Vet tech Parasitology Quiz 2

Protozoans and Ecto parasites

Genus, species & morphological stage

Giardia appendages, Trophozoite

Genus, & morphological stage

Giardia, Resistant Cysts

Genus, & morphological stage

Trichomonas, Trophozoite

Genus, species, common name & morphological stage

Isospora canis, Coccidia, unsporulated = un-infective stage, sporulated = infective stage

Genus, species, common name & morphological stage

Isospora felis, Coccidia, unsporulated = un-infective stage, sporulated = infective stage

Genus & species

Toxoplasma gondii

Toxoplasma gondii stage

In blood stream, acute stage

Toxoplasma gondii stage

In tissue, chronic stage: Bradyzoites

Toxoplasma gondii stage

In fecal float, oocyst

Toxoplasma gondii stage

In the intestine, tachyzoites

Genus

Cryptosporidium

Genus

Sarcocystis

Anthropod: Genus and common name

Ctenocephalides, flea

What is this?

Flea dirt

Genus, species and common name for dog

Trichodectes canis, biting louse

Genus, species and common name for cat

Felicola subrostratus, biting louse

Genus, species and common name

Linognathus setosus, sucking louse of dogs

What are the eggs called?

Nits

Genus and common name

Cuterebra, rodent botfly

What is this ?

Cuterebra/rodent botfly larvae

Genus, species and common name

Demodex canis, burrowing mite, red mange

Genus, species and common name

Sarcoptes scabiei, burrowing mite, canine scabies

Genus, species and common name

Notoedres cati, burrowing mite, feline scabies

Genus & common name

Cheyletiella, non burrowing mite, fur mite

Genus, species and common name

Otodectes cynotis, non burrowing mite, earmites

Name this tick

Deer tick (blacklegged)

Name this tick

American dog tick (wood tick)

Name this tick

Lone Star tick

Name this tick

Brown dog tick (kennel tick)

Name this tick

Asian longhorned tick (bush tick)

Protozoans

are unicellular organisms 

Flagellates

Possess at least one flagellum (long whip like appendage)

Ciliates

protozoans covered in tiny short hairs (cilia) over its surface

Apicomplexans

most diverse and complicated protozoan

Common protozoans that affect GI tract of cats/dogs

Giardia spp, Trichomonas, isospora spp

Clinical signs of protozoal diarrhea

Chronic loose soft mucous feces, steatorrhea, possible weight loss

Most common flagellate affecting dogs and cats?

Giardia appendages

What are the two morphological stages of Giardia appendages

Trophozoite and resistant cyst stage

What is the size of the Trophozoite stage in Giardia

9-21 um X 5-15 um

p.p.p for resistant cyst stage of Giardia

7-10 days

what can Trichomonas cause

Abortion of fetus

How can the Coccidian genera be identified from oocysts

The number of sporocysts on an oocyst

How many sporocysts does Isospora have

2 sporocysts each containing 4 sporozoites

How many sporocysts does Eimeria have

4 sporocysts each containing 2 sporozoites

How many sporocysts does Tyzzeria have

8 sporozoites, not contained in sporocysts

How many sporocysts does Wenyonella have

4 sporocysts each containing 4 sporozoites

Whats the size of Isospora when unsporulated

10-50 um

p.p.p for Isospora

4-12 days

What is size range for Oocyst stage in Toxoplasma gondii

10 × 12 um

p.p.p for toxoplasma gondii

1-3 weeks

What is the size of Cryptosporidium

5 um, smallest protozoan

p.p.p of Cryptosporidium

4-10 days

What is the size of Sarcocystis

12-15 × 8-12 um

p.p.p of Sarcocystis

7-33 days

Two types of arthropods

Insects and arachnids

Clinical signs of fleas

Flea alleragy dermatitis, pruritus, self inflicted trauma

p.p.p of Ctenocephalides (fleas)

1-2 days after first blood meal

How long do fleas stay in a cocoon

1 year

What are the 2 categories of lice

Mallophaga (biting) and Anoplura (sucking)

Clincial signs of lice

Pruritus and anemia

Protozoans with zoonotic potential

Giardia, Sarcoptes and Cryptosporidium

Insects

6 legged adults

Arachnids

eight legged adults

Define myiasis

Invasion of living tissue by fly maggots

Clinical signs of Cuterebra

Fistulous swelling, may block air supply if in trachea, or neuro issues if in the brain

How does fly strike dermatitis happen

When botflies start burrowing into the fur/hair and nip at the skin

Clinical signs of fly strike dermatitis

Chewing, shaking, rubbing and scratching affected body part

Define Acariasis

Infestion of mites

What size are mites

Microscopic and have 8 legs

What size is Demodex canis

400 u long

Clinical signs of Demodex canis

Local alopecia with scaling, erythema, hyperpigmentation

Sarcoptes clinicl signs

Alopecia with reddening of skin, intense pruritus

Clinical signs of Notoedres cati (feline scabies)

Cause dry, grey, crusty lesions of head and face

Clinical signs of Cheyletiella

Pruritus

Clinical sings of Otodectes cynotis (earmites)

Pruritus with head shaking, scratching or aural hematoma

What tick is responsible for transmission of lyme and anaplasmosis to dogs and humans

Deer tick (blacklegged)

What can the american dog tick transmit

Rocky Mountain spotted fever

What is the size of the lone star tick

Unfed females 1/3 inch, gorged females ½ inch

What does the brown dog tick transmit to dogs

Ehrilichiosis

What is the new tick that can reproduce without mating

Asian longhorned tick