimate the FEC reduction (FECR) and efficacy of the anthelmintic combination. RESULTS & CONC...

Baseline susceptibility to abamectin in thirty-four Colorado potato beetle (CPB) populations was determined by diet-incorporated assays. Also, filter-paper exposure assays quantified esfenvalerate and azinphosmethyl resistance. LC50 values ranged from 0.09 to 2.69 ppm abamectin and differed by 9fold in 1993 and 21-fold in 1994. Based on the composite response of this assay, the predicted LC50, ...

The renal- and hepato-toxicity induced by abamectin pesticide (Vertimec) and a commercial form of a bio-insecticide Bacillus thuringiensis (Agerin) in male albino rats were evaluated. Blood picture and blood glucose level were investigated. Male albino rats were administered dietary doses each equivalent to 1/10 or 1/100 of the LD50 values of each toxicant for 30 consecutive days. Abamectin was...

The title compound, C10H11N5O {systematic name: 6-methyl-4-[(E)-(pyridin-3-yl-methyl-idene)amino]-4,5-di-hydro-1,2,4-triazin-3(2H)-one}, C10H11N5O, is used as an anti-feedant in pest control. The asymmetric unit comprises two independent mol-ecules, A and B, in which the dihedral angles between the pyridinyl and triazinyl ring planes [r.m.s. deviations = 0.0132 and 0.0255 ] are 11.60 (6) and 18...

Evolution of pest resistance reduces the efficacy of insecticidal proteins from the gram-positive bacterium Bacillus thuringiensis (Bt) used widely in sprays and transgenic crops. Recent efforts to delay pest adaptation to Bt crops focus primarily on combinations of two or more Bt toxins that kill the same pest, but this approach is often compromised because resistance to one Bt toxin causes cr...

J. Econ.Entomol.89(1): 33-38 (1996) ABSTRACT The susceptibility of diamondback moth, Plutella xylostella (L.), larvae to 2 avermectins, abamectin and MK-243 (4"-epi-methylamino-4"deoxyavermectinBI hydrochloride), was assessed through toxicityevaluations of 17-19 geographicallydiverse populations. Both avennectins were very potent to 3rd-instar diamondbackmoth; LC50s for abamectin and MK-243 ran...