External Parasites Flashcards
Name 3 types of biting flies.
Deer Fly, Horse Fly, Stable Fly, Horn Fly
Source: Horse Science (National 4-H Council), p. 52
What is the common name for barn itch?
Ringworm
Source: Horses and Horsemanship, Ensminger, p. 362
What are three species of bots?
Horse Bot (nit fly), Thread Bot (chin fly), Nose Bot (nose fly)
(Source: Horses and Horsemanship, Ensminger, p. 349)
By what method does the tick make transitions from one stage of its life cycle to the next stage (i.e. egg to 6 legged larva)?
Molting
Source: Horse Science (National 4-H Council), p. 54
What causes mange in horses?
Mites
Source: Horse Science (National 4-H Council), p. 54
EEE and WEE are transmitted by what insect?
Mosquito
Source: AYHC Horse Industry Handbook, 625-1
Ringworm is caused by what?
A fungus
Source: Horse Science (National 4-H Council), p. 55
This is a contagious infection of the outer layers of skin caused by an infestation of microscopic fungi.
Ringworm
Source: Horses and Horsemanship, Ensminger, p. 362
Blow flies are common in the United States and inflict damage by laying eggs where?
In wounds
Source: Horse Science (National 4-H Council), p. 52
What disease is caused by mites?
Mange
Source: Horse Science (National 4-H Council), p. 54
Name 3 of the 5 most common external parasites.
Flies, Mites, Lice, Ticks, Fungus causing ringworm
Source: Horse Science (National 4-H Council), p. 52
Mange mites have how many legs?
Eight
Source: The Horse, Evans, p. 645
Name the four distinct stages of flies.
Egg, Larva (bot), Pupa, Adult Fly
Source: Horse Science (National 4-H Council), p. 52
Where does the most common botfly, gasterophilus intestinalis, deposit its eggs?
On hairs of the fore limbs and shoulders
Source: AYHC Horse Industry Handbook, 415-5
What disease do mites cause?
Mange
Source: Horse Science (National 4-H Council), p. 54
Which external parasite attaches to its’ host & feeds on its’ blood?
Tick
Source: AYHC Horse Industry Handbook, 415-7
Where do adult lice attach their eggs?
To the hair
Source: AYHC Horse Industry Handbook, 415-6
What is the foundation of any successful fly control program?
Good sanitation
Source: AYHC Horse Industry Handbook, 415-3
What are nits?
Lice eggs
Source: The Horse, Evans, p. 644
What are some of the most persistent pests of horses?
Flies
Source: AYHC Horse Industry Handbook, 415-1
Which type of parasites is easier to eradicate - external or internal?
External
Source: Horse Science (National 4-H Council), p. 52
The best way to control flies is to keep the barn what?
Clean
Source: AYHC Horse Industry Handbook, 415-3
Name a major breeding site for flies.
Manure
Source: AYHC Horse Industry Handbook, 415-3
What do ticks feed upon?
Blood
Source: AYHC Horse Industry Handbook, 415-7
Which general type of parasites - internal or external - usually bite and/or suck blood?
External parasites
Source: The Horse, Evans, p. 642-645
Which fly lays its’ eggs on the horse’s hair coat?
Bot fly
Source: AYHC Horse Industry Handbook, 415-5
What is a small organism that lives on or in and at the expense of a larger organism called?
Parasite
Source: The Horse, Evans, p. 617
When do mosquitoes most commonly feed on horses?
Dusk
Source: AYHC Horse Industry Handbook, 415-2
How long can lice live without a host?
7 days
Source: Equine Science, Griffiths, p. 186
Can ringworm be transmitted from horse to human?
Yes
Source: Equine Science, Griffiths, p. 187
How long can mange mites live after being removed from host?
2 to 3 weeks
Source: Equine Science, Griffiths, p. 187
The Nose Bot Fly lays what color eggs?
Black
Source: Horse Science (National 4-H Council), p. 56
