Prevention of Flies and Mosquitoes Flashcards
1
Q
house fly characteristics
A
- most widely distributed insect of importance to mankind
2
Q
house fly biology eggs
A
- deposited in decaying vegetable, animal matter, garbage, animal/human fecal material, contaminated soil
- lays 20 batches of eggs every 3-4 days
- hatch in 8-12hrs under favorable conditions
3
Q
house fly larvae (maggots)
A
- creamy white 13mm (0.5) in length
- develop 3-24 days (depending on conditions)
- burrow into soil – developing brown pupal case
4
Q
house fly pupa
A
- usually lasts 4-5 days; adult emerges
5
Q
house fly adult
A
- gray in color
- gray thorax
- has 4 equally broad, dark longitudinal stripes
- has non-biting, sponging mouth parts
- body hairs
6
Q
disease importance
A
- vomit on food, then lap it up
- good mechanical vector
- habitually walks on organic filth
- can carry many disease organisms/cause myiasis
7
Q
blow fly characteristics
A
- also known as blue-bottle/green-bottle flies
- identified by their large metallic shining blue/green abdomens
8
Q
blow fly disease importance
A
- although rarely a public health concern, their larvae ( surgical maggots) may cause myiasis
9
Q
sand fly biological characteristics
A
- eggs laid where there is abundance of organic matter
- adults
- ) small, moth-like (5mm or 1/25”)
- ) bodies/wings densely covered w/t hair
- ) only females have piercing mouthparts for sucking blood
- ) invade dwellings to bite man, evenings and night
10
Q
sand fly disease importance
A
- disease flies transmit to man are
- bacterial (bartonella)
- viral (sand fly or pappataci fever)
- protozoal (leishmaniasis)
11
Q
TSE TSE Fly characteristics
A
- easily identified by way they fold their wings when resting
(scissor-like fashion above the abdomen) - has characteristic discal cell (cleaver shaped) in wing
- prominent biting mouthparts
- these flies restricted to African continent south of Sahara Desert
- both sexes are blood suckers
12
Q
TSE TSE Fly disease importance
A
- capable of transmitting trypanosomiasis
13
Q
black fly characteristics
A
- small in length (1-5mm)
- dark in color
- stout body with short, broad wings
- female species may feed on man as well as domestic, wild animals, leaving a large size bite wound
14
Q
black fly disease transmission
A
- capable of vactoring onchocerciasis river blindness
15
Q
horse/deer fly characteristics
A
- robust insects w/t powerful wings
- their size can range from that of house fly to nearly 25 mm (1”) in length
- inflict exceedingly painful bites
16
Q
horse/deer fly disease transmission
A
- known to vector
- bacterial (anthrax, tularemia)
- protozoan (trypanosomes)
- helminthic (loa loa) infections. loiasis/African eye worm
17
Q
eye gnats characteristics
A
- very small flies, given their name for their predilection for eye secretions
- they are also attracted to wounds, pus, sebaceous secretions
- annoying to man bc of their persistent habit of swarming closely about the face
- they are able to abrade wound edges, conjunctival epithelium w/t their mouthparts equipped w/t upturned spines designed as effective cutting instruments
