Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DWT Exam 4 > Parasitology: Arthropods > Flashcards

Parasitology: Arthropods Flashcards

1
Q

What are the general characteristics of order insecta?

A

Adults have 6 legs and 3 body segments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the 3 body segments of insecta?

A

Heady, thorax, abdomen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the life cycle of insecta?

A

Metamorphosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is a simple or complete metamorphosis?

A

immature stages look like small adults

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is a complex or complete metamorphosis?

A

marked differenced in morphology & structure between adults and immature stages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the general characteristics of Siphanoptera?

A

Macroscopic, usually brown
Wingless
Laterally compressed
Complex metamorphosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are Siphanoptera?

A

Fleas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the hosts for Ctenophalides felis

A

Dog, cat, ferrets, but many others

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Where is Ctenophalides felis found?

A

Worldwide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What type of metamorphosis do fleas under go?

A

Complete

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

At what stage are fleas parasitic?

A

Adults only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are immature stages of fleas called?

A

larvae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What happens to eggs of fleas once they have been laid?

A

Fall off of host in to the environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are Siphonaptera legs adapted for?

A

Jumping and running

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What do the immature stages of Ctenocephalides felis prefer in an environment?

A

High humidity and warm temperatures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the stages of the Siphonaptera life cycle?

A

Adult, egg, first stage larva, second stage larvae, third stage larvae, and pupa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How long can adults stay with in the pupa?

A

up tp 6 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How long does it take flea eggs to hatch usually?

A

2 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How long does it take the larvae to mature into the pupa form?

A

6 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Hoe long does it normally take under the right conditions for pupa to hatch into adults?

A

6 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Do female Siphonaptera need a blood meal before they can lay eggs?

A

Yes they need at least one blood meal before they can lay eggs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What is the toughest stage of Ctenocephalides felis?

A

Pupa and they are not easily killed by pesticides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How big are Ctenocephalides felis larvae and what do they require for nutrients?

A

2-5 mm and flea feces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

How do you diagnose Ctenocephalides felis

A

Observation of flea dirt, adult fleas on patient, and patient scratching

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the clinical importance of Ctenocephalides felis?

A

Cause hypersensitivity reaction to flea allergy dermatitis and can range from pruritus to hair loss, cause hotspots

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is Ctenocephalides felis a vevctor of?

A

Tapeworms: Diplidium caninum
Acanthocheilonema roconditum
Bartonella henselae: cat scratch fever

27
Q

Are fleas generally species specific?

A

No

28
Q

What is the name of the rodent flea vector of Yersinia pestis?

A

Echidinophaga gallinacea (rodent fleas or sticktight flea)

28
Q

What is the name of the rodent flea vector of Yersinia pestis?

A

Echidinophaga gallinacea (rodent fleas or sticktight flea)

29
Q

What are the characteristics of Siphonaptera?

A

Macroscopic, usually brown
Wingless
Laterally compressed
Complex metamorphosis

30
Q

What are the general characteristics of Phthiraptera?

A

Small
Wingless
dorso ventrally falttened
White/grey & some are brown

31
Q

What are Phthiraptera?

A

Lice

32
Q

What are the 2 types of Phthiraptera?

A

Anoplura: Sucking lice in mammals only
Mallophaga: Chewing, biting lice- mammals & birds

33
Q

Are lice generally species specific?

A

Yes

34
Q

Where are Phthiraptera found?

A

Worldwide

35
Q

What is the life cycle of Phthiraptera?

A

Incomplete/simple

36
Q

What are the stages of Phthiraptera in the life cycle?

A

egg, 1st nympth, 2nd nymph, a3rd nymph, adult

37
Q

What happens tp eggs of lice once they have been laid?

A

stuck in hairs and feathers

38
Q

What are Phthiraptera legs adapted for?

A

grasping and walking

39
Q

At what stage are Phthiraptera parasitic?

A

all stages

40
Q

What are the immature stages of Phthiraptera called?

A

nymph

41
Q

How are Phthiraptera diagnosed

A

observation of live or eggs,
predilection sites
Presence of clinical signs

42
Q

What are the clinical signs of Phthiraptera infestations?

A

Pruritis
Hair loss/ poor hair coat
& in severe cases anemia, debilitation

43
Q

What is the clinical importance of Phthiraptera?

A

infestation not common in healthy animals especially small animals
uncommon in horses but easily introduced & spread
Very common in large animals
Wild birds: common but not seen in pet birds more common in poultry
Wild mammals: commin

44
Q

What are the forms of transmission for Phthiraptera?

A

direct contact or fomites and carrier animals

45
Q

Who are more susceptible to heavy louse burdens?

A

Stressed animals are more susceptible to heavy louse burdens

46
Q

What time of year are animals more likely to have lice?

A

In the winter months because the host is warm and keep slice warm and is a food supply

47
Q

About how long is the Phthiraptera life cycle?

A

About 4 weeks

48
Q

What is the treatment of Phthiraptera?

A

Physical removal: self grooming, social grooming, other grooming. On the host adults are easy to kill but the eggs are not killed by drugs. Clean potential fomites as possible from the environment

49
Q

What does the human louse transmit?

A

Typhus

50
Q

What are the two lice that humans can have?

A

Pediculus: head & body louse
Phthirus: pubic louse

51
Q

What are diptera?

A

flies

52
Q

What are the general characteristics of diptera?

A

adults have 1 pair of membranous wings
complex/complete metamorphosis
most do not have a parasitic stage

53
Q

Why do we dislike flies so much?

A

Fly worry
Flie bites, fly bite dermititis
skin damage
disease transmission
Some larvae are obligate prasites while others are facultative

54
Q

What species are falls under nonbiting flies?

A

Musca domestic (house fly)
Musca autumnalis (face fly)

55
Q

What are the general characteristics of musca domestic?

A

not parasitic
annoyance can interfere with normal behavior
can serve as a mechanical disease vector
eggs often laid in decaying organic material
short generation times

56
Q

What are the general characteristics of Musca autumnalis?

A

females eat secretions (especially tears) for protein
eggs laid in fresh manure
primarilly affects ruminants and horses

57
Q

What are the importance of Musca autumnalis?

A

Fly worry
irritation of the eye mucosa leading to inflammation & tearing

58
Q

What does Musca autumnalis transmit?

A

Moraxella bovis (causes bovine pink eye)

59
Q

What species fall under biting flies

A

Haematobia irritans (horn fly)
Stomoxys calcitrans (stable fly)
Familt Tabanidae (horse/deer fly)
Culicidae (mosquitoes)
Stimuliidae (simulium)
Culicoides spp. ( no-see-ums, midges)
Hippoboscidae

60
Q

What are the general characteristics of Haematobia irritans (horn fly)?

A

small flies found on dorsum usually unless it is hot then they are on ventrum
Found on cattle mostly and horses some
adults are resident parasites
eggs laid in fresh manure
Complete life cycle in 10-12 days

61
Q

What are the importance of Haematobia irritans (horn fly)?

A

Fly worry
fly bite dermatitis
may carry bacterium causing mastitits

62
Q

What is the most important external parasite of cattle in the U.S.

A

Haematobia irritans (horn fly)

63
Q
A

DWT Exam 4 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions