Fleas and Lice

Question 1

What type of metamorphosis do fleas undergo?

Answer 1

Holometabolous

• complete metamorphosis
• Egg - larva - pupa - adult

Question 2

Dipylidium caninum

Answer 2

Canine tapeworm. Fleas are intermediate hosts for this

Question 3

Life cycle of a flea

Answer 3

Egg ->molts twice as a larvae (susceptible to desiccation), pupate (becomes a pupa in the cacoon), Pre-emerged adults remain withint he cacoon waiting for a food source.
- Blood meal

Question 4

The cat flea

Answer 4

ctenocephalides felis felis

Question 5

Where are most newly acquired infections from an infected environment (fleas)

Answer 5

infected invironment more often than an infected host.

Question 6

What is the reaction an animal can have to Ctenocephalides felis felis

Answer 6

flea bite dermatitis - a hypersensitivity reaction to the antigens in the flea saliva

Question 7

Treatment for Ctenocephalides felis felis

Answer 7

Isoxazolines- GABA gated and glutamate gated chloride channel antagonist.
Insect growth regulators.
Borates- kills only feeding immature stages (larval stages)

Question 8

The dog flea

Answer 8

Ctenocephalides canis

Question 9

stick-tight flea

Answer 9

Echidnophaga gallinacea

Question 10

what species is the Echidnophaga gallinacea important for

Answer 10

Domestic poultry- aggregate on the bare areas of the had, comb or wattles. Larvae end up in chicken manure and feed

Question 11

Jigger

Answer 11

Tunga penetrans

-eggs are retained in the abdomen and the flea swells to the size of a pea

Question 12

Oriental rat flea

Answer 12

Xenophysalla cheopis

- Capeable of transmitting Yersinia pestis

Question 13

Ground squirrel flea

Answer 13

Oropsylla monatna

- capeable of transmitting Yersinia pestis

Question 14

Chewing/biting lice

Answer 14

Mallophaga

- has mandibulate mouthparts for chewing

Question 15

Sucking lice

Answer 15

Anoplura

- have piercign mouthparts

Question 16

What are nits?

Answer 16

nits are eggs that are securely cemented to the shaft of hairs or feathers of the host

Question 17

Do lice have complete or incomplete metamorphosis?

Answer 17

incomplete metamorphosis
they are hemimetabolous
egg- larva- nymph- adult

Question 18

Chicken body louse (mellophaga class)

Answer 18

Menacanthus stramineus

Question 19

Cat louse

Answer 19

Felicola subrostratus

Question 20

Lice of domestic dogs

Answer 20

Trichodectes canis

Question 21

Lice that infects herbivores and different species for different hosts (Mallophaga)

Answer 21

Damalinia sp.

Question 22

Sucking lice of swine

Answer 22

Haematopinus suis

Question 23

Long nosed cattle louse

Answer 23

Linognathus vituli

Question 24

Treatment and control of lice

Answer 24

Pyrethrins work well for sucking lice
Pour on formulations better for chewing lice
- Must treat 2x to kill the next generation.