Lab 2-Trypanosoma Flashcards
Kingdom of Trypanosoma
Animalia
Phylum of Trypanosoma
Euglenozoa
Disease caused by Trypanosoma (broad)
Trypanosomiasis
Sample disease that Trypanosomiasis can manifest
Chaga’s disease (humans) / Sleeping sickness
How are most parasites spread?
blood-feeding vectors
General category of organisms that Trypanosoma uses as direct host
Vertebrates
Most common life patter
Salivarian trypanosomes
Trypomastigote
Form of Trypanosomatidae w/ flagellum arising POSTERIOR to nucleus, and has undulating membrane
Are trypomastigotes intra or extracellular parasites?
Extracellular
Examples of indirect hosts
Tsetse fly
Where do trypomastigotes develop in indirect host?
Gut
What is an epimastigote?
Form of Trypanosomatidae with the flagellum arising ANTERIOR to nucleus, and has undulating membrane
Where do epimastigotes develop and divide?
Salivary glands
What is different about T. cruzi’s method of transfer of infective agents?
It does so through fecal matter, not saliva
What specific species is the causative agent of Chaga’s disease?
Trypanosoma cruzi
Morphological forms of Trypanosoma in chronological order
amastigote –> promastigote –> epimastigote –> trypomastigote
Where do amastigotes live?
inside host’s muscle cell
At what stage does the undulating membrane form?
epimastigote
What characterizes the different morphological forms of trypanosoma?
- flagellum
- kinetoplast
T. lewisi flagellum and kinetoplast
- little flagellum free of undulating membrane
- kinetoplast is posterior, but not terminal
T. cruzi flagellum and kinetoplast
- flagellum emerges from kinetoplast to opposite end
- kinetoplast is at the end
T. gambiense flagellum and kinetoplast
- flagellum present
- kinetoplast is at one end
T. carassii flagellum and kinetoplast
- flagellum is anterior after it passes through kinetoplast and body
- kinetoplast is at posterior end
T. rotatorium flagellum and kinetoplast
- little flagellum free of undulating membrane
- posterior but not terminal kinetoplast
