22. protoxoa Flashcards
protozoan means
single-celled eukaryotes
4 flagellates
giardia
tritrichomonas
leishmania infantum
trypanosoma cruzi
protozoa can be divided into what two groups
excavates
apicomplexa
excavates have a — groove
— mitochondria
ventral feeding
no
excavates have how many flagellum
one or more
which protozoa are free living and parasitic as well as intracellular and extracellular
excavates (flagellates)
Apicomplexa have — under cell membrane
flat vesicles
which protozoa group has mitochondria
apicomplexa
apicomplexa live —
parasitic
obligate intracellular
most apicomplexa protozoa have — organelle
plastid
— have small fattened sacs/vesicles under the cell membrane
Alveolates - apicomplexa
— oocysts are incredibly resilient, bleach will not kill them
Cryptosporidium
highly contagious and zoonotic
fecal-oral apicomplexa (alveolates protozoa)
treatment for cryptosporidium
clindamycin- does not taste good!
giardia is spread by
fecal oral route
eat cyst
cyst hatch to trophozoites in GI tract of dogs(IH/DH)
little to no sex! binary fission- form more cysts that are passed in feces
symptoms of giardia
chronic, intermittent diarrhea,
can be subclinical
spread fecal-oral flagellate- excavates- protozoa
treatment for Giardia
Panacur (fenbendazole)
Metro
spread fecal-oral flagellate- excavates- protozoa
what does giardia look like under microscope
falling leaf
giardia cyst live for the longest in
cool water - 1-3 months
infective dose of giardia
very low 10-25 cysts
how to decrease Giardia
get rid of water source, cysts like to live in cool water
treat environment with dry, warm will kill cysts
spread fecal oral- pick up poop and bathe animals
treat all animals in the household- most asymptomatic
which assemblage of giardia have high zoonotic potential?
A and B
generalists
G. enterica
G. duodenalis
giardia generalists infect
wide amount- high zoonotic- humans, dogs ect.
G. enterica
G. duodenalis
assemblages A and B
giardia are divided into — based on what hosts it infects
assemblages
beaver fever is caused by
giardia assemblages A and B
very zoonotic- generalists
many different lifecycles at same time- very complex