Family Oestridae Flashcards
1
Q
identification of adults
A
large hairy flies
nonfunctional mouthparts
short- lived
2
Q
larvae are ____ parasites
A
obligate
3
Q
larvae are ____ specific
A
host
4
Q
species
A
Hypoderma bovis
Hypoderma lineatum
5
Q
common name of adult
A
warble flies, heel fly
6
Q
common name of larvae
A
cattle grub
7
Q
hosts
A
cattle
8
Q
life cycle of H. bovis
A
adult flies lay eggs on legs of cattle instar hatches and burrows through skin accumulate in fat of spinal cord migrate to tissue of back cut breathing holes molt third instar stays in back for 2months when developed, larvae fall out of breathing holes onto ground larvae pupate adult flies emerge from pupal case male and females mate
9
Q
____ is active for the first 2 months of summer and ____ is active to the remainder of the summer
A
H. lineatum, H. bovis
10
Q
life cycle of H. lineatum
A
adult flies lay eggs on legs of cattle instar hatches and burrows through skin accumulate in esophagus migrate to tissue of back cut breathing holes molt third instar stays in back for 2months when developed, larvae fall out of breathing holes onto ground larvae pupate adult flies emerge from pupal case male and females mate
11
Q
H lineatum is laid in lines of ____ or more
A
6
12
Q
H bovis lay eggs ___
A
singly
13
Q
site of infection
A
third stage larvae in lumps on back of cattle
14
Q
pathogenesis of H lineatum
A
death, bloat
15
Q
pathogenesis of H. bovis
A
toxins, paraplegia
16
Q
clinical signs
A
faulty regurgitation
bloat
paraplegia
17
Q
treatment
A
MCLs
