Eimeria spp. “Apicomplexa” Flashcards
DH
rabbits (E. stiedae) cattle (E. bovis, E. zunerii) and other mammals – Very host specific
IH
none
What animals are definitly not infected
dogs and cats
____ life cycle
direct
Occysts are ____ and shed in ____
sporulated; feces
sporulates outside or inside of host?
outside
Sporogony definition
asexual reproduction occuring in the environment
spoulated oocysts have how many sporocysts?
FOUR; each with two sporozoites
route of transmission
sporulated occyst ingested
What infects the target cells?
sporozoites
Merogony/schizongony (schizonts):
asexual reproduction to merozoites
Gametology
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
Gametes fuse and ____ are produced in a process called ______
oocysts; fertilization
infectious stage of DH
sporocyst/sporozoite
Site of infection
intestines, verrrrry site specific. Intestinal unless otherwise noted. In liver of RABBITS!!
route of infection:
host- enviornment- host
PPP
Approx. 7 days, 2-3 weeks in CATTLE
Clinical signs
severe GI issues, nervous coccidiosis assoc. with E. zuernii in cattle. High numbers of oocysts present in fecal floatation
Once oocysts are present, damage is done T or F
true
Use what solution when doing a fecal floatation?
sugar floatation, McMasters
Should you put this sample in the fridge? Why or why not??
NO!! They shed unsporulated and need 48 hours for sporulation in environment at certain temps
What solution should be used for storage?
2.5% potassium dichromate
