Single and concomitant experimental infectionsby Endotrypanum spp. and Leishmania (Viannia) guyanensis (Kinetoplastida: Trypanosomatidae) in the Neotropical sand fly Lutzomyia longipalpis (Diptera: Psychodidae)

Abstract

Lutzomyia longipalpis females received single and mixed infections with

Lutzomyia longipalpis: an update on this sand fly vector

“…Moreover, the presence of Le. guyanensis in a mixed infection has inhibited the development of Endotrypanum, suggesting the effect of selective pressures that have already been reported previously, among co-cultivated trypanosomatids (Barbosa et al 2006). Also, Lu.…”

“…Flagellates of Endotrypanum schaudinni were able to infect the abdominal midgut, pylorus, ileum, and rectal ampulla but a scarcity of infection has been observed near the stomodeal valve in Lu. longipalpis (Barbosa et al 2006). Moreover, the presence of Le.…”

Molecular Detection of Leishmania in Phlebotomine Sand Flies (Diptera: Psychodidae) from a Cutaneous Leishmaniasis Focus at Xakriabá Indigenous Reserve, Brazil

“…However, this is not sufficient to incriminate this sand fly as a vector of species of Leishmania that cause ACL, despite the fact that several studies on experimental infections showed high susceptibility of Lu . longipalpis to different Leishmania species [ 53 , 54 , 55 ].…”

Seasonality of Lutzomyia fairtigi (Diptera: Psychodidae: Phlebotominae), a species endemic to Eastern Colombia

“…Shaw (1992) distinguished infections caused by these two genera based on the abundance of flagellates in Malpighi tubules, in the case of Endotrypanum, and the absence of tubule infection, in the case of subgenus Viannia. However, Ramos et al (1997) and Barbosa et al (2006), discarded this criterion and, together with Christensen and Herrer (1976), highlighted individual variations in the intestinal distribution of Endotrypanum, with the greatest number of flagellates found in the midgut. Barbosa et al (2006) found in experiments with Lutzomyia longipalpis that Endotrypanum and L. (V.) guyanensis differed significantly in relation to the colonization of the stomodeal valve.…”

“…However, Ramos et al (1997) and Barbosa et al (2006), discarded this criterion and, together with Christensen and Herrer (1976), highlighted individual variations in the intestinal distribution of Endotrypanum, with the greatest number of flagellates found in the midgut. Barbosa et al (2006) found in experiments with Lutzomyia longipalpis that Endotrypanum and L. (V.) guyanensis differed significantly in relation to the colonization of the stomodeal valve. Williams (1999) describes both sexes of the Psychodopygus subgenus as canopy dwellers, with females also feeding in the canopy.…”