Protozoa- Ciliophora and Sarcomastigophora Flashcards
How are protozoa classified?
By mode of locomotion
Psedudopodia
Flagella
Gliding movements
Cilia
Protozoa that move by pseudopodia/flagella belong to what phylum?
Sarcomastigophora
Protozoa that move by gliding movements belong to what phylum?
Apicomplexa
Protozoa that move with cilia belong to what phylum?
Ciliophora
A ___________ is the functional unit of a protozoa
Zoite
A __________ is the infective form of Protozoa found in a speculated oocyst
Sporozoite
A ________ is a Protozoa stage that feeds and grows
Trophozoite
_______________ is a protozoa that divides rapidly and ________________ divides slowly
Tachyzoites; bradyzoites.
Protozoa can undergo _______________ reproduction which has a short generation time and exponential increase in the number of zoster
Asexual
Binary fission
Budding
Schizogony
What are the two types of Protozoa sexual reproduction?
Gametogony
Sporogony
Balantidium coli host?
Pig, rodent, primate, human
ID
Trophozote
50-150um
Ciliated
Kidney bean nucleus
Cyst
60um
Cilia sometimes evident inside
Balantidium coli
Site of infection of Balatidium coli? What pathology does it cause?
Large intestine
Mild enteritis and dysentery in pigs and humans
Ulceration in humans
Treatment against Balantidium coli?
Tetracycline
What are the hosts of Giardia intesinalis
Dog, cat, cattle, and humans
Assemblages - species specific
ID
Trophozoites 21um
Cysts 12um
Flagellate
Small intestine
Giardia intestinalis
Pathogenesis of Giardia intestinalis?
Attach to microvilli of bowl-> duodenal ulceration
Malabsorption
Asymptomatic trophozoites-> acute focal inflammation
Clinical signs of Giardia intestinalis ?
None
Acute or chronic diarrhea
How can you diagnose giardia ?
Fecal smear -> cysts and trophozoites
Fecal float with zinc sulfate
ELISA
Treatment of Giardia in cattle?
Benzimidazole
Sanitation and disinfection
Filter water to prevent transmission
Hosts of Spironucelus (Hexamita) spp?
Domenstic and wild fowl (NOT chickens)
ID
Flagellated
Two nuclei
Sprionucelus spp