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Titolo:
ABUNDANCE OF LUTZOMYIA-OVALLESI BUT NOT LUTZOMYIA-GOMEZI (DIPTERA, PSYCHODIDAE) CORRELATED WITH CUTANEOUS LEISHMANIASIS INCIDENCE IN NORTH-CENTRAL VENEZUELA
Autore:
FELICIANGELI MD; RABINOVICH J;
Indirizzi:
UNIV CARABOBO,FAC CIENCIAS SALUD,APDO 4873 MARACAY VENEZUELA MINIST SANIDAD & ASISTENCIA SOCIAL,ESCUELA MALARIOL DR ARNOLDO GABALDON MARACAY VENEZUELA UNIV BELGRANO,DEPT INVEST BUENOS AIRES DF ARGENTINA
Titolo Testata:
Medical and veterinary entomology
fascicolo: 2, volume: 12, anno: 1998,
pagine: 121 - 131
SICI:
0269-283X(1998)12:2<121:AOLBNL>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
SAND FLIES DIPTERA; VISCERAL LEISHMANIASIS; VIANNIA BRAZILIENSIS; LONGIPALPIS DIPTERA; ENDEMIC FOCUS; COLOMBIA; BEHAVIOR; VECTORS;
Keywords:
LEISHMANIA BRAZILIENSIS; LE-MEXICANA; LUTZOMYIA OVALLESI; LU-GOMEZI; PSYCHODIDAE; SANDFLIES; CUTANEOUS LEISHMANIASIS; LEISHMANIASIS VECTORS; POPULATION ECOLOGY; INTRADOMICILIARY TRANSMISSION; VENEZUELA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
M.D. Feliciangeli e J. Rabinovich, "ABUNDANCE OF LUTZOMYIA-OVALLESI BUT NOT LUTZOMYIA-GOMEZI (DIPTERA, PSYCHODIDAE) CORRELATED WITH CUTANEOUS LEISHMANIASIS INCIDENCE IN NORTH-CENTRAL VENEZUELA", Medical and veterinary entomology, 12(2), 1998, pp. 121-131

Abstract

In north-central Venezuela Lutzomyia gomezi and Lu. ovallesi are the main endophilic/anthropophilic species of phlebotomine sandflies implicated as vectors of cutaneous leishmaniasis (CL). Lutzomyia ovallesi has been found infected with Leishmania braziliensis (1.2%) and less often with Le, mexicana (0.07%), while Le, braziliensis infections have also been found in Lu, gomezi (0.47%). We investigated population densities of these sandflies using two sampling methods with four series of collections between January 1991 and March 1995 at El Ingenio, Miranda State. All-night outdoor collections from a Shannon trap were correlated with indoor collections from CDC light-traps by linear regression, which proved to be statistically significant for both species. Estimated numbers of female sandflies per house per night were found to beproportional to monthly precipitation (i.e. rainfall), with a lag time of seven months for Ln, ovallesi and of six months for Lrc. gomezi. Predominance of Lu. ovallesi over LEI. gomezi (c. 10:1) was observed throughout the year, with the number of infected females estimated as 0.043 +/- 0.047 Lu. ovallesi and 0.0085 +/- 0.0124 Lu. gomezi per CDC trap per house per night (ratio similar to 5:1). The mean rate of new CL cases per house per year and sandfly abundance were correlated by linear regression, showing a statistically significant relationship for Lu. ovallesi but not for Lu. gomezi. The negative intercept indicated that, on average, the CDC trap density exceeds 800 Lu. ovallesi females/house/year before new CL cases occur at El Ingenio.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 22:05:29