Category J: Parasites Flashcards Preview

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Flashcards in Category J: Parasites Deck (182)
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1

What type of fly lays its small yellowish eggs on the horse's legs, mane, chest, shoulders, belly & chin?

Bot Fly

2

Which internal parasite usually causes tail rubbing?

Pinworms

3

Which adult parasite resembles a honey bee?

Bot Fly

4

Which sex of the horsefly bites the horse?

Female

5

Which insect does the horse bot fly resemble?

Honey Bee

6

What is ringworm caused by?

Fungi

7

Which type of internal parasite is able to cause an embolism in horses?

Strongyles (Bloodworms)

8

What is another name of lice eggs?

Nits

9

How long can lice live when off the host animal?

3 Days

10

Which external parasite lays its eggs in wounds then hatches into maggots, which feed on dead tissue?

Blowfly

11

Name the two types of lice that affect horses.

Biting and Sucking

12

Why shouldn't hay and grain be fed on the floor of the stall?

The feed can mix with fecal material which can contain parasite eggs or larvae.

13

What is caused by various species of fungi arranged in circles on the skin?

Ringworm

14

What is a plant or animal living on, in, or with another living animal that is used for it's food and shelter?

Parasite

15

What is the living animal who provides shelter and food for a parasite called?

Host

16

Of the internal parasites, which one is usually the longest?

Ascarids (intestinal worms)

17

Which internal parasite is sometimes called blood worms?

Strongyles

18

What is it called when a drug is given to your horse to kill internal parasites within the horse's body?

Worming or Deworming

19

Why shouldn't you allow your horses to drink from barnyard pools and pasture water holes?

To avoid getting parasites

20

What is another name for the six-legged larvae of the tick?

Seed tick

21

Which internal parasite of the horse spends it's adult life cycle outside of the horse?

Bots

22

Where do mites lay their eggs and reproduce?

Under the skin

23

How does a tick breathe?

By holes on its abdomen called spircles

24

which parasites are white-appearing worms with slender tails that cause horses to rub or scratch their tails?

pinworms

25

What is another term for stongyles?

blood worms

26

Internal parasites gain entry into the animal's body in the form of eggs, larvae and what other form?

adults

27

what do we call the organism to which a parasite attaches itself?

host

28

which parasite causes mange?

mites

29

Name the fly that hovers about the horse, then quickly darts towards the animal and glues eggs to the hair in a matter of seconds.

bot fly

30

what are the two main types of strongyles?

large and small

31

which common insect does the adult bot resemble?

honey bee

32

which bot fly lays black eggs?

nose bot fly

33

which of the two main types of parasites is most likely to cause anemia?

internal parasites

34

what is a plant or living in,on, or with another living organism, at whose expense it obtains its food and shelter?

parasite

35

in which organ would bot larvae spend about 9 months maturing before passing out with the feces?

Stomach

36

mange can itch, have crusty scabs and make the hair fall out and is caused by which parasite?

mites

37

what problem is caused by a fungus that make circles on the skin that itch a lot?

ringworm

38

What will be kept under control by not feeding hay or grain on the ground, keeping stall cleaned, removing manure from pastures and paddocks, switching postures and deworming horses every 2 months?

parasites

39

What is the main diet of the tick?

blood

40

which of the 4 main types of internal parasites is the largest?

ascarids

41

what is another name for roundworms?

ascarids

42

which professional should you contact in order to develop a parasite control program for your stable?

veternarian

43

which external parasite is so small, a microscope is needed to identify it?

mites

44

what is the vector for lyme disease?

ticks

45

many veterinarians recommend deworming foals and weanlings how often?

every 30-60 days for the first year of life

46

how long is the life cycle of a mosquito?

10-14 days

47

Ia large population of blood sucking stable flies may cause several problems, name two.

Severe dermatitis, possible infections, secondary affects of blood loss, fractured leg bones from stomping.

48

adult horse flies are the intermediate host to which parasite?

Stomach worms (habronema)

49

what is the incubation time for bot eggs and what stimulates them to hatch?

incubation is 1 - 5 days, have one horse licks them

50

Lonestar, Rocky Mountain, American dog, Tropical and Spinose are all different types of what?

Ticks

51

organophosphates are used primarily to kill which parasite?

Bots

52

butcher tapeworms first occur in what two ages of horses?

weanlings and yearlings

53

which parasite can cause erosion on the tongue and gums of the horse?

Bot larvae

54

what is the foundation of any fly control program?

Good sanitation

55

what is the scientific name for the common horse bot fly?

Gastrophilus intestinalis

56

what is the most common physical form of administering antiparasitic compounds to horses?

paste

57

what two things are necessary for bot eggs to hatch?

friction and moisture

58

during which season are lice more of a problem for horses?

During winter

59

which part of the horse's digestive system is affected by strongyles, pinworms and tapeworms?

Large intestine

60

How long does it take to complete the life cycle of a housefly?

1-2 weeks

61

Name the parasite that affects young foals through its dams milk by penetrating the foals skin.

Strongloids westeri (thread worms)

62

approximately how much money is spent per year on pest control?

270 million dollars

63

when should the treatment for bots be scheduled?

Fron mid too late summer and after a killing frost

64

how long does it take for a nymph to reach maturity?

Three to four weeks

65

In what 2 areas are adult pin worms most commonly founs?

Colon and rectum

66

Doubling the normal dose of pyrantel pamoate is an effective treatment for which parasite?

tape worms

67

What is the life cycle of a fly?

egg, larvae, pupa adult

68

What is the most successful way to control parasites?

Interrupt the parasites life cycle or have a good deworming program

69

Name 2 methods of purge deworming.

Paste, stomach tube and those using feed as a carrier for the compound

70

What type of test is used by your vet to determine the number and type of parasites found in your horse?

Fecal examination

71

Which intestinal parasite is not affected by the 'continuous' deworming program?

Bots

72

How should cattle grubs be removed from horses?

Surgically by a vet

73

What are the 2 basic methods of internal parasite reduction?

Management and chemical reaction

74

Oribatid mites are an intermediate host for which parasite?

Tape worms

75

Ascarids eggs will start to appear in the manure of foals at what age?

10-13 weeks

76

Threadworms (strongloides westeri) infections originate from what 2 sources in the foals environment?

By ingesting larvae in dam's milk or by larvae present in bedding by penetrating foal's skin

77

Which fly is so annoying to some horses that they may lose weight because they spend more time fighting this fly than grazing?

Bot fly

78

Infections or strongyloids westeri are most common in young foals of what ages?

From 4-47 days old

79

What is the main problem caused by threadworms?

Diarrhea

80

How long is the life cycle of the threadworm?

Less than 2 weeks

81

What are the large roundworms that primarily affect foals and young growing horses?

Ascarids (parascaris equorum)

82

Which of the major internal parasites of the horse has no migratory state after being ingested?

Pinworms

83

How many eggs will the adult female ascarid lay per day?

Up to 200,000

84

Strongyles occur in horses of all ages except one, name this age.

Neonatal foals

85

How many eggs does the strongyle female lay per day?

Several thousand eggs per day

86

How long is the average life cycle of the strongylus vulgaris?

6-7 months

87

How long is the average life cycle of strongylus equinus and edentatus?

8-11 months

88

What is the primary objective to a successful parasite control program?

Interruption of the parasite's life cycle

89

why is it important to know the life cycle of various parasites?

To aid in proper prevention and treatment

90

Ringworm is caused by various species of fungi, arranged in circles on the skin. What is the usual treatment for ringworm?

Wash for lesions with soap and warm water to soften crusts, dry, paint with tincture of iodine daily for 1-2 weeks

91

what are the four life cycle stages of the fly?

Egg, Larvae, Pupa and adult

92

What is the main objective in a parasite control program?

Prevention

93

Which external parasite is responsible for carrying the disease, piroplasmosis?

Tick

94

How does rotating pastures frequently, aid in the control of internal parasites in horses?

It breaks the life cycle of the parasite

95

At what age do the female lice begin to lay eggs?

11-12 days old

96

How many species of bot flies are there?

Three

97

The red tick carries which disease that was first identified in the US in 1960?

African Horse Fever

98

The chorioptic type of mite may cause a foot mange resembling what?

Scratches

99

Symptoms of what parasite includes rubbing, biting, general unthriftiness and patches of skin denuded of hair?

Lice

100

When a horse suddenly begins to rub its tail against posts and other objects, what type of internal parasite would you check for?

Pinworms

101

Which parasite treatment consists of painting lesions with tincture of iodine daily for 1-2 weeks?

Ringworm

102

What is an insect vector?

An insect which carries and transmits disease-causing micro-organisms

103

Animals infected with mites, should be re-treated how often?

Every 7 days

104

What is an insect that carries and transmits disease causing micro organisms?

Insect vector

105

What is a maggot?

A soft bodied, grub-like, footless larva of an insect

106

What parasite would cause grayish crusts through which short hairs protrude in a circular pattern?

Ringworm

107

There are 2 main types of parasites which get their names from where they live on their host, what are the 2 main types of parasites?

External and Internal Parasites

108

Name 2 different kinds of external parasites.

Flies, lice, ticks, mites and fungus causing ringworm

109

What are the 2 main types of lice that get their names from how they obtain their food?

Biting and sucking lice

110

Name 2 different types of internal parasites.

Strongyles (bloodworms), ascarids (intestinal worms), stomach worms, pinworms, bot larva

111

What is the lodgement of an abnormal or foreign particle in a tube or canal of the circulatory system and that tube is too small to permit its passage?

Embolism

112

Which specific parasite carries African Horse Fever?

Red tick

113

Where do pinworms mature?

In the large intestine

114

Horses that bite or lick themselves where bot eggs are attached, cause what to happen?

Stimulates eggs to hatch

115

What are 3 methods used to apply treatments for lice?

Spray, sponge or dust your horse

116

How long does it take for lice to hatch?

11-20 days

117

Female mites lay 10-25 eggs during the laying period, how long is this laying period?

12-15 days

118

What is the average time span from the time a bot changes from a pupa into an adult?

15-17 days

119

What is the immature, worn-like form into which certain insects hatch from the egg?

Larva

120

what is the main difference between external and internal parasites?

External parasites live outside of the host and internal parasites live inside the host

121

Which internal parasite gains entry into the horse when the horse swallows infective larvae that have climbed to the upper parts of pasture grasses?

Strongyles

122

How many eggs does a female mite produce during their laying period?

10-25

123

Name 2 places where do ascarid larvae do the most damage?

Larva as it migrates through body tissue

124

A horse with mange has to be retreated how often to avoid reinfestation?

Every 7 days

125

Approximately how long are adult ascarids?

5-22 inches

126

In what organ of the horse's body is the bot larva found?

Stomach

127

What is the most common treatment for stable flies?

Insecticides and pesticides

128

Which internal parasite is most likely to cause diarrhea, colic, blood clots or even death in horses?

Strongyles (blood worms) or ascarids

129

Fly control is most effective by doing what?

Removal of manure and decaying vegetable material

130

Which external parasite is responsible for carrying piroplasmosis?

Tick

131

What do the following flies have in common: horse fly, deer fly, stable fly, and horn fly?

They all bite and suck blood

132

Which 2 external parasites of teh horse are communicable to man?

Ringworm and mange mites

133

How many days does it take for lice eggs to hatch?

11-20 days

134

What is the name of the 2 larval forms of the blowfly?

Maggots and screw worms

135

what are 2 types of flies that feed on nasal and face secretions?

Horse fly and Face fly

136

Name the type of fly that creates problems when laying eggs in open wounds.

Blow fly

137

what is an intermediate, usually motionless form assumed by metabolic insects after the larval state and is maintained until the beginning of the adult stage?

Pupa

138

How can flies be prevented from breeding around a stable?

By keeping the surroundings free of manure, wet straw and bedding

139

What is another name for strongyloides westeri?

Thread worms

140

Which internal parasite lays the most eggs per day?

Ascarids (up to 200,000)

141

What is another term for thread worms?

Strongyloides westeri

142

How long is the average life span of an ascarid?

About 3 months

143

Which internal parasite is transferred to the young foal through the dam's milk or by larvae in the bedding that penetrate the foal's skin?

Thread worms (strongyloides westeri)

144

what is another term for the common bot fly?

Gasterophilus intestinalis

145

What is another term for the throat or chin bot fly?

Gasterophilus nasalis

146

What is another term for the nose bot fly?

Gasterophilus hemorrhoidalis

147

What is the large roundworm that primarily affects young horses?

Ascarids

148

How long do bot larvae remain in the stomach maturing before being passed out in the manure?

9 months

149

What is a reduction in the hemoglobin of the red blood cells with a deficiency of oxygen in the blood?

Anemia

150

What is the term for a substance capable of destroying or eliminating parasitic worms?

Anthelmintic

151

What is a soft-bodied grub like, footless larvae of an insect?

Maggot

152

What term describes the casting off or shedding of hair, feathers, horns or outer layer of skin then replacing it with new growth?

Molting

153

When is the best to give an anthelmintic to break the life cycle of the bot?

Mid to late summer and again a couple of weeks after the first frost

154

Which internal parasite may cause young foals to become dehydrated and develop chronic diarrhea?

Strongyloides westeri (thread worms)

155

Which of the 3 main types of large strongyles do the most damage?

Strongylus vulgaris

156

Older horses develop an immunity to which internal parasite as the horse matures?

Ascarids

157

Since these parasites target young horses, it may be necessary to deworm every 2 months for this particular parasite for the first year of the horse's life. Name the parasite.

Ascarids

158

Which parasite's eggs are very resistant to the environment and they may remain infective for years and affect young horses the most?

Ascarids

159

Where does the pinworm mature in the horse?

Large intestine

160

Name a practice that will help eliminate parasite during warm weather because it exposes eggs and larvae to the killing affects of the sun.

Harrowing or dragging pastures

161

The veterinarian may evaluate the effectivness or resistance to dewormers by using what method?

Fecal parasite egg count

162

Based on the chemical composition of a dewormer, it is a food practice to do what in order to reduce resistance to the ingredients?

Alternate deworming products based on their chemical composition

163

Why is it necessary to know the different chemical compositions of various deworming products?

Specific chemicals are used to treat specific parasites and there are many brand names for the same chemical dewormers

164

Why is it not recommended to have grass in small exercise lots?

Increases chance of parasite infestation

165

Horse manure can be spread on a field after cleaning the stalls, but the horse should not graze on this field for how long after applying the manure?

1 year

166

Name two ways that lice can be carried between 2 animals.

Contact with infected harness, saddles, blankets, brushes, curry combs or direct contact with an infected animal

167

Name two different types of flies that can bother a horse.

Horse flies, horn flies, stable flies, deer flies, bot flies, flow flies, house flies, face flies.

168

Which general type of parasite usually bite &/or suck blood for food, use body temperature & the hair of the host for comfort & shelter?

External parasites

169

Which general type of parasites would transmit encephalomyelitis?

External parasites

170

Name a type of fly that does no lay eggs in manure

horse or deer flies

171

Strands or cords treated with insecticides hung in stable areas are commonly; used to reduce which parasite

flies

172

When is an outbreak of lice most common

early spring

173

Baits are effective against flies but are poisonous. They should be placed out of the reach of the horse because they usually contain what ingredient that the horse likes?

Sugar

174

If lice are not completely destroyed after the first treatment, when should the next treatment be given?

2-3 weeks after the first treatment

175

Which of the following is the smallest: flies, lice, mites or ticks?

mites

176

What is the process called as a tick changes from one stage to the next?

molting

177

what is the term for the holes in the abdomen of the tick through which it breathes?

Spiracles

178

Strongyles vulgaris, strongyles endentatus and Strongylus equinus are all what specific type of parasite?

Large Strongyles

179

How many legs does the adult tick have?

8

180

Name 5 places where bot flys lay their eggs

On the hair of the forelegs, mane, shoulders, belly, chin, throat, nostrils, lips, flanks

181

Name 4 internal parasites found in horses

Ascrids, strongyles (blood worms) pinworms, bots, threadworms (strongyloids westeri)

182

Name the stages in the life cycle of the tick

Egg, 6 legged larva (seed tick), 8 legged nymph, adult