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Flashcards in Family Oestridae Deck (17):
1

identification of adults

large hairy flies
nonfunctional mouthparts
short- lived

2

larvae are ____ parasites

obligate

3

larvae are ____ specific

host

4

species

Hypoderma bovis
Hypoderma lineatum

5

common name of adult

warble flies, heel fly

6

common name of larvae

cattle grub

7

hosts

cattle

8

life cycle of H. bovis

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

____ is active for the first 2 months of summer and ____ is active to the remainder of the summer

H. lineatum, H. bovis

10

life cycle of H. lineatum

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

H lineatum is laid in lines of ____ or more

6

12

H bovis lay eggs ___

singly

13

site of infection

third stage larvae in lumps on back of cattle

14

pathogenesis of H lineatum

death, bloat

15

pathogenesis of H. bovis

toxins, paraplegia

16

clinical signs

faulty regurgitation
bloat
paraplegia

17

treatment

MCLs