1 - 2 months
How long does the mature bot fly take to emerge from the pupa case?
What is another name for strongles?
What does the adult bot fly resemble?
What color are pinworms?
Which internal parasite's eggs are very resistant to the outside environment & thus may remain infective for years?
What internal parasite is the most common?
How many different kinds of parasites have been found to infest horses?
Feces of infective animals - also pasture, water, bedding, feeding areas
Where do pinworm eggs normally develop?
Horses tend to lick or bite areas where eggs are laid - this stimulates hatching and larvae are taken into the horse's mouth
How do bot fly larvae usually get into the horse's mouth?
At least three
How many species of bot flies are there?
Approx. 9 months
How long does it take for the bot egg to mature in the stomach?
Spring & summer
During what season do bots detach themselves from the stomach wall & are passed outside in the feces?
At what stage of development do large & small strongles have marked differences?
In the small intestine, they develop into mature worms & start egg production
Describe stage 5 of the ascarid life cycle
Eggs past out in the pasture
What is stage 1 in the general life cycle of an internal parasite?
At what stage in the cycle of an internal parasite does the organism become infective?
Where do ascarid larvae develop into mature worms?
Irritation to the anal region causing tail rubbing
What is the main damage caused by pinworm infestation?
Fall & spring (Sept. to March)
What time of the year is it most important to deworm horses?
What forms as a result of the bloodworm migrating in the arteries?
2 internals, 3 xternals
In the five stages of Internal Parasites development how many stages are internal & how many are xternal?
What internal parasite is the most common in young horses & foals?
Purge Deworming or tubing
What is worming a horse via a stomach tube & using feed as a carrier for the compound called?
Coughed up & then swallowed
How do ascarid larvae get out of the lungs to the small intestine?
In which of the 5 stages of an internal parasites, does the organism climb up on grass & become ingested by the horse?
Migration of immature worms through the horse's tissues
What happens in stage 4 in the life cycle of an internal parasite?
What internal parasite causes damage to the arterial walls?
Crawls up on grass & is ingested by the horse
What happens in stage 3 of the life cycle of an internal parasite?
Damage to the stomach wall
What is the main damage caused by bots?
Retarded growth, pot belly, rough hair coat, digestive upsets, pneumonia, death - are all symptoms of which parasite?
Migrate into blood stream to liver & lungs
Where do ascarid larvae go after penetrating the stomach wall?
Have a vet take a fecal parasite egg count
How can you evaluate the effectiveness or resistance to dewormers?
What is a anthelmintic?
Another name for roundworm
What is a nematode?
How many species of strongles affect horses?
How long are ascarids?
What is a skin problem of horses is a possible result of the internal parasites Habronema?
10-12 weeks OR approx. 3 months
How long is the life cycle of ascarids?
What is the common name for Parascaris Equorum?
Lab procedure used to determine the number of parasite eggs in a fecal specimen
What is a fecal egg count?
A large infestation of bots can cause paralysis of what part of the alimentary canal?
Name the parasite that can cause the formation of a thrombus in the horse's cranial mesenteric artery
Cranial mesenteric artery
What blood vessel is damaged by strongyles vulgaris?
Infected larvae in mares milk
How are foals infected with strongyloides?