Results 221 to 230 of about 11,157,745 (269)

Quantitative structure-activity relationships of benzoylphenylurea larvicides

Pesticide Biochemistry and Physiology, 1991
Abstract The larvicidal activity of benzoylphenylureas with various multiple substitution patterns at the anilide moiety including chlorfluazuron and teflubenzuron was estimated against the rice stem borer, Chilo suppressalis , under conditions in which the oxidative metabolism was eliminated as far as possible by using piperonyl butoxide.
Yoshiaki Nakagawa, Keiichi Izumi, Nobuhiro Oikawa, Akira Kurozumi, Hajime Iwamura, Toshio Fujita   +5 more
openaire   +1 more source

Utilization of gum polysaccharide ofAraucaria heterophyllaandAzadirachta indica for encapsulation of cyfluthrin loaded super paramagnetic iron oxide nanoparticles for mosquito larvicidal activity.

International Journal of Biological Macromolecules, 2019
Surface engineering of super paramagnetic iron oxide nanoparticles (SPIONs) favor the tagging of any molecule or compound onto it, encapsulating them with a biopolymer make them biocompatible and favor slow release of loaded molecules. Recovery of SPIONs
Antony V Samrot, Karanam Sai Bhavya, Lavanya Agnes Angalene J, Roshini Sm, P. R., Steffi Sm, R. P, S. Kumar S   +7 more
semanticscholar   +1 more source

Larvicidal activity of chemically synthesized silver nanoparticles against Anopheles stephensi

Journal of Pharmaceutical Negative Results, 2019
Background: Silver nanoparticles (AgNPs) have wide applications in different fields such as medicine, food industry, and pest management. Larvicidal activity of many herbally biosynthesized AgNPs have been evaluated against main malaria vector, that is ...
M. Osanloo, S. Amini, M. Sedaghat, A. Amani   +3 more
semanticscholar   +1 more source

Quantitative structure-activity studies of benzoylphenylurea larvicides

Pesticide Biochemistry and Physiology, 1992
Abstract The inhibition by N-(2,6-disubstituted benzoyl)-N′-(4-substituted phenyl)urea larvicides of the incorporation of N-acetyl-[1-14C]glucosamine, the precursor of chitin, into cultured fragments of the integument of Chilo suppressalis Walker larvae was measured in terms of the median inhibitory concentration with and without metabolic inhibitors.
Yoshiaki Nakagawa, Michiko Matsutani, Norio Kurihara, Keiichiro Nishimura, Toshio Fujita   +4 more
openaire   +1 more source

Larvicidal activity of Cybistax antisyphilitica against Aedes aegypti larvae

Fitoterapia, 2005
The larvicidal activity against Aedes aegypti larvae of a stem wood hexane extract of Cybistax antisyphilitica was evaluated. Bioassay-guided fractionation of the crude extract, monitored by larvicidal assay, led to the isolation of a natural quinone identified as 2-hydroxy-3-(3-methyl-2-butenyl)-1.4-naphthoquinone (lapachol).
A M S, Rodrigues, J E, de Paula, F, Roblot, A, Fournet, L S, Espíndola   +4 more
openaire   +2 more sources

Synthesis and larvicidal activity of indole derivatives against Aedes aegypti (Diptera: Culicidae)

Journal of applied entomology, 2019
In light of the challenges to control Aedes aegypti and the critical role that it plays as arbovirus vector, it is imperative to adopt strategies that provide fast, efficient and environmentally safe control of the insect population. In the present study,
Janaina R. Sousa, F. A. Silva, Sabrina Targanski, B. R. Fazolo, J. M. Souza, Mateus Campos, L. Vieira, T. A. Oliveira Mendes, M. Soares   +8 more
semanticscholar   +1 more source

Solvatochromic behaviour and larvicidal activity of acridine-3-carboxylates

Journal of Photochemistry and Photobiology B: Biology, 2014
A new series of substituted ethyl 10-chloro-4-(3,4-dimethoxyphenyl)-2-hydroxy-12-phenyl-1,4,5,6-tetrahydrobenzo[a]acridine-3-carboxylates, 3a-e have been synthesized through NaOH base mediated cyclocondensation of (E)-7-chloro-2-(3,4-dimethoxybenzylidene)-9-phenyl-3,4-dihydroacridin-1(2H)-ones, 1a-e with ethyl acetoacetate.
A. Bharathi, Selvaraj Mohana Roopan, A. Abdul Rahuman, G. Rajakumar   +3 more
openaire   +2 more sources

Ovo-Larvicidal Activity of Selected Insecticides, 1989

Insecticide and Acaricide Tests, 1990
Abstract A small plot insecticide trial was conducted on the Northeast Research Station near St. Joseph, LA, to compare the ovicidal activity and residual toxicity of selected insecticides against Heliothis spp. on cotton. Cotton was planted on 15 Jun in plots 4 rows (40 inch centers) by 50 ft.
B. Roger Leonard, J. B. Graves, Gene Burris   +2 more
openaire   +1 more source

Phytocompounds for mosquito larvicidal activity and their modes of action: A review

South African Journal of Botany, 2023
P. Ganesan, Rajan Samuel, S. Mutheeswaran, P. Pandikumar, A. D. Reegan, A. Aremu, S. Ignacimuthu   +6 more
semanticscholar   +1 more source

Enzymatic activation of the Bacillus sphaericus mosquito larvicidal toxin

Journal of Invertebrate Pathology, 1987
Bacillus sphaericus insecticidal toxin was activated by trypsin, α-chymotrypsin, and mosquito gut homogenates to a form which was cytotoxic to cultured mosquito cells. Gut extracts from highly resistant Aedes aegypti larvae were as effective in activating this toxin as extracts from the highly sensitive species Culex quinquefasciatus.
E W, Davidson, A L, Bieber, M, Meyer, C, Shellabarger   +3 more
openaire   +2 more sources