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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
What physical characteristic distinguishes fleas from lice
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They are laterally flattened
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What sort of metamorphosis do fleas undergo
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Complex metamorphosis (eggs - larvae - pupae- adult)
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What do the adult and larvae feed on
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Adults - blood
Larvae - detritus (including flea feces) |
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Are fleas host specific
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Generally not
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What hosts are Ctenocephalides canis/felis normally found on
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Dogs/cats (will bite other mammals and humans)
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What is the flea lifecycle for Ctenocephalides canis/felis
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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) |
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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
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Dipylidium caninum (cysticercoid), Dipetalonema
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What is the normal host for Pulex irritans
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Human
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Side 2: What is the normal host for Xenopsylla cheopsis
Side 3: What disease can be transferred, how |
Rodents
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Bubonic plague (Yersinia pestis)
Flea infected, bacteria grow in midgut, form bolus of bacteria - flea tries to feed, regurgitates |
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What is the normal host of Echidonophaga gallinacean (Sticktight flea)
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Birds, dog, man
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How are infestations of Ctenocephalides canis diagnosed
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See fleas, flea dirt, effects of bites
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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)
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50-92%
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Side 2: How long can unfed adult Ctenocephalides canis/felis survive
Side 3: How long can adult fed fleas survive |
~2mo
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1 year
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What level of infestation is required before fleas will leave a host
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>200 fleas on an individual animal
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How many of the fleas residing on an animal tend to be adult
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10-15
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