نتایج جستجو برای: avermectin
تعداد نتایج: 247 فیلتر نتایج به سال:
INTRODUCTION This study aimed to assess the susceptibility of Culex quinquefasciatus larvae to two pyrethroids (Cypermethrin and Deltamethrin), two derivatives of Avermectin (Ivermectin and Abamectin) and an organophosphate (Temephos). METHODS Third- and fourth-instar larvae of C. quinquefasciatus were exposed to different concentrations of insecticides (eleven repetitions) according to the W...
The maximum yield for the production of L-681,110 by Streptomyces sp. MA-5038 (ATCC 31587) was observed after 5 days' incubation at 28 degrees C and pH about 8.3. L-681,110 was isolated from the fermentation broth by acetone extraction of the mycelia, absorption to Amberlite XAD-2 resin and two separations by thin-layer chromatography. The structure of L-681,110 was found to consist of a sixtee...
This study examined the larvicidal effect of trunk-injected abamectin and emamectin benzoate against walnut husk fly (Rhagoletis completa Cresson, 1929). Walnut trees in two locations years were injected with pesticides at different concentrations. For toxicokinetic studies, active ingredient content was measured leaves, flowers, husks, kernels, using a UHPLC-MS/MS analytical method. The infest...
Selamectin, a novel avermectin compound, is reviewed and discussed for its efficacy against naturally occurring infestations and infections of Ctenocephalides felis, Otodectes cynotis, and Dirofilaria immitis in ferrets; different flea species, Psoroptes cuniculi, Cheyletiella spp, and Leporacarus gibbus in rabbits; different chewing lice, Trixacarus caviae, and Chirodiscoides caviae in guinea ...
Type I modular polyketide synthases are responsible for potent therapeutic compounds that include avermectin (antihelinthic), rapamycin (immunosuppressant), pikromycin (antibiotic), and erythromycin (antibiotic). However, compound access and biosynthetic manipulation are often complicated by properties of native production organisms, prompting an approach (termed heterologous biosynthesis) illu...
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