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28 Cards in this Set

  • Front
  • Back
List the Classes under Phylum Apicomplexa and and subclasses
Class Perkinsus
Class Sporozoa
Subclass Gregarina
Subclass Piroplasma
Subclass Coccidia
Family Eimeridae
reproductive cyst that can also survive the environment and elements between hosts
--general concept for most sporozoans
Describe the oocyst in terms of parts, walls, and numbers
Double wall surrounding another 2 double walled parts that contain 4 naked parasites inside-sporozoite.

Oocyst wall-outer
sporocyst-houses sporozoites
sporozoites-parasite inside
In subclass Gregarina, without head, football shaped oocyst
Subclass Gregarina
parasite of invertebrates
with head, reproduce by syzygy (tail to tail)
Monocystis lumbrici
parasite of earthworms, birds and small mammals may have in feces (from eating worm)
Gregaria polymorpha
common parastie of mealworms
-Tanebrio molitor is found in midgut
Subclass Coccidea
small, intercellular development; some monoxenious, heteroxenious, or both
-lives in digestive tract epithelium
List the steps of a typical coccidian life cycle and explain each step
1.Merogony/Schizogony-ameboid trophozoite multiplies to form more merozoites
2.Gametogony-(sexual stage)formation of male microgametocytes and female macrogametocysts
3.Sporogony-multiple fission of zygote
Which stages of the life cycle occur in monoxenious coccidian?
All stages but oocyst can mature in O2 rich, lower temp environment outside the host.

-sporozoites are released into environment
What stages of life cycle are found in the heteroxenious coccidian?
-merogony/schizogony and part of gametology occurs in verts.
-sporogeny occurs in inverts
Family Eimeridae
most important group(s) of parasites in agriculture. Causes money loss for sick animals.
What are the 2 genera of Family Eimeridae and how are they different?
1. Eimeria-4 sporocysts w/ 2 sporozoite in each
2. Isospera-2 sporocysts w/ 4 sporozoite in each
What type of life cycle does Family Eimeria have
Direct monoxenious
What are the clinical signs of eimeria?
diahrea, shed spithelium
Family Cryptosporidium
major problem of animal husbandry but can affect humans
-Naked sporozoites enter epithelium and leave and encyst
Milwaukee outbreak was due to which coccidian?
Family Cryptosporidium
Family Sarcocystidae
in muscle and between muscle fibers, generally in preditor/prey system (eat one to get infected)
-humans into picture by undercooked beef
Where would you find Sarcocystidae in herbivores? Carnivores?
Herb-GI tract
Is sarcocystidae a monoxenious or heterxenious lifecycle
What is the most unique life cycle studied?
Which animals are involved with the life cycle of toxoplasma?
Cats, mouse, or anything that comes in contact with cat feces (dog sniffs)
Cats are part of which stage in the life cycle?
Is the toxoplasma life cycle monoxenious or heterxenious?
List 2 ways to spread infection.
1. egg picked up by int host (mice) by eating feces. OOcyst forms in intestine and then moves to lungs, liver, nervous system.Moves to asexual stage and multiplies. Cat eats rat.
2. Cat licks butt and reinfects itself.
What is toxoplasma>
disorder caused by toxoplasma gohndii. It's a great parasite because non specific host.
What are some precautions you can take to prevent toxoplasma (pregnant women)
1. Clean litter box everyday (2-3 days_
2. Wash hands thoroughly after being with cat.
3. Where gloves when in garden or raw meat