Macedo-Silva VP, Martins DR, De Queiroz PV, Pinheiro MP, Freire CC, Queiroz JW, Dupnik KM, Pearson RD, Wilson ME, Jeronimo SM, Ximenes MDE F. Feeding preferences of Lutzomyia longipalpis (Diptera: Psychodidae), the sand fly vector, for Leishmania infantum (Kinetoplastida: Trypanosomatidae). Journal of medical entomology. 2014 Jan;51(51). 237-44. PMID: 24605474 [PubMed] PMCID: PMC4277188 NIHMSID: NIHMS554900.
Leishmania infantum, the causative agent of visceral leishmaniasis (VL) in Brazil, is spread mostly by the bite of the sand fly Lutzomyia longipalpis (Lutz & Neiva). We trapped sand flies in endemic neighborhoods near Natal, Brazil, where cases of human and dog VL were documented. Amplification of species-specific cytochrome b (Cyt b) genes by polymerase chain reaction revealed that sand flies from rural and periurban areas harbored blood from different sources. The most common source ofbloodmeal was human, but blood from dog, chicken, and armadillo was also present. We tested the preference for a source of bloodmeal experimentally by feeding L. longipalpis F1 with blood from different animals. There were significant differences between the proportion of flies engorged and number of eggs laid among flies fed on different sources, varying from 8.4 to 19 (P