Week Six: Protista Flashcards
What are protozoans?
Unicellular, microscopic, most are free living
What are the four phyla under Protista?
Flagellated protozoans
Ameboid protozoans
Apicomplexans
Ciliated protozoans
What are the two kingdoms protozoa fall under?
Animalia and protista
What are the most important phylums in veterinary parasitology?
Sarcomastugophora (flagellates and amoebae)
Ciliophora (ciliates)
Apicomplexa (coccidia, malarial organisms, piroplasms)
Flagellates only move in..
Liquid/fluids
Mastigophora Flagellates:
Kingdom, phylum, subphylum
Kingdom: Protista
Phylum: Sarcomastigophora
Subphylum: Mastigophora
What do flagellates look like?
Pear/bullet shaped
What are some examples of flagellates?
Leishmania Trypanosoma Trichomonas Histomonas Giardia spp.
Sarcodina Amoebae
Kingdom, phylum, superclass
Kingdom: Protista
Phylum: Sarcomastigophora
Superclass: sarcodina
How do amoebae move?
By their pseudopodia
What are the two forms of amoebae?
Trophozoite (mobile)
Cyst (resistant, survives in adverse conditions in the external environment)
What do amoebae look like?
Blob like, amorphous
What is entamoeba coli?
Non pathogenic amoeba found in humans and pigs
What is the most important parasitic amoeba of humans?
Entamoeba histolytica
Ciliophora ciliates
Kingdom, phylum, morphology, how do they move
Kingdom: Protista
Phylum: ciliphora
Have two types of nuclei (macro and micro)
Movement through cilia
What are the two forms of ciliphora ciliates?
Trophozoite (dart, twirl speedily in liquid media)
Cyst
Apicomplexa apicomplexans
Kingdom, phylum, who do they parasitize, location in body
Kingdom: Protista
Phylum: apicomplexa
Domesticated animals
Found in intestines and blood cells
What is different about apicomplexa apicomplexans?
Complex life cycles, no visible locomotory organelles
What do apicomplexa look like?
Banana, comma, boomerang
Toxoplasma is an example of what Protozoa?
Apicomplexa apicomplexans
What are the most diverse and most complicated protozoans?
Apicomplexa apicomplexans
Flagellates
Parasite: Giardia spp.
Host, location, transmission route, common name
Host: dogs, cats, horses, ruminants, exotics
Location: intestinal mucosa
Transmission route: ingestion of oocysts
Common name: Giardia
Amoebae
Parasite: Entamoeba histolytica
Host, location, transmission route, common name
Host: dogs, cats, primates, humans
Location: large intestines
Transmission route: ingestion of cysts
Common name: entamoeba
Ciliates
Parasite: Balantidium coli
Host, location, transmission route, common name
Host: dogs and cats
Location: cecum and colon (large intestine of swine*)
Transmission route: ingestion of cysts
Common name: Balantidium
Apicomplexans
Parasite: Cystoisospora spp.
Host, location, transmission route, common name
Host: dogs, cats, and swine
Location: small intestines
TR: ingestion of oocysts
CN: Coccidia
Apicomplexans
Parasite: Toxoplasma Gondii
Host, location, transmission route, common name
Host: feline
Location: intestines
TR: ingestion of sporulated oocysts
CN: Toxoplasma
Apicomplexans
Parasite: Cryptosporidium spp
Host, location, transmission route, common name
Host: dogs, cats, sheep, swine, birds, guinea pigs, snakes, mice
Location: Small intestine
TR: ingestion of oocytes
CN: cryptosporidium
Apicomplexans
Parasite: Sarcocystis spp.
Host, location, transmission route, common name
Host: dogs and cats
Location: small intestine
TR: ingestion of muscles of horses, pigs, and ruminants
CN: Sarcocystis
Flagellates
Parasite: Leishmania spp.
Host, location, transmission route, common name
Host: dog
Location: capillaries and spleen, internal organs, WBC
TR: bite of infective intermediate host (phlebotomine sand fleas)
CN: leishmania
Flagellates
Parasite: Trypanosoma Cruzi
Host, location, transmission route, common name
Host: humans and dogs
Location: peripheral blood
TR: ingestion of intermediate host or feces of bug left on final host
CN: Trypanosome
Apicomplexans
Parasite: Cytauxzoon felis
Host, location, transmission route, common name
Host: cats
Location: RBC
TR: bite from infective intermediate host (tick)
CN: Cytauxzoon
Apicomplexans
Parasite: Babesia Canis
Host, location, transmission route, common name
Host: dogs
Location: RBC
TR: bite of infective intermediate host (tick)
CN: Babesia
Apicomplexans
Parasite: Hepatozoon Canis, americanum
Host, location, transmission route, common name
Host: dogs
Location: WBC, endothelial cells (spleen, bone marrow, liver)
TR: ingestion of infective intermediate host (tick)
CN: Hepatozoon