External Parasites

Question 1

Name 3 types of biting flies.

Answer 1

Deer Fly, Horse Fly, Stable Fly, Horn Fly

Source: Horse Science (National 4-H Council), p. 52

Question 2

What is the common name for barn itch?

Answer 2

Ringworm

Source: Horses and Horsemanship, Ensminger, p. 362

Question 3

What are three species of bots?

Answer 3

Horse Bot (nit fly), Thread Bot (chin fly), Nose Bot (nose fly)

(Source: Horses and Horsemanship, Ensminger, p. 349)

Question 4

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)?

Answer 4

Molting

Source: Horse Science (National 4-H Council), p. 54

Question 5

What causes mange in horses?

Answer 5

Mites

Source: Horse Science (National 4-H Council), p. 54

Question 6

EEE and WEE are transmitted by what insect?

Answer 6

Mosquito

Source: AYHC Horse Industry Handbook, 625-1

Question 7

Ringworm is caused by what?

Answer 7

A fungus

Source: Horse Science (National 4-H Council), p. 55

Question 8

This is a contagious infection of the outer layers of skin caused by an infestation of microscopic fungi.

Answer 8

Ringworm

Source: Horses and Horsemanship, Ensminger, p. 362

Question 9

Blow flies are common in the United States and inflict damage by laying eggs where?

Answer 9

In wounds

Source: Horse Science (National 4-H Council), p. 52

Question 10

What disease is caused by mites?

Answer 10

Mange

Source: Horse Science (National 4-H Council), p. 54

Question 11

Name 3 of the 5 most common external parasites.

Answer 11

Flies, Mites, Lice, Ticks, Fungus causing ringworm

Source: Horse Science (National 4-H Council), p. 52

Question 12

Mange mites have how many legs?

Answer 12

Eight

Source: The Horse, Evans, p. 645

Question 13

Name the four distinct stages of flies.

Answer 13

Egg, Larva (bot), Pupa, Adult Fly

Source: Horse Science (National 4-H Council), p. 52

Question 14

Where does the most common botfly, gasterophilus intestinalis, deposit its eggs?

Answer 14

On hairs of the fore limbs and shoulders

Source: AYHC Horse Industry Handbook, 415-5

Question 15

What disease do mites cause?

Answer 15

Mange

Source: Horse Science (National 4-H Council), p. 54

Question 16

Which external parasite attaches to its’ host & feeds on its’ blood?

Answer 16

Tick

Source: AYHC Horse Industry Handbook, 415-7

Question 17

Where do adult lice attach their eggs?

Answer 17

To the hair

Source: AYHC Horse Industry Handbook, 415-6

Question 18

What is the foundation of any successful fly control program?

Answer 18

Good sanitation

Source: AYHC Horse Industry Handbook, 415-3

Question 19

What are nits?

Answer 19

Lice eggs

Source: The Horse, Evans, p. 644

Question 20

What are some of the most persistent pests of horses?

Answer 20

Flies

Source: AYHC Horse Industry Handbook, 415-1

Question 21

Which type of parasites is easier to eradicate - external or internal?

Answer 21

External

Source: Horse Science (National 4-H Council), p. 52

Question 22

The best way to control flies is to keep the barn what?

Answer 22

Clean

Source: AYHC Horse Industry Handbook, 415-3

Question 23

Name a major breeding site for flies.

Answer 23

Manure

Source: AYHC Horse Industry Handbook, 415-3

Question 24

What do ticks feed upon?

Answer 24

Blood

Source: AYHC Horse Industry Handbook, 415-7

Question 25

Which general type of parasites - internal or external - usually bite and/or suck blood?

Answer 25

External parasites

Source: The Horse, Evans, p. 642-645

Question 26

Which fly lays its’ eggs on the horse’s hair coat?

Answer 26

Bot fly

Source: AYHC Horse Industry Handbook, 415-5

Question 27

What is a small organism that lives on or in and at the expense of a larger organism called?

Answer 27

Parasite

Source: The Horse, Evans, p. 617

Question 28

When do mosquitoes most commonly feed on horses?

Answer 28

Dusk

Source: AYHC Horse Industry Handbook, 415-2

Question 29

How long can lice live without a host?

Answer 29

7 days

Source: Equine Science, Griffiths, p. 186

Question 30

Can ringworm be transmitted from horse to human?

Answer 30

Yes

Source: Equine Science, Griffiths, p. 187

Question 31

How long can mange mites live after being removed from host?

Answer 31

2 to 3 weeks

Source: Equine Science, Griffiths, p. 187

Question 32

The Nose Bot Fly lays what color eggs?

Answer 32

Black

Source: Horse Science (National 4-H Council), p. 56