Vectorial cornpetence of Lutzomyia species from the verrucarum (Diptera, Psychodidae) group found in a Leishmania braziliensis endernic focus in Reventones, Cundinamarca
Keywords:
experimental infection, experimental transmission, verrucarum group, leishmania braziliensis
Abstract
Five groups of wild Lutzomyia females from the verrucarum group, Lutzomyia torvida, Lutzomyia ovallesiand Lutzomyia nuñeztovari, captured in a mountainous coffee-growing site in Reventones (Cundinamarca) where Leishmania braziliensis is endemic, were experimentally infected in order to determine their susceptibility to infection with this parasite and their ability to transmit the parasite to a hamster by biting. All three sand fly species (placed together in the same cage) were fed using chicken membrane with a mixture of cultured promastigotes and human erythrocytes. ln the first two groups, only the sandfly's susceptibility to infection by the parasite was registered. In the other three groups (besides susceptibility to infection) the females which survived to oviposition were allowed to feed on a hamster in order to transmit the parasite by bite. lnfection percentage was calculated from direct observation of the parasite's flagellate form in the gut of dissected females 4 to 7 days after ingesting the infected meal. General infection rates for the five groups ranged from 23.9% to 70.2%. The three species were susceptible to L.brazi1iensi.s infection. In each group Lu.torvida was the most abundant species, followed by Lu.ovallesi. Lu.nuReztovariwas present in low density in al1 groups. The parasite's amastigote form was not observed in any of the hamsters.These results demonstrate that the three species are susceptible to developing and harbouring L.braziliensis in their gut and that al1 of them could be involved in this parasite's transmission in the endemic disease focus in Reventones (Cundinamarca) and that they can at least be considered as being potential vectors.Downloads
Download data is not yet available.
How to Cite
1.
Santamaría E, Castillo M, Cárdenas R, Bello F, Ayala M, Ferro C. Vectorial cornpetence of Lutzomyia species from the verrucarum (Diptera, Psychodidae) group found in a Leishmania braziliensis endernic focus in Reventones, Cundinamarca. biomedica [Internet]. 1999 Jun. 1 [cited 2024 May 21];19(2):115-26. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/1014
Some similar items:
- Edison Osorio, Carolina Aguilera, Nelson Naranjo, Marcel Marin, Carlos Muskus, Biochemical characterization of the bifunctional enzyme dihydrofolate reductase-thymidylate synthase from Leishmania (Viannia) and its evaluation as a drug target , Biomedica: Vol. 33 No. 3 (2013)
- Camilo Andrés Morales, Juliana Palacio, Gerzaín Rodríguez, Yenny Carolina Camargo, Zosteriform cutaneous leishmaniasis due to Leishmania (Viannia) panamensis and Leishmania (Viannia) braziliensis: Report of three cases , Biomedica: Vol. 34 No. 3 (2014)
- Juan Sergio Mollinedo, Zoraida Mollinedo , Marcelo Magne , Wilson J. Gironda, Óscar D. Salomón , Leishmaniasis en Bolivia. Comprehensive review and current status in Tarija, in the border with Argentina , Biomedica: Vol. 40 No. Supl. 1 (2020): Mayo, Infecciones en el trópico
- Caroline de Souza Silverio , Carolina Bonilla, Vitamin D-associated genetic variants in the Brazilian population: Investigating potential instruments for Mendelian randomization , Biomedica: Vol. 44 No. 1 (2024)
Published
1999-06-01
Issue
Section
Original articles
Article metrics | |
---|---|
Abstract views | |
Galley vies | |
PDF Views | |
HTML views | |
Other views |