Preventive of Fleas, Ticks, Mites, Bedbugs Flashcards
1
Q
fleas characteristics
A
- ectoparasites of birds, animals
- chigoe flea exception, burrowing into host, particularly btween toes, under nails, tender part feet
- small, laterally compressed, hard-bodied, lack wings, equipped w/t legs adapted jumping
- feed frequent intervals, once day
2
Q
fleas disease importance
A
- oriental rat flea
- chief vector bubonic plague , flea borne typhus
- introduced all sec world (norway, roof rat)
- abundantly found south, southern cali
- predominantly found summer, fall, scarce in winter
3
Q
control methods fleas general protective measures
A
- avoid infested areas when possible
- wear protective clothing
- personal application repellant effective short periods
4
Q
fleas treatment breeding areas
A
- infested bldg, apply residual spray as emulsions/suspensions on floor, rugs, on wall surfaces height 2feet above floor
- infested areas, yards, under bldgs, treated residual emulsions
- prevent entries, spray foundation height 2-3 feet
- when diseases present, rat burrows dusted insecticide prior conducting rodent control measures
5
Q
hard ticks characteristics
A
- id by hard covering (scutum)
- attaches host durring feed, remains engorgement completed
- larvae, nymph one blood meal each
- adult fem single blood meal dropping off host to digest blood, lays single Lg batch eggs
- either 2/3 hosts during developing
6
Q
hard ticks disease importance
A
- lyme disease
- rocky mountain spotted fever (tick typhus)
- tick-borne rickettsioses eastern hemisphere
7
Q
soft ticks characteristics
A
- lack scutum
- hides, cracks, crevices houses/nests of hosts/out at night to feed
- larva/nymph feed several times before molting
- adult fem feed number times, laying small batch eggs each feed
8
Q
soft ticks disease importance
A
- relapsing fever, bacterial infection causes recurrent fever w/t headache, muscle, joint aches, nausea
9
Q
control methods for ticks
A
- avoid infested areas
- wear protective clothing
- apply insect repellent
- remove ticks on body at once
- clear vegetation from infested areas
- apply insecticides early in yr
10
Q
mites characteristics
A
- scabies/itch mites transmitted by
- close body contact
- overcrowded areas
- burrows into layer of dermis
- intense itching, occasionally erythema
11
Q
food infesting mites
A
- dry foods bread, cheese, cereals, smoked meats
- medical importance
- dermatitis experienced by workers handling infested food
- resp comp when inhaled
- urin tract infestations cause irritation and/or urethral stricture
- gastro disturbances
12
Q
nest inhibiting mites
A
- live nests of birds, rodents only bite man when deprived normal hosts
- house mouse mite vectoring rickettsialpox from mouse to man
13
Q
3 stages of mite maturation
A
- larva
- nymph
- adult
14
Q
characteristics of mite larva
A
- six legs
- species transmits scrub typhus
- parasitic on rodents
- incidentally, parasitic to man
- quite small, red/pink
- feed lymph, serous fluids
- found in damp areas covered w/t vegetation
15
Q
nymph, adult stages of mites
A
- eight legs
- fee living
- feed on eggs of small insects, eggs related invertebrates
