| Trypanosoma | <protozoa> Genus of Protozoa that causes serious infections in humans and domestic animals. African trypanosomes, of the brucei group, are carried by Tsetse flies and, when they enter the bloodstream of the mammalian host go through a complex series of stages. Perhaps the most interesting feature is that there are recurrent bouts of parasitaemia as the parasite alters its surface antigens to evade the immune response of the host (see antigenic variation). The repertoire of antigenic variation is considerable. The s.American trypanosomes (of which T. Cruzi is the best known) are carried by reduviid bugs and cause a chronic and incurable disease. Other interesting features of trypansomes are the kinetoplast DNA and glycosomes (organelles containing enzymes of the glycolytic chain). (18 Nov 1997) |
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| Trypanosoma avium | A species that occurs in owls, crows, and other birds; various bloodsucking arthropods are the vectors, including mosquitoes, black flies, and hippoboscids; this species was reported under a large number of names now considered to be physiologic strains of the species. (05 Mar 2000) |
| Trypanosoma brucei | A species now divided into three subspecies: Trypanosoma brucei brucei, Trypanosoma brucei rhodesiense, and Trypanosoma brucei gambiense. (05 Mar 2000) |
| trypanosoma brucei brucei | A haemoflagellate subspecies of parasitic protozoa that causes nagana in domestic and game animals in africa. It apparently does not infect humans. It is transmitted by bites of tsetse flies (glossina). (12 Dec 1998) |
| trypanosoma brucei gambiense | A haemoflagellate subspecies of parasitic protozoa that causes gambian or west african sleeping sickness in humans. The vector host is usually the tsetse fly (glossina). (12 Dec 1998) |
| trypanosoma brucei rhodesiense | A haemoflagellate subspecies of parasitic protozoa that causes rhodesian sleeping sickness in humans. It is carried by glossina pallidipes, g. Morsitans and occasionally other species of game-attacking tsetse flies. (12 Dec 1998) |
| trypanosoma congolense | A species of trypanosome haemoflagellates that is carried by tsetse flies and causes severe anaemia in cattle. These parasites are also found in horses, sheep, goats, and camels. (12 Dec 1998) |
| trypanosoma cruzi | The agent of south american trypanosomiasis or chagas disease. Its vertebrate hosts are man and various domestic and wild animals. Insects of several species are vectors. (12 Dec 1998) |
| Trypanosoma dimorphon | An African species found in horses, cattle, sheep, goats, pigs, and dogs, formerly thought to be the same as Trypanosoma congolense but now recognised as a distinct and more pathogenic species in cattle, sheep, and dogs; it is spread by tsetse flies across central Africa. (05 Mar 2000) |
| Trypanosoma equinum | A species that causes mal de caderas of horses in Central and South America; except for being akinetoplastic, it is transmitted mechanically by bloodsucking flies. (05 Mar 2000) |
| Trypanosoma equiperdum | A species that causes dourine. (05 Mar 2000) |
| Trypanosoma escomelis | The agent of south american trypanosomiasis or chagas disease. Its vertebrate hosts are man and various domestic and wild animals. Insects of several species are vectors. (12 Dec 1998) |
| Trypanosoma evansi | A parasite chiefly of cattle, camels, horses, and dogs, causing surra and murrina; it is transmitted mechanically by tabanid and other bloodsucking flies. Synonym: Trypanosoma hippicum. (05 Mar 2000) |
| Trypanosoma gambiense | A haemoflagellate subspecies of parasitic protozoa that causes gambian or west african sleeping sickness in humans. The vector host is usually the tsetse fly (glossina). (12 Dec 1998) |
| Trypanosoma hippicum | A parasite chiefly of cattle, camels, horses, and dogs, causing surra and murrina; it is transmitted mechanically by tabanid and other bloodsucking flies. Synonym: Trypanosoma hippicum. (05 Mar 2000) |