1921
Volume 35, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
USD

Abstract

Abstract

To test the effects of post-bloodmeal nutrition of sand flies on the transmission of , groups of infected females maintained on diets of sucrose, trehalose, albumin or a mixture of sucrose and albumin, were subjected to forced feeding with capillaries. Transmission was evaluated by counting the parasites egested; numbers ranged from 0 to over 1,000 promastigotes. Infections of the anterior midgut were seen in the majority of flies from all the experimental groups but the percentage of transmitting females was significantly higher in the group maintained on a mixture of sucrose and albumin. There were no attached parasites in the pharynx and cibarium of the flies and the presence of free promastigotes in these parts was not itself indicative of infectivity. However, transmission was positively correlated with apparent inability to engorge. The parasites egested were typical infective form promastigotes and identical to those observed in the esophagus and the anterior thoracic midgut.

A mechanism by which infective stage promastigotes from the esophagus and the stomodeal valve may be transmitted by bite is proposed.

Loading

Article metrics loading...

/content/journals/10.4269/ajtmh.1986.35.926
1986-09-01
2017-09-20
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journals/10.4269/ajtmh.1986.35.926
Loading
  • Accepted : 09 Apr 1986

Most Cited This Month

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error