20. fleas

Question 1

fleas are laterally or horizontally compressed?

Answer 1

laterally

small wingless, blood feeding insects

Question 2

Answer 2

flea

Question 3

what type of flea drinks blood

Answer 3

male and female adults

Question 4

are fleas host specific?

Answer 4

no, jump from host to host

Question 5

flea larva eat

Answer 5

adult poop that contains blood

Question 6

fleas have how many legs

Answer 6

6, last pair used to jump

Question 7

combs on fleas are also called

Answer 7

ctenidae

Question 8

lifecycle of flea

Answer 8

Question 9

what type of flea penetrates skin

Answer 9

tunga

Question 10

— are fleas with long term attachment

Answer 10

echidnophaga (stick tight fleas)

Question 11

dog and cat

Answer 11

Ctenocephalides

have eyes
pronotal and genal combs
rounded head
infect dogs and cats

transmit Dipylidium caninum, Rickettsia typhi (murine thyphus) and
Bartonella henselae (cat scratch disease)

bites cause itchiness and dermatitis

Question 12

Ctenocephalides infect

Answer 12

dogs and cats

Question 13

what do ctenocephalides look like

Answer 13

has eyes
pronotal and genal combs
rounded head

Question 14

Ctenocephalides transmit

Answer 14

Transmit Dipylidium caninum, Rickettsia typhi (murine thyphus) and
Bartonella henselae (cat scratch disease)

Question 15

rat

Answer 15

Xenopsylla cheopis

oriental rat flea
has eyes, no comb, rounded head

transmit plaque and murine thyphus

Question 16

oriental rat flea transmit

Answer 16

plague and murine thyphus

XENOPSYLLA CHEOPIS
no comb, has eyes, rounded head

Question 17

human flea is called

Answer 17

Pulex irritans

no comb, smooth head, has eyes

Question 18

pulex irritans infect

Answer 18

humans, dogs, cats, rats, badgers, pigs

transmit Yersinia pestis (plague)

no comb, smooth head, has eyes

Question 19

Pulex irritans transmit

Answer 19

transmit Yersinia pestis (plague)

no comb, smooth head, has eyes

human flea

Question 20

spilopsyllus cuniculi look

Answer 20

have eyes and both combs

live in ears of hosts- cats, dogs, rabbits

rabbit flea

Question 21

the rabbit flea is

Answer 21

Spilopsyllus cuniculi

eyes, both comb

live in ears of host

Question 22

Spilopsyllus cuniculi infect

Answer 22

dogs and cats that hunt rabbits

rabbit flea- live in ears of host

eyes and both combs

Question 23

Spilopsyllus cuniculi transmit

Answer 23

Myxomatosis virus

Question 24

Answer 24

ECHIDNOPHAGA GALLINACEA
stick- tight flea of birds

no combs, + eyes, head truncated

Question 25

Echidnophaga gallinacae infect

Answer 25

bare areas of the head, comb and wattles of poultry, can also infect cats and dogs no combs, + eyes, head truncated

Question 26

lifecycle of Echidnophaga gallinacea

Answer 26

females burrow into the skin and remain there for 2-6 weeks stick- tight flea of birds no combs, + eye, head truncated

Question 27

signs of echidnophaga gallinacae infestation

Answer 27

ulceration and 2 o bacterial infection, anemia, reduced growth and poor egg production Birds will be restless and often scratch the affected areas stick- tight flea of birds no combs, + eye, head truncated

Question 28

jigger/chigger/chigoe flea are

Answer 28

tunga penetrans infect humans and pigs no comb, head truncated

Question 29

life cycle of tunga penetrans

Answer 29

Mating occurs on the skin surface After fertilization, females burrow into the skin to form a pocket Once the females get engorged, they cause serious pain, inflammation, itching and ulceration no combs, head truncated

Question 30

tunga penetrans infect

Answer 30

humans and pigs mating on skin surface, then females burrow into the skin to form a pocket

Question 31

how to diagnose flea infestation

Answer 31

clinical signs, itchiness, flea dirt- blood Check the animal body for the insect Check the animal housing, beddings, rugs etc for adults, larvae or eggs

Question 32

control of fleas

Answer 32

Treat and prevent infestation on the host Break the life cycle in the environment Control the immune response to the flea alergens

Question 33

are small, dark brown, wingless and obligate blood-feeding insects

Answer 33

fleas

Question 34

comb by mouth is called

Answer 34

genal comb

Question 35

comb at back of head is called

Answer 35

pronotal comb

Question 36

fleas cause

Answer 36

flea bite/allergic dermatitis. This is a cutaneous hypersensitivity reaction to the salivary secretions of fleas during blood feeding characterized by severe itching and painful skin wounds which can be complicated by secondary bacterial infections

Question 37

life cycle of flea

Answer 37

complete- holometabolous occurs mostly off host in environment

Question 38

Fleas have preferred hosts but in general are ---

Answer 38

not strictly host specific.

Question 39

Some species (eg. ---, the "sticktight flea") are firmly, often permenently attached to the exterior of the host integument.

Answer 39

Echidnophaga gallinacia

Question 40

---, the chigoe flea)actually penetrate the outer layers of the host integument and develop within an intracutaneous pocket.

Answer 40

Tunga penetrans

Question 41

C. felis and C. canis may act as intermediate hosts of ---

Answer 41

Dipylidium caninum. (dog double pored tapeworm)

Question 42

Rodent fleas, Xenopsylla cheopis, and C. felis serve to transmit the causative agent --- between reservoir hosts (rats, opossums) and to humans.

Answer 42

Rickettsia typhi

Question 43

--- Block development of immatures fleas

Answer 43

Growth reglators ("GR's", Third Generation insecticides)

Question 44

Inert microcrystalline materials; abrade waxy layer of larval cuticle. Cause dessication.

Answer 44

Abrasive aerogels

Question 45

Systemic chitin synthase inhibitor administered to host. When ingested by flea during bloodfeeding, prevents formation of cuticular structures in developing embryo and any hatched larvae

Answer 45

Metabolic inhibitor