Results 181 to 190 of about 9,842 (206)

Larvicidal Constituents ofMelantheria albinervia

Planta Medica, 1995
Bioactivity-guided fractionation has led to the isolation of two larvicidal diterpenes, active against the yellow fever-transmitting mosquito Aedes aegypti, from a dichloromethane root extract of Melantheria albinervia (Asteraceae), a plant from Zimbabwe. These diterpenes were identified as ent-kaur-16-en-19-oic acid and 9(11),16-kauradien-19-oic acid.
R, Slimestad, A, Marston, S, Mavi, K, Hostettmann   +3 more
openaire   +2 more sources

Larvicidal Diterpenes from Pterodon polygalaeflorus

Vector-Borne and Zoonotic Diseases, 2006
Ethanolic extract from seeds of Pterodon polygalaeflorus (Benth) has been shown to possess significant larvicidal activity against the mosquito Aedes aegypti. Bioassay-guided fractionation of the extract led to the isolation and characterization of the know diterpenoid furans 6alpha-hydroxyvouacapan-7beta,17beta-lactone (1), 6alpha,7beta ...
M C, De Omena, E S, Bento, J E, De Paula, A E G, Sant'Ana   +3 more
openaire   +2 more sources

Tests (1967) with Black Fly Larvicides

Journal of Economic Entomology, 1968
Four pesticides were tested near Ithaca, New York, against larvae of the black fly, Simulium pictipes Hagen. The 4 were, Abate® (O,O -dimethyl phosphorothioate O,O -diester with 4,4'thiodiphenol), Dursban® (O,O -diethyl O- (3,5,6-trichloro-2-pyridyl) phosphorothioate), ronnel.
B V, Travis, S M, Schuchman
openaire   +2 more sources

Bacteriological larvicides of dipteran disease vectors

Trends in Parasitology, 2001
The apparent success in vector control observed between 1950 and 1970 was followed by worldwide resistance to organosynthetic insecticides wherever they were used intensively. Insect resistance to one or more categories of insecticides has limited the effectiveness of these compounds, and their non-selective mode of action adversely affects non-target ...
L, Regis, M H, Silva-Filha, C, Nielsen-LeRoux, J F, Charles   +3 more
openaire   +2 more sources

Effect of Larvicides on Simulium Eggs

Nature, 1969
Simulium, the biting pest and vector of human onchocerciasis, is best controlled by the regular use of larvicides—DDT in particular—in the streams and rivers in which the immature stages develop1. The speed of reinfestation after the application of larvicide suggests that Simulium eggs are not affected by the doses usually applied2.
R C, Muirhead-Thomson, J, Merryweather
openaire   +2 more sources

Mosquito oils and larvicides.

1941
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

DDT as mosquito larvicide.

1945
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Larvicides

Journal of the Royal Army Medical Corps, 1920
J. F. Mayne, W. R. Jackson
openaire   +1 more source

Mineral Oils as Mosquito Larvicides.

Bulletin of Entomological Research, 1936
Oil has been used as a mosquito larvicide for about forty years, since L. O. Howard in 1892 first recommended its use, and a large literature has accumulated on the subject, but the physical and chemical properties which make an oil a suitable material for this work are very imperfectly understood.
openaire   +1 more source

Larvicidal aerosols containing DDT.

1945
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source