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dc.contributor.author
Reynoso, Mercedes María Noel  
dc.contributor.author
Lucia, Alejandro  
dc.contributor.author
Zerba, Eduardo Nicolás  
dc.contributor.author
Alzogaray, Raúl Adolfo  
dc.date.available
2020-01-16T18:42:06Z  
dc.date.issued
2018-11  
dc.identifier.citation
Reynoso, Mercedes María Noel; Lucia, Alejandro; Zerba, Eduardo Nicolás; Alzogaray, Raúl Adolfo; Eugenol-hyperactivated nymphs of Triatoma infestans become intoxicated faster than non-hyperactivated nymphs when exposed to a permethrin-treated surface; BioMed Central; Parasites and Vectors; 11; 1; 11-2018; 573-581  
dc.identifier.issn
1756-3305  
dc.identifier.uri
http://hdl.handle.net/11336/94920  
dc.description.abstract
Background: Eugenol is a botanical monoterpene that hyperactivates the blood-sucking bug Triatoma infestans, and permethrin is a pyrethroid with a strong triatomicide effect. In the present work, we tested the hypothesis that eugenol-hyperactivated nymphs of T. infestans pick up more insecticide, and then become intoxicated faster, than non-hyperactivated nymphs when exposed to a permethrin-treated surface. Results: Values of knockdown time 50% (KT50) for third-instar T. infestans exposed to a paper impregnated with permethrin were obtained under the following situations: (a.i.) immediately after topical application of eugenol (KT50: 66.75 min for acetone pre-treated controls, and 46.27 min for eugenol pre-treated nymphs); (a.ii.) 30 min after topical application of eugenol (KT50: 66.79 min for controls, and 66.79 min for eugenol pre-treated nymphs); (b) simultaneously with exposure to eugenol vapors (KT50: 51.90 min for controls, and 39.5 min for nymphs exposed to an eugenol-treated filter paper); and (c) immediately after an injection of eugenol (on average, controls were knocked down after 63.00 min, whereas nymphs injected with eugenol were knocked down after 65.30 min). In other experimental series, the distance traveled (DT) by nymphs exposed to eugenol was quantified in the same situations previously described, but without exposure to permethrin. In (a.i.), the DT in interval 0-30 min after topical application of eugenol was 487.00 (control) and 1127.50 (eugenol) cm; in (a.ii.), the DT in the interval 31-60 min after topical application was 336.75 (control) and 256.75 (eugenol) cm; in (b), DT was 939.08 (control) and 1048.53 (eugenol) cm; and in (c), it was 589.20 (control) and 700.00 (eugenol) cm. The KT50 values for permethrin decreased significantly in situations (a.i.) and (b), and eugenol only produced a significant hyperactivity in the same situations. Finally, the amount of permethrin picked up by non-hyperactivated and hyperactivated nymphs exposed to a film of permethrin was quantified by gas chromatography. Non-hyperactivated nymphs picked up 0.34 μg/insect of permethrin, while hyperactivated nymphs picked up 0.65 μg/insect. Conclusion: Results support the hypothesis that eugenol-hyperactivated nymphs of T. infestans pick up more insecticide, and then become intoxicated faster, than non-hyperactivated nymphs when exposed to a permethrin-treated surface.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
BioMed Central  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/  
dc.subject
CHAGAS DISEASE  
dc.subject
EUGENOL  
dc.subject
HYPERACTIVITY  
dc.subject
INCREASED INTOXICATION  
dc.subject
INSECTICIDE PICK UP  
dc.subject
PERMETHRIN  
dc.subject
TRIATOMA INFESTANS  
dc.subject
TRIATOMINAE  
dc.subject.classification
Zoología, Ornitología, Entomología, Etología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Eugenol-hyperactivated nymphs of Triatoma infestans become intoxicated faster than non-hyperactivated nymphs when exposed to a permethrin-treated surface  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-10-23T14:35:37Z  
dc.journal.volume
11  
dc.journal.number
1  
dc.journal.pagination
573-581  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Reynoso, Mercedes María Noel. UNIDEF-CITEDEF-CONICET- CIPEIN; Argentina  
dc.description.fil
Fil: Lucia, Alejandro. UNIDEF-CITEDEF-CONICET- CIPEIN; Argentina  
dc.description.fil
Fil: Zerba, Eduardo Nicolás. UNIDEF-CITEDEF-CONICET- CIPEIN; Argentina  
dc.description.fil
Fil: Alzogaray, Raúl Adolfo. UNIDEF-CITEDEF-CONICET- CIPEIN; Argentina  
dc.journal.title
Parasites and Vectors  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-018-3146-4  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1186/s13071-018-3146-4