| effect of a second bloodmeal on the oesophagus colonization by leishmania mexicana complex in lutzomyia evansi (diptera: psychodidae). | migration and colonization of the oesophagus by leishmania mexicana parasites were enhanced after digestion of a second bloodmeal intake in lutzomyia evansi. this event has epidemiological significance since it affects the infection susceptibility of this sand fly species, which is a proven vector of l. chagasi in colombian and venezuelan visceral leishmaniasis foci. also, it may explain the host seeking behaviour displayed by some partially bloodfed flies found inside houses. | 2001 | 11313632 |