Comparative vectorial efficiency of Lutzomyia evansi and Lu. longipalpis for transmitting Leishmania chagasi

J. Montoya-Lerma, H. Cadena, M. Oviedo, P. D. Ready, R. Barazarte, Bruno Travi, R. P. Lane

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The infection rates and development of Leishmania chagasi in two sandfly species, Lutzomyia evansi and Lutzomyia longipalpis, were evaluated under natural and experimental conditions. Natural infection rates of Lu. evansi in San Andrés de Sotavento (Colombia) and Montañas de Peraza (Venezuela) (0.05 and 0.2%, respectively) were similar to those previously recorded for this species in Colombia and Venezuela and for Lu. longipalpis in many foci of American Visceral Leishmaniasis (AVL). Both sand fly species were able to support the development of two Colombian strains of L. chagasi experimentally acquired from dogs, hamsters or membrane feeders. However, the experimental infection rates and the sequence of parasite development in the guts of these sand flies revealed that parasite colonisation, differentiation, migration and attachment were more frequent and uniform in Lu. longipalpis than in Lu. evansi. This is consistent with a more recent association between L. chagasi and Lu. evansi, and these results might help to explain the irregularity of AVL outbreaks in foci where Lu. evansi has been reported as the sole vector.

Original languageEnglish (US)
Pages (from-to)19-29
Number of pages11
JournalActa Tropica
Volume85
Issue number1
DOIs
StatePublished - Jan 1 2003
Externally publishedYes

Fingerprint

Lutzomyia longipalpis
Leishmania infantum
Lutzomyia
Psychodidae
Leishmania donovani
Phlebotominae
visceral leishmaniasis
Venezuela
Colombia
Cutaneous Leishmaniasis
infection
Visceral Leishmaniasis
parasites
hamsters
Parasites
Infection
digestive system
dogs
Cricetinae
Disease Outbreaks

Keywords

  • Comparative experimental infections
  • Comparative natural infections
  • Leishmania chagasi
  • Lu. longipalpis
  • Lutzomyia evansi
  • Parasite-vector relationships

ASJC Scopus subject areas

  • Parasitology
  • Infectious Diseases

Cite this

Comparative vectorial efficiency of Lutzomyia evansi and Lu. longipalpis for transmitting Leishmania chagasi. / Montoya-Lerma, J.; Cadena, H.; Oviedo, M.; Ready, P. D.; Barazarte, R.; Travi, Bruno; Lane, R. P.

In: Acta Tropica, Vol. 85, No. 1, 01.01.2003, p. 19-29.

Research output: Contribution to journalArticle

Montoya-Lerma, J. ; Cadena, H. ; Oviedo, M. ; Ready, P. D. ; Barazarte, R. ; Travi, Bruno ; Lane, R. P. / Comparative vectorial efficiency of Lutzomyia evansi and Lu. longipalpis for transmitting Leishmania chagasi. In: Acta Tropica. 2003 ; Vol. 85, No. 1. pp. 19-29.
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