نتایج جستجو برای: larvicidal activity

تعداد نتایج: 1134975  

2013
Levon S. Markosyan Narine S. Vardanyan

Five original strains of entomopathogenic bacteria with insecticidal activity against mosquito larvae of the genera Aedes, Culex and Anopheles have been isolated from natural conditions in Armenia and characterized. According to morphological, physiological and biochemical parameters, all isolates were identified as Bacillus thuringiensis spp. israelensis (Bti). High larvicidal activity has bee...

Journal: :IOP Conference Series: Earth and Environmental Science 2020

Journal: :International Journal of Bioscience, Biochemistry and Bioinformatics 2016

Journal: :Revista Facultad Nacional de Agronomía 2021

Aedes aegypti L. is the mosquito vector of yellow fever, dengue, zika, and chikungunya viruses. The prevention control such diseases usually rely on use chemicals, that can cause harm to human health environment. Vegetable oils with larvicidal activity are used as an alternative tool this insect. This study aimed evaluate vegetable from Caryocar coriaceum, Mauritia fIexuosa, Carapa guianensis, ...

2014
Venugopala K. Narayanaswamy Raquel M. Gleiser Kabange Kasumbwe Bandar E. Aldhubiab Mahesh V. Attimarad Bharti Odhav

Mosquitoes are the major vectors of parasites and pathogens affecting humans and domestic animals. The widespread development of insecticide resistance and negative environmental effects of most synthetic compounds support an interest in finding and developing alternative products against mosquitoes. Natural coumarins and synthetic coumarin analogues are known for their several pharmacological ...

Journal: :Annual review of entomology 1996
J F Charles C Nielson-LeRoux A Delécluse

Bacillus sphaericus is a spore-forming aerobic bacterium, several strains of which are pathogenic for mosquito larvae. During sporulation, the most active strains produce a crystal toxin with a high degree of larvicidal activity. The toxin is composed of two proteins of 51.4 and 41.9 kDa, which are encoded by highly conserved chromosomal genes. After B. sphaericus is ingested, these proteins ar...

Journal: :Journal of vector borne diseases 2014
M Syed Ali S Ravikumar J Margaret Beula V Anuradha N Yogananth

BACKGROUND & OBJECTIVES Mosquito control is facing a threat due to the emergence of resistance to synthetic insecticides. Insecticides of botanical origin could serve as potential alternatives in future. Larvicidal efficacies of different parts of mangrove plants belonging to Rhizophoraceae family were tested against the late IV instar larvae of dengue vector, Aedes aegypti. METHODS Different...

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