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Parasitology exam I > Eimeria spp. “Apicomplexa” > Flashcards

Eimeria spp. “Apicomplexa” Flashcards

1
Q

DH

A

rabbits (E. stiedae) cattle (E. bovis, E. zunerii) and other mammals – Very host specific

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2
Q

IH

A

none

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3
Q

What animals are definitly not infected

A

dogs and cats

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4
Q

____ life cycle

A

direct

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5
Q

Occysts are ____ and shed in ____

A

sporulated; feces

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6
Q

sporulates outside or inside of host?

A

outside

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7
Q

Sporogony definition

A

asexual reproduction occuring in the environment

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8
Q

spoulated oocysts have how many sporocysts?

A

FOUR; each with two sporozoites

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9
Q

route of transmission

A

sporulated occyst ingested

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10
Q

What infects the target cells?

A

sporozoites

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11
Q

Merogony/schizongony (schizonts):

A

asexual reproduction to merozoites

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12
Q

Gametology

A

merozoites differentiate to gametes (male-microgametes, female- macrogametes)

Merozoites are small motile bodies released in large numbers after asexual division of the schizont in red blood cells

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13
Q

Gametes fuse and ____ are produced in a process called ______

A

oocysts; fertilization

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14
Q

infectious stage of DH

A

sporocyst/sporozoite

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15
Q

Site of infection

A

intestines, verrrrry site specific. Intestinal unless otherwise noted. In liver of RABBITS!!

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16
Q

route of infection:

A

host- enviornment- host

17
Q

PPP

A

Approx. 7 days, 2-3 weeks in CATTLE

18
Q

Clinical signs

A

severe GI issues, nervous coccidiosis assoc. with E. zuernii in cattle. High numbers of oocysts present in fecal floatation

19
Q

Once oocysts are present, damage is done T or F

A

true

20
Q

Use what solution when doing a fecal floatation?

A

sugar floatation, McMasters

21
Q

Should you put this sample in the fridge? Why or why not??

A

NO!! They shed unsporulated and need 48 hours for sporulation in environment at certain temps

22
Q

What solution should be used for storage?

A

2.5% potassium dichromate

Parasitology exam I (19 decks)

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