Chapter 4 page 3

Question 1

Genus Knemidocoptes:

Answer 1

can be spelled Cnemidocoptes.

Several species that important pests of domestic and wild birds. Knemidocoptes gallinae.

Question 2

Feathers break easily and are pulled out by the affected bird resulting

Answer 2

in bare patches on the back and wings. ( head & neck may be affected)

Question 3

Knemidocoptes mutans causes a condition known as

Answer 3

‘scaly leg’ in domestic hens, turkeys birds.

Question 4

Stratum corneum becomes

Answer 4

hyperkeratotic ( thickened excess keratin) it is not unusual for the lesions (cut) to become secondarily invaded by opportunistic bacteria and fungi.

Question 5

The affected limb becomes deformed, digits(fingers) can become

Answer 5

necrotic and fall off and the bird is rendered lame. Bird will cease feeding and die, and may affect the comb and neck.

Question 6

Family Psoroptidae:

Answer 6

(many genera’s) important in veterinary medicine.

Question 7

Ex. Psoroptes ovis

Answer 7

sheep scab

Question 8

Genus Chorioptes

Answer 8

causes chorioptic mange

Question 9

Genus Otodectes that causes

Answer 9

Otodectes cynotis: ear mites (affecting the ears of cats, dogs, carnivores)

Question 10

Suborder Ixodidae

Answer 10

contains all ticks (parasites)
 three families within the suborder. 
-Family Argasidae (soft ticks)
-Family Ixodidae (hard ticks)
- Nuttalliellidae contains a South African disease Nuttalliellidae numaqua.

Question 11

Ticks are bigger than

Answer 11

mites and can be seen with the naked eye.

Question 12

The mouthparts of ticks include a large-toothed surface called __________ hat the tick uses to firmly anchor itself to its host.

Answer 12

hypostome

Question 13

Ticks have sensory structures called

Answer 13

Haller’s organ on a proximal capsule.

Question 14

Haller’s organs: consists of

Answer 14

anterior pit

proximal capsule

Question 15

Hypostome are found in mites

Answer 15

not toothed and small

Question 16

Family Argasidae:

Answer 16

found as ‘soft ticks’ b/c of their leathery appearance and lack of hard scutum (protective shield) on their upper surface.

Question 17

Argasidae (3 extra facts)

Answer 17

• Shape of genitalia are different
• 170 different species
• Usually these parasites are for birds

Question 18

Argasid life cycle:

Answer 18

comprises of egg, larval, and 2 to 7 nymphal stages before the ticks become adults.

Question 19

Nymphs and adults feed quickly

Answer 19

(30 minutes to a few hours) and then drop off their host.

Question 20

Larvae will remain attached for

Answer 20

several days

Question 21

After dropping off, the larvae and nymphs

Answer 21

usually moult to the next developmental stage.

Question 22

While the adults produce another

Answer 22

batch of sperms and eggs

Question 23

Having many hosts makes ticks potential vectors

Answer 23

of many diseases.