Biology Questions and Answers
Protozoan
Diseases
- Which is the kingdom of the
parasites that cause malaria
and Chagas’ disease?
Those diseases are caused by the
protozoaProtista.ns, beings of the kingdom
- What is the scientific name
of the etiological agent of
Chagas’ disease?
The etiological agent of Chagas’ is the Trypanosoma cruzi. The namedisease
“cruzi”Brazilian d was given in honor of theoctor Oswaldo Cruz. The (^)
disease was named after the Brazilian
doctor Carlos Chagas.
- Under which forms is the
Trypanosoma cruzi found in
its hosts?
In the definitive hosts as well as in
triatomine the protozoabugs (intermediate hosts)n that causes Chagas’
disease alternates mastigote (flagellate)
and amastigote intermediate forms between theseforms and also (^)
forms.
- What is the vector of
Chagas’ disease? How is the
disease transmitted?
The vector ointermediate host, a f Chagas’ dtriatomine bisease is itsug. The (^)
main species is Triatoma infestans.
Hemipteran insects, like triatiomines,
have suckinused to suck blog mouthparts that can bod from animals or e
organic fluids from plants. The vectors
of Chagas’ hemipterans that havdisease are hematophagouse nocturnal habits. (^)
The blood-suckininfected when they bite a contaminatedg bugs become (^)
person. The parasites then multiply
within with its fecthe bug gut and are eliminatedes. When a contaminated
triatomine bites another person it
defecates near the bite site and thereleased protozoans can penetrate into (^)
the definitive host through mucosae or
through the bite wound. Wild domestic mammals can also be vesselsand (^)
for the disease.
- What is the life cycle of
Trypanosoma cruzi?
Trypanosoma cruzi is a heteroxenous
parasite,host, the triatomin i.e., it has ae bug, and an intermediate
definitive host, the human. The
triatomine sucking the blood of a contaminatedbug becomes infected by (^)
person. Within the bug gut the
protozoatriatomine n reproduces itself. When thebites another person it
defecates near the bite site. Generallythe bitten person itches the area of the (^)
bite and the parasite gains the
circulation of the definitive host. Within
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