نتایج جستجو برای: anacyclus pyrethrum

تعداد نتایج: 308  

2013
Fekadu Massebo Meshesha Balkew Teshome Gebre-Michael Bernt Lindtjørn

We collected anophelines every second week for one year from randomly selected houses in southwestern Ethiopia by using Centers for Disease Control (CDC) light traps, pyrethrum spray catches, and artificial pit shelter constructions to detect circumsporozoite proteins and estimate entomologic inoculation rates (EIRs). Of 3,678 Anopheles arabiensis tested for circumsporozoite proteins, 11 were p...

Journal: :Annales de parasitologie humaine et comparee 1986
M Maroli A M Fausto G Sabatinelli G Majori

A total of 1,394 sandflies were collected in the domestic resting sites of Ouagadougou areas and in two villages of the East region of Burkina Faso using pyrethrum spray catch, oiled papers and miniature CDC light traps during the rainy season in 1984 and 1985. Thirteen species were identified, one belonging to the genus Phlebotomus and the others to the genus Sergentomyia. S. antennata (34.94%...

Journal: :Tanzania journal of health research 2008
E J Kweka A M Mahande W M M Nkya C Assenga E E Lyatuu E Nyale F W Mosha S B Mwakalinga E A Temu

Entomological surveys were conducted in Mkuzi village in Muheza District, north-east Tanzania from April to September 2003. The objectives were to determine the species composition and infectivity rates of mosquitoes in Mkuzi village. Mosquito collection was done using CDC light trap and pyrethrum spray catch (PSC) techniques. The light trap: spray catch ratio was 2.2:1. A total of 2157 mosquit...

Journal: :The Plant cell 2012
Aldana M Ramirez Geert Stoopen Tila R Menzel Rieta Gols Harro J Bouwmeester Marcel Dicke Maarten A Jongsma

Glandular trichomes are currently known only to store mono- and sesquiterpene compounds in the subcuticular cavity just above the apical cells of trichomes or emit them into the headspace. We demonstrate that basipetal secretions can also occur, by addressing the organization of the biosynthesis and storage of pyrethrins in pyrethrum (Tanacetum cinerariifolium) flowers. Pyrethrum produces a div...

2014
A. Gökçe L. L. Stelinski D. R. Nortman W. W. Bryan M. E. Whalon

Behavioral and electroantennogram responses of plum curculio, Conotrachelus nenuphar (Herbst) (Coleoptera: Curculionidae), adults were tested for several methanolic plant extracts and organically approved insecticides. Plant extracts were evaluated for their potential as antifeedants or oviposition deterrents. These extract responses were also compared to those elicited by the non-neurotoxic, o...

2003
H. K. Kiriamiti S. Camy C. Gourdon

Extractions of pyrethrins from ground pyrethrum flowers, using supercritical carbon dioxide as the solvent, were carried out in a semi-batch pilot plant (extraction volume: 200 ml). Extracts were very similar to those obtained by hexane Soxhlet extraction, except that the ratio of pyrethrins I to pyrethrins II was lower (1.58 instead of 1.79), and less pigments were present. At 40 8C, the amoun...

Journal: :Journal of Plant Protection Research 2014

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