Antifeedant activity of botanical crude extracts and their fractions on Bemisia tabaci (Homoptera: Aleyrodidae) adults: I. Gliricidia sepium (Fabaceae)

Flores, Guillermo; Hilje Quirós, Luko; Mora, Gerardo A.; Carballo, Manuel

dc.creator	Flores, Guillermo
dc.creator	Hilje Quirós, Luko
dc.creator	Mora, Gerardo A.
dc.creator	Carballo, Manuel
dc.date	2007-11-08
dc.date.accessioned	2016-05-03T15:30:23Z
dc.date.available	2016-05-03T15:30:23Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/rbt/article/view/5782
dc.identifier	10.15517/rbt.v56i4.5782
dc.identifier.uri	https://hdl.handle.net/10669/26839
dc.description	Bemisia tabaci is an important virus vector on a number of crops worldwide. Therefore, a preventive approach to deal with viral epidemics may be the deployment of repellents or phagodeterrents at earlier stages of plant development (critical period). Thus, the crude extract and four fractions thereof (water, water:methanol, methanol, and diethyl ether) of mother-of-cocoa (Gliricidia sepium, Fabaceae) were tested for phagodeterrence to B. tabaci adults under greenhouse conditions, on tomato plants, in Costa Rica. Both restricted-choice and unrestricted-choice experiments showed that the crude extract and some fractions exerted such effect on the insect. In the former (in sleeve cages), three fractions caused deterrence at doses as low as 0.1% (methanol), 0.5% (water:methanol) and 1.5% (diethyl ether). However, in the latter (plants exposed in a greenhouse) no one of the fractions performed well, suggesting that the deterrent principles somehow decomposed under the experimental conditions.	en-US
dc.format	application/pdf
dc.language	eng
dc.publisher	Universidad de Costa Rica	en
dc.rights	Copyright (c) 2014 International Journal of Tropical Biology and Conservation	en
dc.source	Revista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 56 (4) December 2008	es-ES
dc.source	2215-2075
dc.source	0034-7744
dc.source	10.15517/rbt.v56i4
dc.title	Antifeedant activity of botanical crude extracts and their fractions on Bemisia tabaci (Homoptera: Aleyrodidae) adults: I. Gliricidia sepium (Fabaceae)	en
dc.type	artículo original
dc.coverage	CRC	en-US

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