Troph + cyst

small size

small nucleus

-accentric nucleus

-cyst has 4-16 nuclei

-accentric endosome

-coarse chromatin material (not uniform)

• Cyst has 2-4 nuclei
• centrally placed endosome
• uniform chromatin material

• troph + cyst form
• single nucleus
• ellipsoidal cyst
• large glycogen vacuole in cyst (many in troph)

Naegleria fowleri

• meningoencephalitis
• fecal oral/fecal nasal route
• amoeba, cyst and troph form
• nucleus has large endosome
• cyst = perfectly round

• causes Balantidiasis
• troph + cyst form
• macronucleus = sausage shaped
• micronucleus
• trophs have cilia
• ciliate

• Sleeping Sickness
• S-shaped
• promastigote-epimastigote-trypomastigote
• Glossina

• Chagas disease
• C, ? shaped
• transitted by Triatoma

• Troph: 2 nuclei, 8 flagella (4 pairs
• Cyst: up to 4 nuclei, no flagella
• fecal-oral

• normal RBCs
• trophs = rings (multiple trophs in RBC)
• Shizont = up to 32 merozoites
• banana-shaped gametocytes
• Anopheles

P. Ovale/vivax

• englarged RBCs
• 12-16 merozoites in shizont
• round gametocytes

• Normal RBCs
• Trophs = band shaped
• Shizont = up to 10 merozoites
• round gametocytes

• causes Babesiosis
• transmitted by tick
• trophs occur in pairs, or as rosette
• ring form trophs are very large
• Shizont = 8-12 merozoites

• Adults are large and long
• 2 branched testes, ovary has 3 lobes
• egg = very small with large operculum
• targets bile ducts

• rosette-shaped uterus
• egg has knob and operculum

Armed vs. unarmed

10-13 branches vs. 15-25 brances on uterus

• IM host = fleas
• Dog parasite
• Tapered proglottids
• 2 genital pores

• armed scolex
• 3 body segments + head

• whip worm
• thin anterior end w/ thich posterior end
• hand grenade eggs
• long, whiplike
• male = smaller and hooked tail

• no eggs
• parasite of carnivores - reside in intestinal mucosa
• larva = in muscle cells = nurse cells
• copulatory apparatus at end
• very small

Ancylostoma caninum vs. Necator americanus

• Hookworkms
• Teeth vs. Cutting plates
• filariform = infective (can penetrate or be ingested)

• adult has pointy tail
• pinworm
• egg has flat side
• egg develops outside of host, ingested

• male and female
• embryonated egg = small, round, knobs on shell
• unembryonated = larger, oval, knobs all over
• egg ingested