Shared Flashcard Set

Details

Parasitology Exam Blagburn
exam 2
169
Veterinary Medicine
Professional
10/18/2011

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
What is the hairworm of Equine?
Definition
Trichostrongylus axei
Term
Where is T. axei found?
Definition
Stomach and SI of Equine and migrate to gastric glands.
Term
What do the eggs look like in T. axei?
Definition
Thin walled and morulated.
Term
How long is the prepatent period for T. axei?
Definition
Short only 3 weeks.
Term
What does T. axei cause in horses?
Definition
"Hyperplastic gastritis"
Term
What are the "stomach worms" or “Spirurids” of equine?
Definition
Habronema muscae.
Term
What are the equine parasites that are found in the stomach?
Definition
Trichostrongylus axei
Habronema muscae
Habronema majus
Daschia megastoma
Term
What are the equine parasites of the small intestine?
Definition
Parascaris equorum
Strongyloides westeri
Term
What are the equine parasites in the Large Intestine and Cecum?
Definition
Oxyuris equi and Strongyles
Term
What are the equine parasites of the lung?
Definition
Dictyocaulus arnfieldi
Term
What are the equine parasites of the eyes?
Definition
Thelazia lacrymalis
Draschia/Habronema larvae
Onchocera microfilariae
Term
What are the equine parasites of the skin and S.C. tissues?
Definition
Draschia/Habronema larvae
Onchocerca larvae and microfilariae
Term
What are the equine parasites of Tendons and Ligaments?
Definition
Onchocerca cervicalis
Term
What is known as the equine "hairworm"?
Definition
Trichostrongylus axei
Term
Where is Trichostrongylus axei found?
Definition
Stomach of Horses, Cattle and Swine.
Term
What is the prepatent period for trichostrongylus axei?
Definition
Short- 3 weeks
Term
What does Trichostrongylus axei cause?
Definition
Hyperplastic gastritis
Term
What are the only approved agents of Trichostrongylus axei?
Definition
Ivermectin/moxidectin
Term
Within a population only a ______ _________ of horses will be heavilty infected.
Definition
Small proportion
Term
What are the causative agents of "Summer Sores"?
Definition
Habronema/Draschia
Term
What do the adults of Draschia induce?
Definition
Tumor-like nodules
Term
What are the intermediate hosts of Habronema/Draschia?
Definition
Musicid flies.
Term
What is the Diagnosis of Habronema/Draschia based on?
Definition
Recognition of lesions.
Term
What are the most common hosts for Dirofilaria immitis?
Definition
Dogs (canids)
Term
What are other hosts of Dirofilaria immitis other than dogs?
Definition
Cats, ferrets, sea lions, seals, humans.
Term
What is the habitat of Dirofilaria immitis?
Definition
Adults in right ventricle/pumonary artery; microfilariae in circulating blood.
Term
Where can a
Definition
Term
Where can adults or immature worms be found at other than normal habitat?
Definition
abberant sites: Eye, skin, abdominal cavity, thoracic cavity etc.
Term
What are the distribution of Dirofilaria immitis?
Definition
Throughout North America, where mosquitoes exist for sufficient period to incubate infective larvae; greatest in southeast us.
Term
What do the adult dirofilaria immitis look like?
Definition
Long, slender white worms. Males are 5-7 inches (corkscrew tail).
Females 12-15 inches which are always larger than males.
Term
What must microfilaria of Dirofilaria immitis be distinguished from?
Definition
Acanthocheilonema (dipetalonema) reconditum
Term
What are kind of periodicity do D. immitis microfilariae demonstrate?
Definition
Incomplete nocturnal periodicity
Term
What is the life cycle of D. immitis?
Definition
Adults normally in right ventricle or pulmonary arteries
Females produce microfilariae which circulate in host blood.
Intermediate hosts are mosquitoes.
Mosquitoes take up microfilariae.
Infective larvae (L3) Migrate to mosquito mouthparts; emerge when mosquitoes feed; enter puncture wound.
Develop through L4 and L5 to adult in Sub Q tissues and tissues of the abdoment and thorax
Migrate to heart and lungs via blood vascular system
Mature to adults in heart and lungs
Prepatent period (mff in blood) is about 6 months.
Term
Where do Microfilaria develop to infective larvae in mosquitoes?
Definition
Malpighaian tubules (temperature dependant)
Term
Most dogs are Asymptomatic or Symptomatic?
Definition
Asymptomatic
Term
Adult D. immitis causes what in dogs?
Definition
Endarteritis, decreased blood flow thorugh vessels, reduced perfusion of lungs, and increased cardiac workload.
Pumonary hypertension
Cardiac hypertrophy
Congestive heart failure
Results in coughing
Term
Adult worms D. immitis may be found in right atrium vena cava and by causing what?
Definition
Vena Cava Syndrome
Caval Syndrome.
Term
Most cats are symptomatic or asymptomatic?
Definition
Asymptomatic
Term
What is the lung diseased caused by early death of immature worms in cats?
Definition
Heartworm-Associated Respiratory Disease (HARD)
Term
D. Immitis Antigen tests detect the presence of ____________.
Definition
Female worms only
Term
What is the "Ascarid" or "Roundworm" of Horses?
Definition
Parascaris equorum
Term
Where is Parascaris equorum most often seen in?
Definition
Foals 10-18 weeks
Term
Do Parascaris equorum have transplacental infections?
Definition
False
Term
How big are Parascaris Equorum?
Definition
Largest equine worm- female up to 20 inches
Term
What are Parascaris equorum found in the equine?
Definition
Small Intestine
Term
What does the life cycle of P. equorum involve?
Definition
Heptotracheal migrations
Term
What does the parascaris equorum cause in from pulmonary lesions?
Definition
Summer colds
Term
When does parascaris become a big problem?
Definition
High numbers.
Term
What is known as the intestinal threadworm of equine?
Definition
Strongyloides westeri
Term
Where are the microscopic worms of Strongyloides westeri found in?
Definition
Small Intestine
Term
Strongyloides westeri have only ______________ _____________________ known in parasitic life cycle.
Definition
Parthenogenetic females
Term
Strongyloides westeri is more common in what?
Definition
Young foals
Term
How are most foals affected by strongyloides westeri?
Definition
Ingesting larvae in colostrum
Term
The severe intestinal disease can sometimes cause what from strongyloides westeri?
Definition
Pumonary disease
Term
What is diagnosis of strongyloides westeri based on?
Definition
Small embryonated eggs in feces and history
Term
What is the large quine pinworm?
Definition
Oxyuris equi
Term
What is distinctive about the egg for oxyuris equi?
Definition
Mucoid plug in egg
Term
Do Oxyuris equi cause autoinfection/ retroinfection?
Definition
FALSE
Term
How long is Oxyuris equi prepatent period?
Definition
5 months pre patent period
Term
What do oxyuris equi cause?
Definition
Puriritis ani or seat itch- Sticky matrix in which eggs laid in is irritating.
Term
Do Oxyuris equi have a direct life cycle?
Definition
Yes
Term
What is diagnosis of Oxyuris equi based on?
Definition
History, signs, and presence of large single operculated egg.
Term
What is the definition of storngyles?
Definition
A term which defines a complex of neamtode parasites of horses, 12 genera and over 50 species comprise the quine strongyles.
Term
What is known as the equine lung worm?
Definition
Dictyocaulus arnfieldi
Term
What is natural host of Dictyocaulus arnfieldi?
Definition
Donkey
Term
Where is Dictyocaulus arnfieldi found?
Definition
Trachea and bronchi
Term
What kind of lifecycle do Dictyocaulus arnfieldi?
Definition
Direct
Term
What does Dictyocaulus arnfieldi cause?
Definition
Verminous pneumonia
Term
What is the "equine eyeworm"?
Definition
Thelazia lacrymalis
Term
Where is Thelazia lacrymalis found?
Definition
Conjunctival sac, lacrymal duct
Term
What kind of lifecyce do Thelazia lacrymalis have?
Definition
Indirect
Term
What is the intermediate host for Thelazia lacrymalis?
Definition
Face fly- Musea autumnalis
Term
What can Thelazia lacrymalis cause?
Definition
Conjunctivitis keratitis
Term
What is known as the "Neck threadworm" of horses?
Definition
Onchocerca cervicalis
Term
Does Onchocerca cervicalis cause fistulous withers?
Definition
Nope
Term
What kind of worm is Onchocerca cervicalis?
Definition
Filariid
Term
What kind of life cycle does Onchocerca cervicalis?
Definition
Indirect Life cycle
Term
What is the Intermediate host of Onchocerca cervicalis?
Definition
Culicoides spp. (midges)
Term
Where is the microfilaria of Onchocerca cervicalis found?
Definition
In skin
Term
What can Onchocerca cervicalis microfilaria cause?
Definition
Dermatitis and Periodic opthalmia
Term
What is also known as Halicephalobus gingivalis/deletrix?
Definition
Micronema deltrix
Term
What parasite causes C.N.S. disease in Equine?
Definition
Micronema deletrix
Term
What can Micronema deltrix results in a disease similar to Viral encephalitis?
Definition
C.N.S. disease.
Term
What parasite is normally free-living but is parasitic in horses?
Definition
Micronema deltrix
Term
Where can Micronema deletrix be found abherrant?
Definition
Found in kidney
Term
5 species of strongyles comprise __________ of small strongyle worm burden.
Definition
80-90%
Term
What kind of life cycle do Strongyles have?
Definition
Direct
Term
Do small strongyles migrate out of intestinal tract?
Definition
NO
Term
Do Large strongyles migrate out of small intestine?
Definition
Yes the migrate extensively.
Term
What are the differences between large and small strongyles?
Definition
size, life cycle,
Term
What lesion is associated with S. vulgaris?
Definition
haemomelasma ilei
Term
What is lesions and signs of diseases associated wth S. vulgaris larval migration called?
Definition
Verminous Arteritis
Term
Where is S. vulgaris located?
Definition
cranial mesenteric artery
Term
Where is S. edentatus located?
Definition
liver
Term
Where is S. equinus located?
Definition
Liver, pancreas
Term
What does S. vulgaris cause?
Definition
Verminous Arteritis
Thromboembolic colic
Term
What does S. edentatus cause?
Definition
Serpiginous lesions, necrosis in liver.
Term
What does S. equinus cause?
Definition
Serpiginous lesions in liver, necrosis in liver and pancreas.
Term
What is caused by synchronous emergence of encysted small strongyle larve?
Definition
Larval cyathostomiasis
Term
What are the small strongyles?
Definition
Cyanthostomes
Term
What is known as the "red stomach worm" of porcine?
Definition
Hyostrongylus rubidus
Term
What is the definitive host of Hyostrongylus rubidus and where is it found?
Definition
Porcines. Fundus of stomach
Term
What kind of life cycle does Hyostrongylus rubidus have?
Definition
Direct
Term
Where are Hyostrongylus rubidus seen most often?
Definition
Pastured swine.
Term
What can Hyostrongylus rubidus cause?
Definition
Gastritis or anemia
Term
What must egggs from Hyostrongylus rubidus be differentiated from?
Definition
Oesophagostomum and Globocephalus.
Term
What is the hairworm of equines, porcines and ruminants?
Definition
Trichostrongylus axei
Term
What is the "pig ascarid" or "pig roundworm"?
Definition
Ascaris suum
Term
What is the definitive host of ascaris suum and where are they found?
Definition
Porcines; small intestine
Term
What is the lifecycle of Asaris suum?
Definition
Direct
Term
What do the Ascaris suum eggs look like?
Definition
Very thick/rough outer shell
Term
What do the Ascaris suum eggs look like?
Definition
Very thick/rough outer shell
Term
What do the Ascaris suum eggs look like?
Definition
Very thick/rough outer shell
Term
What does Ascaris suum cause in the lungs of pigs?
Definition
Thumps
Term
What does Ascaris suum cause in the liver?
Definition
Milk spots
Term
What kind of migration do Ascaris suum have?
Definition
hepatotracheal
Term
What age range do ascaris suum do they affect?
Definition
all ages
Term
What kind of transmission do Strongyloides ransomi have?
Definition
transplacental and transcolostral transmission in pigs
Term
What do strongyloides ransomi cause in pigs?
Definition
Diarrhea/unthriftiness
Term
What is known as the "trichina worm" of swine?
Definition
Trichnella spiralis
Term
What do Trichinella spiralis affect and where?
Definition
Porcines, Humans, Polar Bears; Muscles
Term
How do Humans get infected with Trichinella spiralis?
Definition
Eat raw meat.
Term
What does Trichinella spiralis cause?
Definition
Circumobital edema of trichinosis
Term
Where are Trichinella spiralis found as adults? As larvae?
Definition
Adults- intestine
Larvae- striated muscle
Term
How do you control Trichinella spiralis?
Definition
Cook/freeze meat. Prevent garbage feeding.
Term
What are the Nodular worms of porcine?
Definition
Oesophagostomum species.
Term
Where are Oesophagostomum species found?
Definition
Large intestine
Term
What kind of lifecycle do Oesophagostomum species have?
Definition
Direct
Term
What do Oesophagosomum eggslooks like?
Definition
Eggs thin shelled
Term
Where are nodules of Oesophagostomum species found?
Definition
Around cecum/rectum.
Term
Is there age associated immunity with Oesophagostomum species?
Definition
NO
Term
What does Oesophagostomum species cause in pigs?
Definition
Fibrinonecrotic colitis
Term
What is known as the swine whipworm?
Definition
Trichuris suis
Term
Where is Trichuris suis found?
Definition
Porcine cecum/colon
Term
What kind of life cycle is Trichuris suis?
Definition
Direct
Term
What do Trichuris suis eggs look like?
Definition
Eggs thick shelled/bipolar
Term
What does Trichuris suis cause?
Definition
Swine Trichurosis
Term
What is the Swine lungworm?
Definition
Metastrongylus
Term
Where are Metastrongylus found?
Definition
Porcine bronchi/ diaphragmatic lobes
Term
What is the intermediate host of Metastrongylus?
Definition
Earthworm
Term
What do the eggs of Metastrongylus look like?
Definition
Embryonated eggs are thin shlled.
Term
What kind of migration do Metastrongylus look like?
Definition
Lympahtic- Tracheal migration
Term
What does Metastrongylus cause?
Definition
Obstruction of airways, emphaysema, pneumonia, diaphragmatic lobe.
Term
What is the kidney worm of porcine?
Definition
Staphanurus dentatus
Term
Where is Stephanurus dentatus found?
Definition
Porcine pelvis of kidney
Term
What kind of lifecyce does Stahnurus dentatus have?
Definition
Direct. Skin ingested
Earthworm: Paratenic
Term
What does Stephanurus detnatus do to pigs?
Definition
95% liver condemnation.
Dermatitis, organ damage.
Term
What do the eggs look like for Stephanurus dentatus?
Definition
Eggs ellipsoidal/thin shelled found in urine
Term
What is the pre-patent period of Stephanurus dentatus?
Definition
9-16 months.
Term
Where can larvas of Sephanurus dentatus migrate to?
Definition
Spinal cord.
Term
What is known as the Throny-headed worm?
Definition
Macracanthorhynchus Hirudinaceus
Term
Where is M. Hirudinaceus found?
Definition
Porcine small intestine
Term
What is the intermediate host of M. Hirudinacus?
Definition
Bugs/beatles
Term
What Phylum is M. Hirudinaceus found under?
Definition
Phylum Acanthocephala
Term
How are M. Hirudinaceus embryonated?
Definition
With 3 envelopes/ in feces.
Term
Where do M. Hirudinaceus damage?
Definition
At site of attachment
Term
What are the Filariids found in Ruminants skin?
Definition
Stephanofilaria stilesi
Term
What is the intermediate host of Stephanofilaria stilesi?
Definition
Horn fly
Term
Where are Stephanofilaria stilesi found?
Definition
Adults and Microfilaria are found in skin of ruminants.
Term
What does Stephanofilaria stilesi cause?
Definition
Ventral midline dermatits
Alopecia
Nodules and crusted ulcers: Many eosinophils.
Term
What are known as the HOTC worms?
Definition
Haemonchus
Ostertagia
Trichostrongylus
Cooperia Complex
Term
What do the HOTC worms affect?
Definition
Ruminants; Abomasum and Small Intestines
Term
What is the life cycle of HOTC?
Definition
Direct
Term
What does HOTC cause?
Definition
Bottle Jaw and MOrocca Leather syndromes.
Term
Where are arrested L4 larvae of HOTC found?
Definition
Abomasums wall.
Term
When does Type I Ostertagiasis occur?
Definition
Happens during first pasture
Term
When are Type II Ostertagiasis?
Definition
Late winter early spring after 1st grazing season in northern climates
Term
How do you cure H. Contortus?
Definition
"Self-Cure"
Term
What occurs with Spring rise with Type II Ostertagiasis?
Definition
High egg counts in spring.
Supporting users have an ad free experience!