نتایج جستجو برای: larvicidal effect
تعداد نتایج: 1642930 فیلتر نتایج به سال:
Introduction: Aedes mosquitoes are responsible for transmitting various life-threatening diseases all over the world and created a burden to society. Control of mosquito vectors is key challenge avoid disease transmission. In this regard, present work focused utilize agronomical waste Solanum lycopersicum leaf extracts evaluate larvicidal activity against aegypti.
 Methods: The qualitative...
Background: Mosquitoes are responsible for the transmission of many pathogens and parasites and consequently serious diseases in humans. Currently, application of plant derivatives has been suggested as an alternative bio-control technique for these medically important vectors. Methods: In this study the essential oil and methanol extract of Achilleaw...
The larvicidal activities to determine the efficacies of acetone, ethyl acetate, chloroform and butanol dried leaf extracts of Annona squamosa, Cynodon dactylon, Melia azedarach and root extract of Hemidesmus indicus tested against 3 instar Culex quinquefasciatus and Aedes aegypti. The highest larvae mortality was found in the acetone followed by ethyl acetate, chloroform and butanol extract of...
Many naturally occurring and synthetic compounds containing dihydrocyanopyridine and cyanopyran moiety show pharmacological properties. The aim of this study is to investigate the larvicidal and antioxidant potential of dihydrophenanthroline-3-carbonitrile derivatives 4a-f. A novel series of 2-amino-10-chloro-4,12-diphenyl-1,4,5,6-tetrahydrobenzo[j][1,7]phenanthroline-3-carbonitrile derivatives...
Oil-resin fractions from Copaifera reticulata Ducke (Leguminosae-Caesalpinoideae) were evaluated for larvicidal activity on third larval instars of Aedes aegypti, in searching for alternative control methods for this mosquito. The bioactive fractions were chemically monitored by thinlayer chromatography, H and C nuclear magnetic resonance and mass spectrometry. Bioassays were performed using fi...
Methanol extracts of different plants namely, Trichodesma africanum (Boraginaceae), Cleome rupicola (Capparceae) and Ochradenus baccatus (Resedaceae), were tested for larvicidal activity against 4 instar larvae of Aedes caspius and Culex pipiens mosquitoes. All plant extracts tested against Ae. caspius showed 100% mortality at 10μg/ml except the stem of O. baccatus which showed 90% mortality. H...
Bacillus sphaericus produces mosquito-larvicidal binary toxin composed of BinA and BinB. While BinB is expected to bind to a specific receptor on the cell membrane, BinA interacts to BinB or BinB receptor complex and translocates into the cytosol to exert its activity via unknown mechanism. To investigate functional roles of aromatic cluster in BinA, amino acids at positions Y213, Y214, Y215, W...
Aedes aegypti L. is the major vector of dengue fever, an endemic disease in Brazil. In an effort to find effective and affordable ways to control this mosquito, the larvicidal activities of essential oils from nine plants widely found in the Northeast of Brazil were analyzed by measurement of their LC50. The essential oils were extracted by steam distillation and their chemical composition dete...
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