Final Exam: Confinement Flies

Question 1

2 types of confinement flies

Answer 1

stable and house

Question 2

stable fly breeding sites

Answer 2

moist decaying organic mater w/ rotting vegetation - not plain manure; bedding mixed with urine/manure; fermenting feed, silage, rotting hay

Question 3

development of stable flies

Answer 3

directly related to temp - pupal stage under breeding matter; emerge in spring as adults

Question 4

stable fly feeding sites

Answer 4

lower legs, ear tips in dogs

Question 5

type of feed in male and female stable flies

Answer 5

blood feeders - 2-5 min to engorge; easily disturbed; several bites for 1 feeding; 3 complete feedings/egg batch; painful bites

Question 6

stable fly attractants

Answer 6

visual stimulus - select conspicuous target
CO2 - imprecise upwind flight
human skin odor - precisely directed flight

Question 7

when to stable flies feed and where do they rest

Answer 7

feed on sunny days; rest in shade on fence posts, buildings, most of time off animal

Question 8

pain index of stable fly

Answer 8

206 (very high)

Question 9

stable fly treatment guidelines

Answer 9

only treat when pop is high enough
50/beef cow = reduced weight gain by 25%
50/ dairy cow = 40-60% decrease in milk production

Question 10

cultural management

Answer 10

sanitation; waste management; quick drying, drainage, mounded manure on hard pad

Question 11

stable fly insecticides

Answer 11

space spray- contact and kill adults when out and active

residual - on animal and resting sites; should be fairly long lasting

Question 12

control measures - attractants

Answer 12

reflected light attractant; traps have sticky substance that flies get stuck too; corrugated plastic (white best)

Question 13

house fly impact

Answer 13

nuisance; pathogens - viruses, bacteria, fungi, protozoa, nematodes on mouthparts , feet, vomit, feces

Question 14

house fly development

Answer 14

little manure needed for development

mature larvae can move > 50’ to dry place to pupate

Question 15

where do house flies develop?

Answer 15

favorites: horse manure>human feces > cow manure

Question 16

house fly food

Answer 16

adults can survive on water and carbs but females need protein to develop eggs
have similar mouthparts to the face fly

Question 17

what about house flies make them great disease carriers?

Answer 17

they have a lot of bristles all over and on feet so it can pick up a lot of things and carry it on its body

Question 18

house fly behavior - where do they rest

Answer 18

ceilings, beams, wires in buildings

Question 19

house fly management

Answer 19

removal of attractive materials may reduce fly numbers by 50%

Question 20

house fly traps

Answer 20

scudder grid - count flies resting on known surface area
spot cards- measures activity over a few weeks rather than a few minutes
sticky ribbons