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A screening method for natural products on triatomine-bugs.

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dc.rights.license John Wiley & Sons Ltd
dc.contributor.author Rojas de Arias, Gladys Antonieta
dc.contributor.author Schmeda-Hirschmann, Guillermo
dc.date.accessioned 2019-12-21T19:55:59Z
dc.date.available 2019-12-21T19:55:59Z
dc.date.issued 1992
dc.identifier.issn ISSN online 1099-1573
dc.identifier.uri http://dspace.conacyt.gov.py/xmlui/handle/123456789/42304
dc.description.abstract A simple method for screening natural products on triatomine bugs, vectors of Chagas' disease, was developed using fourth instar Rhodnius neglectus nymphs as an insect model. The statistical method of randomized blocks and randomized blocks with a dichotomous variable were compared and the minimum sample size for screening purposes was established. Tests were made on 94 plant extracts from 49 species, 28 of which are traditionally regarded as having some effect on arthropods or parasitic helminths. 50 μg of crude hexane or ethanol extract was topically applied to each insect. The effect on mortality and moulting was assessed. Ten plant species caused an increased mortality (16.0% to 52.3%) compared with untreated controls. Moulting inhibition ranged from 22.2% to 33.3% and was related to insecticidal effect in most cases. Extracts from two Meliaceae plants belonging to the genera Melia and Cabralea were among the most active tested, causing 32.5% and 45% mortality, respectively. Extracts from a Salvia species killed 52.3% of the bugs. Ten of the 13 plants showing activity are used by the rural population in various parts of Latin America for arthropod control or as vermifuges. en
dc.format application/pdf
dc.language en
dc.relation.uri http://dspace.conacyt.gov.py/jspui/bitstream/123456789/42304/1/1992 a screening method for natural products on triatomine-bugs.pdf
dc.source Phytotherapy Research
dc.subject Triatomine bugs
dc.subject Screening methods
dc.subject Melia
dc.subject Cabralea
dc.subject Salvia
dc.subject Insecticidal properties
dc.subject Ethnobotany
dc.subject Plant extracts
dc.title A screening method for natural products on triatomine-bugs.
dc.type Artículo
dcterms.bibliographicCitation Phytotherapy Research 6([S.N]), 96 - 73. 1992
dc.contributor.identifier 1261551
dc.identifier.doi 10.1002/ptr.2650060204
dc.source.pages 96 - 73
dc.source.volume 6

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