Interaction of Leptomonas wallacei with the intestinal tract of its natural host Oncopeltus fasciatus (Hemiptera: Lygaeidae) |
| |
Authors: | Romeiro Alexandre Monteiro Leal Luiz Henrique de Souza Wanderley Attias Marcia |
| |
Affiliation: | Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Universidade do Brasil/UFRJ, Centro de Ciências da Saúde, Bloco G, Cidade Universitária, 21949-900, Rio de Janeiro, Brazil. |
| |
Abstract: | While investigating the distribution of Leptomonas wallacei in the intestine of the insect host Oncopeltus fasciatus, promastigotes and cyst-like forms of L. wallacei were observed only in the midgut ventricles V(3) and V(4) and the hindgut. In video-microscopy, once contact had occurred, the parasites remained attached to the midgut epithelium. Scanning electron microscopy revealed the adhesion of flagellates and cyst-like forms to the midgut wall and to the rectal pads of the hindgut. Using transmission electron microscopy, we observed that adhesion occurred mainly between the flagellum and the perimicrovillar membranes secreted by the midgut epithelium. No modifications were observed either in the parasite or in the epithelial cells. In the hindgut, adhesion to the superficial wax layer of the epithelial cells of the rectal pads was via flagellum. Host cell morphology appeared unaffected by L. wallacei. |
| |
Keywords: | Host-parasite relationship Leptomonas Trypanosomatid Oncopeltus fasciatus |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|