Brainscape's Knowledge GenomeTM

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


See full index

Parasitology > Bovine- Amblyomma, Rhipicephalus, Otobius, Sarcoptes and Chorioptes > Flashcards

Bovine- Amblyomma, Rhipicephalus, Otobius, Sarcoptes and Chorioptes Flashcards

1
Q

What are Hard ticks (Ixodids) (characteristics)?

A

Larger than mites
Hard dorsal shield, scutum
Scutum can be ornate
Many ticks of wildlife, but 16 reported in domestic animals
Often found on areas that can not be easily groomed (e.g. head, neck, ears…..)

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

What is Ixodid life cycle depend on?

A

Time taken to complete its life cycle depends on:
Species of tick
Environmental conditions
Availability of suitable hosts

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

What is Amblyomma spp. Common name?

A

Lone star tick, Gulf Coast tick

Tropical bont tick, Bont tick

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

What is Amblyomma spp. Hosts?

A

humans, livestock, dogs, cats

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

What is Amblyomma spp. Identification?

A

long palps and ornate scutum
banded legs
several species distributed widely
A. americanum “lone star tick” single white spot on female scutum

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

What is Amblyomma spp. Life cycle?

A

3 host tick

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

What is Amblyomma spp. Site(s) of infection?

A

adults prefer head, ears and neck

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

What is Amblyomma spp. Pathogenesis, lesions, clinical signs?

A

long mouthparts = painful bites
transmit diseases
–rickettsial (e.g. heartwater)
–Hepatozoon americanum by ingestion of A. maculatum

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

What is Amblyomma spp. Diagnosis?

A

identification of tick

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

What is Amblyomma spp. Treatment and prevention?

A

several parasiticides effective

difference if lactating dairy cattle

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

What is Rhipicephalus (Boophilus) spp. Common name?

A

Rhipicephalus spp: blue tick
R. annulatus: cattle fever tick
R. microplus: tropical cattle tick

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

What is Rhipicephalus (Boophilus) spp. Hosts?

A

cattle, other large hosts

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

What is Rhipicephalus (Boophilus) spp. Identification?

A

hexagonal basis capituli
prominent dorsal ridges
hypostome short

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

What is Rhipicephalus (Boophilus) spp. Life cycle?

A

1 host tick

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

What is Rhipicephalus (Boophilus) spp. Site(s) of infection?

A

adults on ventral aspects of body

immatures in ears

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

What is Rhipicephalus (Boophilus) spp. Pathogenesis, lesions, clinical signs?

A

bovine piroplasmosis: B. bigemina

Gallsickness: Anaplasma marginale

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

What is Rhipicephalus (Boophilus) spp. Diagnosis?

A

identification of tick

18
Q

What is Rhipicephalus (Boophilus) spp. Treatment and prevention?

A

several parasiticides effective

difference if lactating dairy cattle

19
Q

What are Soft ticks (Argasids) characteristics?

A 
No dorsal shield, scutum
Leathery tegument, spinose and bumpy
Mouthparts ventrally placed, so not visible dorsally
2 nymphal stages in life cycle
25 species in USA
20
Q

What is Otobius spp. Common name?

A

spinose ear tick

21
Q

What is Otobius spp. Hosts?

A

livestock, humans, dogs

22
Q

What is Otobius spp. Identification?

A

mouthparts not visible dorsally

integument short sharp spines

23
Q

What is Otobius spp. Life cycle?

A

Adults are not on the animal

larvae and nymphs “taxi-ed” long distances

24
Q

What is Otobius spp. Pathogenesis, lesions, clinical signs?

A

ear canals affected seriously in large tick buildups

heavy infestations lead to anemia

25
Q

What is Otobius spp. Treatment and prevention?

A

topical use of acaricidal applications in ear canals

treatment of premises

26
Q

What is Order Acari (Mites) Identification

A

microscopic, <1 mm long
body has scales, spines, setae (hairs) useful in identification
legs may have claws or suckers used to attach to host

27
Q

What is Order Acari (Mites) Different strategies?

A

burrow into the host epidermis Sarcoptes, Notoedres
non burrowing; on skin surface Psoroptes, Cheyletiella, Chorioptes
restricted to an area of body Otodectes

28
Q

What is Sarcoptes scabiei Common name?

A

itch mite, neck and tail mange

29
Q

What is Sarcoptes scabiei Identification?

A

round in shape

30
Q

What is Sarcoptes scabiei Life cycle?

A

E –L –N –A

31
Q

What is Sarcoptes scabiei Site(s) of infection?

A

epidermal layers of skin

32
Q

What is Sarcoptes scabiei Pathogenesis/lesions/clinical signs?

A

potentially most severe cattle mange
mild infection – scaly skin
severe infection – thickened skin
downgrading of hides, drop in meat and milk production

33
Q

What is Sarcoptes scabiei Diagnosis?

A

skin scraping

34
Q

What is Sarcoptes scabiei Treatment and prevention?

A

MCLs
eprinomectin approved for lactating dairy cattle
Must be reported to authorities

35
Q

What is Chorioptes bovis Hosts?

A

cattle, small ruminants, equids

36
Q

What is Chorioptes bovis Identification?

A

rounded mouthparts

sucker shape at end of stalks

37
Q

What is Chorioptes bovis Life cycle?

A

Non-burrowing
Feeds on skin surface and epithelial debris
Female: lives 4-6 wk; lays approx 90 eggs
PPP: 10 d
E –L –N -A

38
Q

What is Chorioptes bovis Site(s) of infection?

A

tailhead, udder and legs

39
Q

What is Chorioptes bovis Pathogenesis and lesions/Clinical signs?

A

late winter, mild condition

damages hides

40
Q

What is Chorioptes bovis Diagnosis?

A

skin scraping

41
Q

What is Chorioptes bovis Treatment and prevention?

A

standard louse treatments give good response

MCLs (eprinomectin) are used as a pour-on in lactating dairy cattle

Parasitology (23 decks)

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