MIP 260 > Apicomplexans > Flashcards

Apicomplexans Flashcards

(24 cards)

Study These Flashcards
1
Q

general characteristics

A
  • cyst or sporelike structures
  • apical complex
  • parasitic
  • no cilia or flagella
  • asexual or sexual reproduction
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2
Q

apical complex

A
  • conoid, polar ring, micronemes, subpellicular microtubules
  • proteins that help parasite get into host cell
  • rhoptries aid in adhesion and formation of vacuole
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3
Q

Apicomplexa Main Stages of Reproduction

A

schizogony/merogony = replication in high numbers

gametogony = making gametes –> zygotes –> oocyst

sporogony = sporulation of oocysts, become infectious

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4
Q

Hepatozoans

A
  • blood feeding arthropod definitive host
  • transmission through consumption
  • Hepatozoan Americanum
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5
Q

Hepatozoan americanum

A
  • dogs in southern US
  • asexual stage (merogony) in skeletal muscle
  • ticks are DH
  • gametogenesis in gut of tick –> oocyst
  • dog infected after eating tick –> sporocysts
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6
Q

Emeriidae

A
  • merogony and gametogony occur in host
  • sporogony outside
  • micropele = tiny opening covered by micropylar cap
  • SPECIES SPECIFIC eg. coccidia in GI tract of dogs
  • some self-limiting, host may develop partial immunity
  • Eimeria tenella
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7
Q

Structure of Oocyst

A

oocyst –> sporocysts –> sporozoites

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8
Q

Eimeria tenella

A
  • ceca of chickens, high mortality in young birds
  • destroys tissues, enters epithelial cells
  • have both macrogametes and microgametes (dinecious)
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9
Q

Toxoplasma gondii

A
  • cats only definitive host (in intestine)
  • acute infection = tachyzoites
  • chronic infection = bradyzoites, immune system dampens
  • zoitocyst stage surrounded by tough wall, survives for years
  • dinecious w few males
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10
Q

Sarcocystis

A
  • tissue cysts in muscle and brain tissue in reptiles and birds
  • heteroxenous life cycle (carnivorous DH, herbivore IH)
  • through undercooked meat
  • sporulation inside body
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11
Q

Besnoitia

A
  • chronic = skin problems and infertility in bulls
  • actue = swelling, fever
  • cats definitive host
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12
Q

Haemoproteus

A
  • blood cells infected with merozoites (from cells in lungs)
  • flies = definitive host
  • affects birds
  • Haemoproteus columbae
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13
Q
  • cyst or sporelike structures
  • apical complex
  • parasitic
  • no cilia or flagella
  • asexual or sexual reproduction
A

general characteristics

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14
Q
  • conoid, polar ring, micronemes, subpellicular microtubules
  • proteins that help parasite get into host cell
  • rhoptries aid in adhesion and formation of vacuole
A

apical complex

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15
Q

schizogony/merogony = replication in high numbers

gametogony = making gametes –> zygotes –> oocyst

sporogony = sporulation of oocysts, become infectious

A

Apicomplexa Main Stages of Reproduction

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16
Q
  • blood feeding arthropod definitive host
  • transmission through consumption
  • Hepatozoan Americanum
17
Q
  • dogs in southern US
  • asexual stage (merogony) in skeletal muscle
  • ticks are DH
  • gametogenesis in gut of tick –> oocyst
  • dog infected after eating tick –> sporocysts
Study These Flashcards
A

Hepatozoan americanum

18
Q
  • merogony and gametogony occur in host
  • sporogony outside
  • micropele = tiny opening covered by micropylar cap
  • SPECIES SPECIFIC eg. coccidia in GI tract of dogs
  • some self-limiting, host may develop partial immunity
  • Eimeria tenella
19
Q

oocyst –> sporocysts –> sporozoites

Study These Flashcards
A

Structure of Oocyst

20
Q
  • ceca of chickens, high mortality in young birds
  • destroys tissues, enters epithelial cells
  • have both macrogametes and microgametes (dinecious)
Study These Flashcards
A

Eimeria tenella

21
Q
  • cats only definitive host (in intestine)
  • acute infection = tachyzoites
  • chronic infection = bradyzoites, immune system dampens
  • zoitocyst stage surrounded by tough wall, survives for years
  • dinecious w few males
Study These Flashcards
A

Toxoplasma gondii

22
Q
  • tissue cysts in muscle and brain tissue in reptiles and birds
  • heteroxenous life cycle (carnivorous DH, herbivore IH)
  • through undercooked meat
  • sporulation inside body
23
Q
  • chronic = skin problems and infertility in bulls
  • actue = swelling, fever
  • cats definitive host
24
Q
  • blood cells infected with merozoites (from cells in lungs)
  • flies = definitive host
  • affects birds
  • Haemoproteus columbae
MIP 260
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