Nematodes Flashcards
Where can nematodes be found?
In many different organs in the body
What is the most important group?
Nematodes
What do adults look like?
Elongated and cylindrical
What type of worm is a ancylostoma caninum?
Hookworm
How long do adult ancylostoma caninum get?
1.5cm
What do ancylostoma caninum eggs look like?
Oval with thin shells and multiple cell clusters
What are four things ancylostoma caninum cause?
Anemia, diarrhea, malabsorption, cutaneous larva migrans
How can you diagnose ancylostoma caninum?
Eggs in fecal flotation
How do you treat ancylostoma caninum?
Treat infected dogs and remove fences
What is cutaneous larva migrans?
Skin inflammation caused by a migrating roundworm larva
What are three parasites that can cause cutaneous larva migrans?
Ancylostoma, unvinaria, strongyloids
What will humans show with cutaneous larva migrans?
Itchy, raised skin lesion that follows a serpentine pattern
What will animals exhibit with cutaneous larva migrans?
Anemia, diarrhea, malabsorption in puppies
What is the incubation period with parasites with cutaneous larva migrans?
2-3 days
Do cutaneous larva migrants have a mortality rate?
No
How is cutaneous larva migrants transmitted?
Skin contact w/infective larva in soil contaminated with dog and cat feces
How do you doagnose cutaneous larva migrans?
Syndrome, history of exposure
How are cutaneous larva migrans treated?
Antiparasitics, antiprotons, antibiotics
How do you control and prevent cutaneous larva migrans? 3
Regular deworming of dogs and cats, prohibition of dogs and cats on playgrounds and beaches, wear protective clothing when in contact with potentially contaminated soil
What is a common hookworm in dogs?
Ancylostoma caninum
What is a common hookworm in both dogs and cats?
Unconaria stenocephala
What type of worm is toxicara canis?
Roundworm ascarid
How big do toxicara canis get?
10-18 cm
What do toxicara canis eggs look like?
Round with a thick pitted shell
Toxicara infects a high percentage of what animal?
Puppies
What animal will die of toxicara canis?
2-3 week old puppies
Why do puppies for of toxicara canis?
Lung damage
What are three symptoms of toxicara canis?
Vomiting, diarrhea, visceral larva migrans
How do you diagnose toxicara canis? 2
Eggs in fevers, worms in vomit
How do you control toxicara canis?
Treat infected, remove feces
What does visceral larva migrans do?
Damage to the body’s internal organs
What type of parasite does visceral larva migrans?
Roundworm larva
What are three specific parasites that do visceral larva migrans?
Toxicara canis, toxicara Cato, baylisacaris procyonis
What are symptoms of visceral larva migrans in humans? 6
A symptomatic or mild: fever, cough, skin rash, abdominal pain, CNS abnormalities, ocular disease
What are three symptoms of visceral larva migrans in animals?
Malnourishment, vomiting, diarrhea
What is the incubation period for visceral larva migrans?
Weeks too this
What is the mortality rate for visceral larva migrans?
Low
Where does visceral larva migrans occur?
Warm moist climates
How are visceral larva migrans transmitted?
Ingestion of worm eggs
What are three ways to diagnose visceral larva migrans?
CBC, Elisa, or serology
What is the treatment for visceral larval migrans?
Antoparasitics
How do you control and prevent visceral larva migrans? 4
Personal hygiene, regular deworming, prevent contamination of soil, keep children from eating dirty things or dirt
What is a roundworm for dogs? 3
Toxicara canis, toxicaris leonina, baylisacaris procyonis
What are two round worms of cats?
Toxicara cati, toxascaris leonina
What is a roundworm in raccoons?
Baylisacaris procyonis
What type of worm is a trichuris vulpis?
Whip worm
How big do trichuris vulpis get?
4.5-7.5 cm
What does trichuris vulpis look like?
Thin anterior, thick posterior
What do trichuris vulpis eggs look like?
Barrel shaped w transparent plugs at each end
How do you diagnose trichuris vulpis?
Eggs in fences
How do you control trichuris vulpis?
Treat dogs and rove feces
What is the prepatent period of trichuris vulpis?
3 months
What is dirofilaria immitus?
Heartworm
How big does dirofilarious get?
15-30cm
Does dirofilaria immitus have eggs we see?
No, just microfilaria
What does dirofilaria do?
Adults obstruct the heart valves and blood vessels
What is the prepatent period of dirofilaria immitus?
6 months
How do you diagnose dirofilaria immitus? 6
Microfilaria in blood smer, hematocrit tube,knots test, filter test, antigen test, antibody test
How do you control heart worm?
Preventative drug treatment, treat infected dogs
What are strongylus vulgaris?
Large strongyles
How big do strongylus vulgaris get?
1.5-2.5cm
What does strongylus vulgaris eggs look like?
Oval with thin she’ll and multiple cell cluster in the center
What animal will strongylus vulgaris affect?
Horses
What are three symptoms of strongylus vulgaris?
In thriftiness, anemia, colic
How do you diagnose strongylus vulgaris?
Eggs and larva in feces
How do you control strongylus vulgaris? 2
Feed horse off ground and treat infected horses
What is pcyuris equi?
Pinworm
How big does oxyuris equi get?
1-15cm long
What does oxyuris equi eggs look like?
Oval with a transparent plug at one end
What is a symptom of oxyuris equi?
Perianal irritation
How is oxyuris equi diagnoses? 2
Eggs in feces/perinatal area
How do you control oxyuris equi?
Treat infected horses
What is the prepatent period for oxyuris equi?
5 months
What is ostertagia ostertagi?
Stomach worm in cows
How big does ostertagia ostertagi get?
5-10 mm long
What does ostertagia ostertagi eggs look like?
Oval with thin she’ll and multiple cell cluster in the center
What is the prepatent period for ostertagia ostertagi?
16-23 days
What does ostertagia ostertagi cause? 2
Weight loss and diarrhea
How do you diagnose ostertagia ostertagi?
Eggs in feces
How can you control ostertagia ostertagi?
Pasture roar action and treat infected animals
What is trichinosis?
Parasitic disease aquired by eating inadequately cooled infected meat
What aides trichinosis?
Trichinosis spiralis
What are human symptoms of trichinosis? 7
A symptomatic to mild fever, muscle pain, swollen eyelids, diarrhea, ocular pain and hemorrhage, CNS abnormalities, cardiac abnormalities
What are animal symptoms of trichinosis?
Sub clinical
What is the incubation period for trichinosis?
5-15 day’s
How is trichinosis transmitted?
Eating raw or undercooked infected meat
What are three ways to diagnose trichinosis?
Syndrome, serology, muscle biopsy
How do you treat trichinosis? 2
Antiparasitics and anti inflammatories
How can you control trichinosis?
Cook meat or free for 20 days
Cool garbage fed to swine
Control rodents in swine rearing ops.