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2017 HS Questions > (J) PARASITOLOGY > Flashcards

(J) PARASITOLOGY Flashcards

1
Q

How are deer flies identified?

A

Their gold or green eyes and dark bands across their wings

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2
Q

Why are black flies sometimes called buffalo gnats?

A

Due to their humpback appearance

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3
Q

An allergic reaction to the Culicoides species saliva can cause what problem in horses?

A

Sweet itch

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4
Q

How does larvicide work?

A

It prevents the formation of the exoskeleton of fly larvae

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5
Q

What are the two species of cattle grubs?

A

Hypoderma bovis and Hypoderma lineatum

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6
Q

What are two common names for adult cattle grubs?

A

Heel flies and bomb flies

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7
Q

What two types of ticks are the primary vectors for Rocky Mountain Spotted Fever?

A

The Rocky Mountain Wood Tick and the American Dog Tick

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8
Q

Bites by the Rocky Mountain Wood Tick and the American Dog Tick can cause what issue that is an especially important concern for free range animals?

A

Tick-bite paralysis

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9
Q

Besides Rocky Mountain Spotted Fever, what other disease are Rocky Mountain Wood Ticks known for?

A

Colorado Tick Fever (Mountain Tick Fever)

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10
Q

The Eastern Blacklegged Tick and the Western Blacklegged Tick are known to transmit what two equine diseases?

A

Lyme Disease and Equine Granulocytic Ehrlichiosis

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11
Q

The Lone Star Tick is considered a vector for which equine disease?

A

Equine Granulocytic Ehrlichiosis

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12
Q

The Tropical Horse Tick is a known vector for which equine disease?

A

Equine Piroplasmosis

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13
Q

What species of mite causes Chorioptic mange?

A

Chorioptes bovis

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14
Q

What are the two most toxic species of blister beetles?

A

The striped blister beetle and the three-striped blister beetle

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15
Q

Currently, what three internal parasites are considered to be the most important in regards to potential risk?

A

Small strongyles, ascarids, and tapeworms

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16
Q

Which of the main strongyle species is commonly referred to as the bloodworm?

A

Strongylus vulgaris

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17
Q

Ascarid parasites primarily live in what area of the small intestine?

A

The duodenum and jejunum

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18
Q

How many species of small strongyles are there?

19
Q

Temperatures greater than what will kill small strongyles larvae?

A

100 degrees Fahrenheit or higher

20
Q

Small strongyles eggs will not hatch at temperatures lower that what?

A

40 degrees Fahrenheit

21
Q

What percentage of horses on any given property can harbor tapeworms?

A

20% to 80%

22
Q

What are two names for the mite that is the intermediate host for the taperworm?

A

Oribatid mite of forage mite

23
Q

What are three species of stomach worms?

A

Habronema muscae, Habronema microstoma, and Draschia megastoma

24
Q

Infection with lungworms can result in what two problems in horses?

A

Parasitic pnueumonia and bronchitis

25
Q

Clinical signs of lungworms infection are similar to clinical signs for which disorder?

A

Recurrent Airway Obstruction (Heaves)

26
Q

What is the scientific name for the hairworm?

A

Trichostrongylus axei

27
Q

At 45-50 degrees Fahrenheit, how many days will it take stongyle eggs to hatch?

28
Q

At 70-85 degrees Fahrenheit, how many days will it take stongyle eggs to hatch?

29
Q

At 85-100 degrees Fahrenheit, how many days will it take stongyle eggs to hatch?

30
Q

What percentage of the horse population carries what percentage of the worms?

A

20%of the horse population carries 80% of the worms

31
Q

Name two dewormers that are effective against Tapeworms?

A

Pyrantel and Praziquantel

32
Q

Fecal egg count thresholds of how many eggs per gram are recommend?

A

100 to 500 eggs per gram

33
Q

Threadworms can be detected in foal manure by what age?

A

12 days of age

34
Q

An overdose of moxidectin is how many times the labeled dose?

35
Q

An overdose of ivermectin is how many times the labeled dose?

36
Q

Moxidectin is to be used in horses over what age?

A

Six months

37
Q

The time between deworming and seeing eggs in the manure again is called what?

A

The egg reappearance period

38
Q

Culicoides biting midges can spread which other parasite to the horse?

A

Onchocerca cervicalis

39
Q

Onchocerca cervicalis migrate to, and then take up residence, in what areas of the body?

A

The nuchal ligament and the ventral midline

40
Q

Onchocerca cervicalisare also known as what?

A

Neck Threadworms

41
Q

What can Onchocerca cervicalis cause in the horse?

A

The adult worms can form bumps in the skin that cause intense itching

42
Q

What is it called when the inner corner of the eye is affected by Habronema worms?

A

Ocular Habronemiasis

43
Q

At 50-70 degrees Fahrenheit, how many days will it take strongyle eggs to hatch?

44
Q

What dewormer is effective only against Tapeworms?

A

Praziquantel

2017 HS Questions (12 decks)

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