+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Interaction of Leptomonas wallacei with the intestinal tract of its natural host Oncopeltus fasciatus (Hemiptera: Lygaeidae)



Interaction of Leptomonas wallacei with the intestinal tract of its natural host Oncopeltus fasciatus (Hemiptera: Lygaeidae)



Journal of Invertebrate Pathology 82(1): 41-49



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.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003820595

Download citation: RISBibTeXText

PMID: 12581718

DOI: 10.1016/s0022-2011(02)00176-3


Related references

Leptomonas wallacei shows distinct morphology and surface carbohydrates composition along the intestinal tract of its host Oncopeltus fasciatus (Hemiptera: Lygaeidae) and in axenic culture. Journal of Eukaryotic Microbiology 50(6): 409-416, 2003

Ultrastructural and biochemical characterization of promastigote and cystic forms of Leptomonas wallacei n. sp. isolated from the intestine of its natural host Oncopeltus fasciatus (Hemiptera: Lygaeidae). Journal of Eukaryotic Microbiology 47(3): 208-220, 2000

Morphological and molecular differentiation of Leptomonas wallacei NSP in the intestinal tract of its natural host Oncopeltus fasciatus. Memorias do Instituto Oswaldo Cruz 94(Suppl. 2): 83, 1999

A 300 kDa single protein from the midgut of Oncopeltus fasciatus , is the putative receptor that mediates the intestinal adhesion of Leptomonas wallacei. Memorias do Instituto Oswaldo Cruz 95(Suppl 2): 125, 2000

Ultrastructural study of the relations between leptomonas oncopelti protozoa trypanosomatidae and the rectal wall of adults of oncopeltus fasciatus hemiptera lygaeidae. Journal of Morphology 154(2): 291-306, 1977

Natural food requirements of the large milkweed bug oncopeltus fasciatus hemiptera lygaeidae and their relation to gregariousness and host plant morphology. Oecologia 26(2): 157-175, 1976

Natural food requirements of the large milkweed bug,Oncopeltus fasciatus (Hemiptera: Lygaeidae), and their relation to gregariousness and host plant morphology. Oecologia 26(2): 157-175, 1976

Ultrastructural study of the relations between Leptomonas oncopelti (Noguchi and Tilden), protozoa trypanosomatidae, and the rectal wall of adults of Oncopeltus fasciatus dallas, hemiptera lygaeidae. Journal of Morphology 154(2): 291-305, 1977

Natural food requirements, host finding, and population density of the large milkweed bug, Oncopeltus fasciatus (Hemiptera: Lygaeidae), in relation to host plant density and morphology. Dissertation Abstracts lnternational 3710: 4858-4859, 1977

Reconstruction of culture derived mature cysts of Leptomonas wallacei N Sp isolated from Oncopeltus fasciatus. Memorias do Instituto Oswaldo Cruz 94(Suppl. 2): 82, 1999

Characterization of cell surface carbohydrates of cultured Leptomonas wallacei n sp isolated from the phytophagous bug Oncopeltus fasciatus. Memorias do Instituto Oswaldo Cruz 93(Suppl. 2): 102, 1998

Cardiac glycosides in Oncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae). I. The uptake and distribution of natural cardenolides in the body. Canadian journal of zoology: 52 (2) 283-290, 1974

Cardiac glycosides in oncopeltus fasciatus hemiptera heteroptera lygaeidae part 1 the uptake and distribution of natural cardenolides in the body. Canadian Journal of Zoology 52(2): 283-290, 1974

The natural association of the large milkweed bug, Oncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae), to the common milkweed plant. Asclepias syriaca L. Transactions Mo Acad Sci, 5: 127, 1973

Some observations on flight in Oncopeltus fasciatus (Hemiptera: Lygaeidae). Journal of the Entomological Society of British Columbia 66: 45-49, 1969