Cattle ticks/mites/lice

Question 1

what are the main mites effecting cattle?

Answer 1

Chorioptes bovis

Psoroptes spp.

Question 2

Is Chorioptes bovis a burrowing or non-burrowing mite?

Answer 2

non-burrowing

Question 3

describe the morphology of Chorioptes bovis

Answer 3

rounded head
short unjointed pedicels
cup shaped suckers on pedicels
setae on back legs
thumb print pattern

Question 4

where on the host is Chorioptes bovis found?

Answer 4

neck
tail
udder

Question 5

how long is the egg to adult lifecycle of Chorioptes bovis?

Answer 5

3 weeks

Question 6

where are eggs of Chorioptes bovis laid?

Answer 6

on the skin

Question 7

how many legs do the larvae of Chorioptes bovis have?

Answer 7

6

Question 8

what do Chorioptes bovis larvae moult to before reaching the adult stage?

Answer 8

protonymph

tritonymph

Question 9

what are the clinical signs of Chorioptes bovis?

Answer 9

pruritus
alopecia
scaling

Question 10

describe the morphology of Psoroptes spp.

Answer 10

pointed head
obvious pedicels with 3 segments
trumpet shaped suckers on pedicels

Question 11

where does Psoroptes spp. infect on the host first?

Answer 11

withers
neck
tail base

Question 12

what are the clinical signs of Psoroptes spp.?

Answer 12

allergic dermatitis
severe pruritus
skin damage
weight loss

Question 13

what are the ticks that effect cattle?

Answer 13

Ixodes ricinus
Rhipicephalus microplus
Rhipicephalus appendiculatus
Amblyomma spp.

Question 14

describe the morphology of Ixodes ricinus

Answer 14

long palps either side of hypostome
scutum (dorsal hardened plate)
anal groove

Question 15

how many hosts does Ixodes ricinus have?

Answer 15

3

Question 16

what conditions does Ixodes ricinus need to quest?

Answer 16

about 7°C

damp and humid

Question 17

what diseases does Ixodes ricinus transmit?

Answer 17

Babesia divergens (red water)

Question 18

what are the clinical signs of Babesia divergens?

Answer 18

haemoglobinuria
haemolytic anaemia
pyrexia
dehydration
diarrhoea

Question 19

what disease does Rhipicephalus microplus transmit?

Answer 19

Babesia bovis

Question 20

how many hosts does Rhipicephalus microplus have?

Answer 20

1 (exclusively cattle)

Question 21

how long is larvae to adult lifecycle of Rhipicephalus microplus?

Answer 21

3 weeks

Question 22

what are the clinical signs of Babesia bovis?

Answer 22

pyrexia
neurological signs
haemoglobinuria (red water)
death in days

Question 23

what disease does Rhipicephalus appendiculatus transmit?

Answer 23

Thelieria parva (east coast fever)

Question 24

how many hosts does Rhipicephalus appendiculatus have?

Answer 24

3

Question 25

what are the clinical signs of East Coast Fever?

Answer 25

pyrexia lymph node swelling anorexia death

Question 26

what disease does Amblyomma spp. transmit?

Answer 26

Ehrlichia ruminantium (heart water)

Question 27

what are the clinical signs of heart water?

Answer 27

pyrexia and then rapid death

Question 28

what are the lice that effect cattle? (4)

Answer 28

Haematopinus eurysternus Linognathus vituli Solenopotes spp. Bovicola

Question 29

what are the groups of louse? (2)

Answer 29

Mallophaga - biting/chewing | Anoplura - sucking

Question 30

what are the sucking lice of cattle? (3)

Answer 30

Haematopinus eurysternus Linognathus vituli Solenopotes spp.

Question 31

what is the biting louse of cattle?

Answer 31

Bovicola

Question 32

what are the clinical signs of pediculosis?

Answer 32

pruritus hair loss anaemia (sucking) weakness

Question 33

where on the host is Haematopinus eurysternus found?

Answer 33

horn base eyes nostril

Question 34

where on the host is Linognathus vituli found?

Answer 34

head neck dewlap

Question 35

where on the host is Solenopotes spp. found?

Answer 35

head neck dewlap

Question 36

where on the host is Bovicola found?

Answer 36

forehead shoulders back rump

Question 37

what can be used to treat lice?

Answer 37

synthetic pyrethroids | macrocyclic lactones

Question 38

describe the morphology of Haematopinus eurysternus

Answer 38

yellow/brown small pointed head dark margins on abdominal segments

Question 39

describe the morphology of Linognathus vituli

Answer 39

blue/black | long nose

Question 40

describe the morphology of Bovicola

Answer 40

red/brown | rounded head