Trypanosomes identified as Trypanosoma avium were found in the ornithophilic black flies ( Eusimulium latipes) attacking buzzard nestlings ( Buteo buteo). Parasites formed plugs and rosettes in the hindgut of the vector and were attached on the cuticular lining of the black fly anterior intestine (ileum) by hemidesmosome-like plaques. Hindgut stages from infected black flies were experimentally transmitted into canaries ( Serinus canaria) by ingestion of vectors and by contamination of host conjunctiva. This is the first clear evidence of such transmission in avian trypanosomes. Parasites survived in peripheral blood of birds at the least 10 months. In contrast to the direct inoculation of insect stages, parasites from culture failed to produce infection in experimental birds; this has consequences for laboratory studies of host susceptibility and transmission.

Department of Parasitology Faculty of Science Charles University Vinicná 7 128 44 Prague 2 Czech Republic

Zobrazit více v PubMed

Can J Zool. 1977 Aug;55(8):1359-67 PubMed

Proc Natl Acad Sci U S A. 1992 Oct 15;89(20):9944-8 PubMed

J Parasitol. 2000 Dec;86(6):1213-8 PubMed

Parasitology. 1990 Oct;101 Pt 2:243-7 PubMed

J Parasitol. 1974 Oct;60(5):874-83 PubMed

Can J Zool. 1970 Sep;48(5):945-57 PubMed

Parasitology. 1999 May;118 ( Pt 5):455-60 PubMed

Can J Zool. 1975 May;53(5):507-15 PubMed

Exp Parasitol. 2000 Nov;96(3):178-81 PubMed

Adv Parasitol. 1977;15:1-82 PubMed

Parasitology. 2002 Sep;125(Pt 3):253-63 PubMed

J Med Entomol. 1985 Nov 27;22(6):612-8 PubMed

Parasitol Res. 1989;75(3):167-74 PubMed

J Protozool. 1973 Aug;20(3):436-7 PubMed

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