Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What physical characteristic distinguishes fleas from lice
|
They are laterally flattened
|
|
|
|
What sort of metamorphosis do fleas undergo
|
Complex metamorphosis (eggs - larvae - pupae- adult)
|
|
|
|
What do the adult and larvae feed on
|
Adults - blood
Larvae - detritus (including flea feces) |
|
|
|
Are fleas host specific
|
Generally not
|
|
|
|
What hosts are Ctenocephalides canis/felis normally found on
|
Dogs/cats (will bite other mammals and humans)
|
|
|
|
What is the flea lifecycle for Ctenocephalides canis/felis
|
Eggs laid, drop off host, live in environment, attach to new host - maggots hatch - several molts - pupate - respond to movement/CO2, waiting for host
(14-28 days max) |
|
|
|
Side 2: What is the pathology caused by flea infestation of Ctenocephalides canis/felis
Side 3: What diseases/parasites can be transferred |
Blood loss anemia, wound production, flea bite dermatitis
|
Dipylidium caninum (cysticercoid), Dipetalonema
|
|
|
What is the normal host for Pulex irritans
|
Human
|
|
|
|
Side 2: What is the normal host for Xenopsylla cheopsis
Side 3: What disease can be transferred, how |
Rodents
|
Bubonic plague (Yersinia pestis)
Flea infected, bacteria grow in midgut, form bolus of bacteria - flea tries to feed, regurgitates |
|
|
What is the normal host of Echidonophaga gallinacean (Sticktight flea)
|
Birds, dog, man
|
|
|
|
How are infestations of Ctenocephalides canis diagnosed
|
See fleas, flea dirt, effects of bites
|
|
|
|
Side 2: What temp range is appropriate for fleas
Side 3: What humidity level is appropriate |
13-32 C (>35 C lethal to larvae and pupae over time)
|
50-92%
|
|
|
Side 2: How long can unfed adult Ctenocephalides canis/felis survive
Side 3: How long can adult fed fleas survive |
~2mo
|
1 year
|
|
|
What level of infestation is required before fleas will leave a host
|
>200 fleas on an individual animal
|
|
|
|
How many of the fleas residing on an animal tend to be adult
|
10-15
|
|
