lice

Question 1

lice characteristics

Answer 1

insect (class), species-specific, worldwide distributed, infections known as pediculoses, on host almost entire life, only leaving it to infect host of the same species + many species prefer defined regions of the host’s body

Question 2

characteristics anoplura (sucking lice)

Answer 2

quite large (un to 5mm length), ehad smaller then thorax, move slowly and only infect mammals, mouth shaped to pierce and suck, legs with robust claws to hold on the host

Question 3

mallophaga (chewing lice) characteristics

Answer 3

mainly infect birds, feed on fur, feather, debris from epidermis, skin secretions or blood, flat body, head larger than thorax, mouth shaped to chew, legs with robust claws to holt on the host

Question 4

life cycle of lice

Answer 4

3 developmental stages: eggs (oval, ~1mm in length, 3 immature nymphs, adults)

Question 5

cat lice: name + characteristics

Answer 5

Felicola subrostratus, chewing louse, pointy, triangular head, localises on face, ears and neck, life cycle completes within 30-40 days

Question 6

dog lice: Heterodoxus spiniger: characteristics

Answer 6

Heterodoxus spiniger: chewing louse, large (5mm), slender and yellowish in colour, body covered with long and thick setae, 2 claws at the end of each leg, localises on the whole body surface

Question 7

dog lice: Linognathus setosus: characteristics

Answer 7

sucking louse of dog and other canids, body length 2 mm after blood meal, 3rd pair of legs larger than the first 2, life cycle complete within 20-40 days, likely vector of Acanthocheilonema reconditum

Question 8

dog lice: trichodectes canis: characteristics

Answer 8

chewing louse of dogs and other canids, small (1-2 mm), flattened and yellowish in colour with darker areas, head wider than long, life cycle completes within 30-40 days, localises on head/neck/tail and causes intense irritation, vector/intermediate host of Dipylidium caninum

Question 9

lice of small ruminants: Bovicola ovis: type of louse

Answer 9

chewing louse, also known as Damalinia ovis

Question 10

lice of small ruminants: Bovicola ovis: physical features (colour, length, head)

Answer 10

red-brownish, 3mm long, head as wide as long and mouth located ventrally

Question 11

lice of small ruminants: Bovicola ovis: life cycle

Answer 11

completes within 15-20 days

Question 12

lice of small ruminants: Bovicola ovis: where does it localise?

Answer 12

localises on shoulders and back, causes intense irritation

Question 13

lice of small ruminants: Bovicola caprae & Bovicola limbata: type of lice

Answer 13

chewing lice

Question 14

lice of small ruminants: Bovicola caprae & Bovicola limbata: physical features (colour, size, head)

Answer 14

red-brownish, 3mm long, head as wide as long, mouth located ventrally

Question 15

lice of small ruminants: Bovicola caprae & Bovicola limbata: life cycle

Answer 15

15-20 days

Question 16

lice of small ruminants: Bovicola caprae & Bovicola limbata: where does it localise?

Answer 16

shoulders and back, causes intense irritation

Question 17

Lice of small ruminants: Linognathus pedalis: type of lice

Answer 17

sucking louse

Question 18

Lice of small ruminants: Linognathus pedalis: physical features (colour, size, head)

Answer 18

blackish, 2.5mm long, second and third pair of legs larger than first

Question 19

Lice of small ruminants: Linognathus pedalis: life cycle

Answer 19

completes within 20-40 days

Question 20

Lice of small ruminants: Linognathus pedalis: where does it localise

Answer 20

legs and abdomen

Question 21

Lice of small ruminants: Linognathus pedalis: what is special about it?

Answer 21

only species able to survive off host for up to 1 week

Question 22

Bovine lice: Bovicola bovis: type of louse

Answer 22

chewing louse, also known as Damalinia bovis

Question 23

Bovine lice: Bovicola bovis: physical features

Answer 23

red-brownish with dark stripe son the abdomen, 2mm long, head as wide as long and rounded anteriorly

Question 24

Bovine lice: Bovicola bovis: life cycle

Answer 24

completes within 15-20 days, can reproduce by parthenogenesis

Question 25

Bovine lice: Bovicola bovis: where does it localise:

Answer 25

head, neck, shoulders, back and base of the tail, causes intense irritation

Question 26

Bovine lice: Haematopinus eurysternus: type of louse

Answer 26

sucking louse

Question 27

Bovine lice: Haematopinus eurysternus: physical features

Answer 27

yellow-brownish, with dark stripes on side of abdomen, 3.4-4.8mm long, head pointy and short, small claws

Question 28

Bovine lice: Haematopinus eurysternus: life cycle

Answer 28

20-30 days

Question 29

Bovine lice: Haematopinus eurysternus: localisation

Answer 29

head and bases of horns and tail

Question 30

Bovine lice: Haematopinus quadripertusus: type of louse

Answer 30

Sucking louse known as tail louse

Question 31

Bovine lice: Haematopinus quadripertusus: physical features

Answer 31

dark with obvious sternal plaques, 4-5mm long, legs of equal length, with robust hooks

Question 32

Bovine lice: Haematopinus quadripertusus: life cycle

Answer 32

20-30 days

Question 33

Bovine lice: Haematopinus quadripertusus: where does it localise

Answer 33

head and bases of horns and tails