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Titolo:
DIFFERENTIAL APPLICATION OF LAMBDA-CYHALOTHRIN TO CONTROL THE SANDFLYLUTZOMYIA-LONGIPALPIS
Autore:
KELLY DW; MUSTAFA Z; DYE C;
Indirizzi:
UNIV LONDON LONDON SCH HYG & TROP MED,DEPT MED PARASITOL,VECTOR BIOL & EPIDEMIOL UNIT,KEPPEL ST LONDON WC1E 7HT ENGLAND
Titolo Testata:
Medical and veterinary entomology
fascicolo: 1, volume: 11, anno: 1997,
pagine: 13 - 24
SICI:
0269-283X(1997)11:1<13:DAOLTC>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
VISCERAL LEISHMANIASIS; AMAZONIAN BRAZIL; PSYCHODIDAE; DIPTERA; POPULATIONS; MALARIA; IMPACT;
Keywords:
LUTZOMYIA LONGIPALPIS; LEISHMANIA CHAGASI; LEISHMANIA INFANTUM; PHLEBOTOMINAE; SEX PHEROMONE; AGGREGATION; TARGETS; SANDFLY ABUNDANCE; SANDFLY CONTROL; SANDFLY DISTRIBUTION; LAMBDA-CYHALOTHRIN; AMAZON; BRAZIL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
D.W. Kelly et al., "DIFFERENTIAL APPLICATION OF LAMBDA-CYHALOTHRIN TO CONTROL THE SANDFLYLUTZOMYIA-LONGIPALPIS", Medical and veterinary entomology, 11(1), 1997, pp. 13-24

Abstract

To study the impact of residual pyrethroid insecticide on the abundance and distribution of peridomestic Lutzomyia longipalpis, the sandflyvector of visceral leishmaniasis in Brazil, lambda-cyhalothrin was applied at 20 mg a.i.m(-2) in the following interventions: (i) spraying of all animal pens in a village (blanket coverage); (ii) treatment of a subset of animal pens, either by spraying, or by installation of insecticide-impregnated 1 m(2) cotton sheets as 'targets' (focal coverage). By sampling with CDC light traps, and using a novel analytical approach, we detected a 90% reduction in Lu.longipalpis abundance in sprayed sheds of the focal intervention. However, there was no discernible effect on the abundance of other phlebotomines trapped in sheds, or onthe abundance of Lu.longipalpis in untreated dining-huts and houses. This differential impact on Lu.longipalpis abundance is explained in terms of the disruption of male pheromone production. Treated targets were approximately half as effective as residual spraying in reducing the abundance of Lu.longipalpis in sheds. Following blanket intervention, the abundance of Lu.longipalpis in traps fell by only 45% (not significant): catches at untreated dining-huts actually increased, possibly because the blanket coverage diverted Lu.longipalpis away from majoraggregation sites at animal pens. It is recommended that cafe be taken during vector control programmes to ensure that all potential aggregation sites are treated. The possible consequences of leaving some sites untreated include poor control of peridomestic sandfly abundance and an increase in the biting rate on dogs and humans.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 15:36:35