Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
100 Cards in this Set
- Front
- Back
|
Which species is primarily affected by Histomonas meleagridis? |
3-12 week old turkeys |
|
|
Parasite that had a flagellate form in the ceacal lumen? |
Histomonas meleagridis |
|
|
Which parasites are pleomorphic? |
Trypanosoma brucei and Histomonas meleagridis |
|
|
Which animal can have the general form of Histomonas meleagridis? |
Guinea fowl |
|
|
Parasite causing a form of black head? |
Histomonas meleagridis |
|
|
How many epithelial cells can become infected by one Eimeria oocyst at the beginning of infection? |
8 cells (4 sporocysts with 2 sporozoites in each) |
|
|
Where do schizonts of E. necatrix develop? |
Jejunum and ileum |
|
|
Where does the schizogony of E. averculina take place? |
Duodenum and Jejunum |
|
|
Which animal species can be infected by E. tenella? |
Chicken |
|
|
What does the sporulated oocyst of coccidiosis contain? |
4 sporocysts and 2 sporozoites |
|
|
Where do the schizonts of E. mitis develop (and in which animal)? |
In chicken jejunum |
|
|
Order of the life cycle of Eimeria? |
Sporongy (environment), Schizogony (intestinal cells), Gametogony (intestinal cells), Sporogony (new oocysts in the environment) |
|
|
What method you do not use to identify the species in chicken coccidiosis? |
McMaster method (it counts the number of oocysts but dies not tell you which species it is) |
|
|
Which species of Eimeria are hemorrhagic? |
E. tenella, necatrix and brunetti |
|
|
What do you find on mucosa during an infection with E. maxima? |
Petechiae on the mucosa and serosa |
|
|
What is the characteristic of oocysts of E. maxima? |
Their size is 30x20micrometers |
|
|
Time lapse from the infection of the host to the appearance of a sexual products in the faeces? |
Pre-patent period |
|
|
Eimeria species that produces orange/salmon pink exudate in the intestinal lumen? |
E. maxima |
|
|
Coccidia that has white foci or transverse bands which are ladder like in the duodenum/jejunum? |
E. averculina |
|
|
In the goose what species of Eimeria affects the kidneys? |
E. truncata |
|
|
Which animal is infected by E. stiedai? |
Rabbit (bilinary form) |
|
|
Which species of Eimeria affects the cattle? |
E. zuernii (and E. bovis) |
|
|
What does the sporulated oocyst of E. stiedai contain? |
4 sporocysts each containing two sporozoites |
|
|
Which species of Eimeria can appear as merozoites in bloody faeces? |
E. zuernii of cattle, also schizonts! |
|
|
What kind of extra intestinal symptoms may occur during Eimeria infection in calves? |
CNS signs (tetanic convulsions, cerebral disorders) |
|
|
What can you find in fresh faeces if animals infected with Eimeria? |
Unsporulated oocysts (that will later sporulate in the environment) |
|
|
Where does the gametogony of E. averculina take place? |
Duodenum and jejunum |
|
|
Animals infected by E. brunetti? |
Chicken |
|
|
How many macrogametes develop from one microgamont? |
21-30 |
|
|
How do you detect E. zuernii from the faeces? |
Flotation of unsporulated oocysts |
|
|
Age of calves that get infected with Eimeria? |
2-6months |
|
|
Species of Eimeria found in the large intestine of a rabbit? |
E. piriformis and E. flavescens |
|
|
Which Eimeria species form pint-sized white nodules in the ileum of a rabbit? |
E. magna |
|
|
What is in an unsporulated oocyst regards to Eimeria? |
A zygote |
|
|
Which are the small intestine Eimeria species in a rabbit? |
E. intestinalis, magna and irresidua |
|
|
How do we detect an unsporulated Eimeria oocyst? |
Flotation |
|
|
What do we see clinically when a rabbit had E. stiedai? |
Usually subclinical infection |
|
|
What form of oocysts can be found in the fresh faeces on the course of E. stiedai infection? |
Unsporulated |
|
|
Which animal species can be infected by E. intestinalis? |
Rabbit |
|
|
What does the sporulated oocyst of Eimeria stiedai contain? |
Four sporocysts and two sporozoites |
|
|
What form of Eimeria zuernii might appear sometimes in mucous faeces of calves? |
Merozoites and schizonts |
|
|
Which age is the most susceptible for intestinal Eimeria infection in rabbits? |
1-2 months |
|
|
Where does the sporongy of Eimeria zuernii take place? |
External environment |
|
|
Which species of Eimeria occurs in the small intestine of rabbit? |
E. intestinalis (and magna & irresidua) |
|
|
Where do the calves usually get heave infection with coccidiosis? |
In the feed lots and yards |
|
|
What method is used for counting oocysts in the faeces during an Eimeria infection? |
McMaster method (OPG = oocysts per gram faeces) |
|
|
What is found in old faeces of animals infected by Eimeria? |
Sporulated oocyst |
|
|
Coccidiosis species of a cat |
Isospora rivolta and I. felis |
|
|
What is the most frequent clinical form of isosporosis of dogs? |
Usually subclinical (but can have diarrhea for 1-2 weeks) |
|
|
Which species presents the biggest Isospora oocyst in dogs? |
Isospora canis (38 micrometers), others are only 25 (ohiensis & burrowsi) |
|
|
What is the morphology of the oocysts of Isospora suis? |
2 sporocysts each containing 4 sporozoites |
|
|
How do we best differentiate between Isospora oocysts in the faeces and other oocysts? |
They are larger (around 40 micrometer) |
|
|
Which species of Isospora can be found in dogs? |
I. burrowsi, ohiensis and canis |
|
|
Coccidiosis infect pigs of what ages? |
8-15 days |
|
|
Size of Isospora felis oocysts? |
Oval shaped, 42 micrometer |
|
|
How long does diarrhea caused by Isospora last in puppies and kittens? |
Puppies 1-2 weeks, kittens 1-2 days |
|
|
Which is the method used to detect Cryptosporidium? |
Flotation after staining with for example Kinyoun |
|
|
Life cycle of Cryptosporidia parvum? |
Homoxenous (via airogen/water/dust) |
|
|
Which symptom doesn't occur during toxoplasmosis infection in cats? |
Abortion |
|
|
What does the oocysts of Cryptosporidia contain? |
4 sporozoites (no sporocysts!) |
|
|
What organ is not involved during a C. baileyi infection of poultry? |
Brain (organs affected are intestine (enteral form), lungs (respiratory form) and kidney (renal form) |
|
|
What can we found on the surface of placenta in the case of Toxoplasma infection in sheep and goat? |
Yellow/white necrotic foci |
|
|
How can we characterize the life cycle of Toxoplasma gondii? |
Facultative heteroxenous |
|
|
What is the size of a Cryptosporidium oocyst? |
5-8 micrometer |
|
|
In which animal can we find Toxoplasma oocysts in the faeces? |
Cats (but only for 1-2w) |
|
|
Which species of Cryptosporidium occurs in birds? |
C. baileyi, galli and meleagridis) |
|
|
Where is Cryptosporidium mainly found? |
Small intestine - ileum (or abomasum in the case of C. muris and C. andersonyi) |
|
|
What kind of host is the cat in Toxoplasma gondii? |
Final host |
|
|
For how long does a cat pass Toxoplasma oocysts in the faeces? |
1-2w |
|
|
Which bird species are susceptible for C. baileyi infection? |
Many species |
|
|
Which animals shed oocysts in Toxoplasmosis? |
All species of cats as the definitive host |
|
|
What can be found in sporulated oocysts of Toxoplasmosis? |
2 sporocysts each containing 4 sporozoites |
|
|
Which Cryptosporidium infects birds? |
C. baileyi (galli - chicken, meleagridis - turkey) |
|
|
What is the patency period for Toxoplasmosis? |
20 days |
|
|
Causative agent of Cryptosporidiosis in mammals? |
C. muris, parvum, andersonyi, bovis, felis, canis, hominis |
|
|
Oocysts of T. gondii are indistinguishable from that of..? |
Hammondia hammondi |
|
|
Which parasite is homoxenous but not host specific? |
Cryptosporidium parvum |
|
|
What are the clinical signs for C. baileyi? |
Dyspnoea and diarrhea |
|
|
What are the size of Toxoplasma tissue cyst that contains tachyzoites? |
20-100 micrometer |
|
|
What form of Cryptosporidium can be found in fresh faeces? |
Oocysts containing 4 sporozoites |
|
|
How big are the Toxoplasma oocysts? |
10x12 micrometer |
|
|
In which species does T. gondii cause necrotic foci in liver, spleen, lungs and brain? |
Rabbit |
|
|
Which clinical signs can be seen in dogs infected by Toxoplasma? |
CNS symptoms (along with anorexia, pneumonia and diarrhea) |
|
|
What are the symptoms of Besoinoitis? |
Rhinitis, dyspnoea, oedema, skin thickening, wrinkling, alopecia, abortion (anorexia,fever) |
|
|
Size of Cryptosporidium oocyst? |
5-8 micrometer |
|
|
Which species doesn't abort when infected with Toxoplasma? |
Cat |
|
|
Size of Toxoplasma gondii tissue cyst? |
20-100 micrometers (oocyst is 10x12) |
|
|
How to detect oocysts of Cryptosporidium in faeces? |
Flotation (staining with kinyoun, ZN, Giemsa where they stain red in a blue background) |
|
|
Host range of Toxoplasmosis? |
Cats, dogs, birds and humans/other mammals |
|
|
Host range of Cryptosporidium baileyi? |
Anseriform |
|
|
What animals are susceptible for Besnoitia besnoitii? |
Cattle etc |
|
|
What method is used to detect Toxoplasma tachyzoites during infection? |
IFAT, staining |
|
|
What is the most frequent clinical form of Sarcocystiosis of the dog? |
Subclinical |
|
|
What do the oocysts of Cryptosporidia contain? |
4 sporozoites |
|
|
Which organ is not involved during a C. baileyi infection of poultry? |
Brain |
|
|
What can we see on the surface of the placenta of an aborted fetus in the case of Toxoplasma infection? |
Necrotic foci |
|
|
How can we characterize the life cycle of Toxoplasma gondii? |
Facultative heteroxenous |
|
|
What type of host of Sarcocysitis gets the intestinal form of infection? |
Final host (intermediate host gets muscle Sarcocystiosis) |
|
|
What is the Sarcocystis species of cattle? |
S. hirsuta (or cruzi) |
|
|
What is the Sarcocystis species of sheep? |
S. gigantea and ovicanis |
