Protozoa 4 Flashcards
what is the life cycle of malaria?
indirect
mosquito
describe the life cycle of malaria
mosquito spreads sporozoites
sporozoites to liver to red blood cells
mosquito ingests gametes
what is the pathogenesis of malaria?
infected red blood cells stick to endothelium, avoid being destroyed by spleen
what are the genera of avian malaria?
Leucocytozoon
Haemoproteus
Plasmodium
what is the vector of Leucocytozoon?
simulium: black fly
what is the pathogenicity of Leucocytozoon?
often fatal in young
what are the vectors of Haemoproteus?
Culicoides “no-see-ums”
Hippoboscid fly
Chrysops deer fly
what are the vectors of Plasmodium?
culex, aedes, other mosquitos
what is the pathogenicity of Plasmodium?
virulent
what is the definitive host of Plasmodium?
chickens
what is the life cycle of Babesia?
indirect
tick vector
sporozoites injected into bloodstream
sexual in tick
asexual in intermediate host
which Babesia infect cattle?
Babesia bigemina
B. bovis
B. divergens
which Babesia infect dogs?
Babesia canis
B. gibsoni
what does Babesia caballi infect?
horses
what does Babesia microti infect?
human
rodents
what are the clinical signs of Babesia (piroplasmosis)?
destruction erythrocytes and release of toxic parasite products: fever
hemolytic anemia
hemoglobinuria
jaundice
death
how is piroplasmosis treated?
imidocarb
who does Leukocytozoon infect?
ducks
geese
chickens
turkeys
hawks
who does Haemoproteus infect?
pigeons
doves
quails
turkeys
ducks
geese
swans
who does plasmodium infect?
chickens
what species of avian malaria infect chickens in plasmodium?
Plasmodium gallinaceum
Plasmodium circumfexum
describe the life cycle of Haemoproteus spp
gametocytes in red blood cells ingested by fly
oocysts formed in insect
sporozoites injected into blood vessels
asexual development in endothelial cells and then into gametocytes
which hosts can babesia infect?
cattle
dog
horse
human
rodent
how is babesia/piroplasmosis treated?
imidocarb IM
