Bovine- Hypoderma, Damalinia, Linognathus and Haematopinus Flashcards
(38 cards)
What are Family Oestridae Adults?
large hairy flies
nonfunctional mouthparts
short-lived
What are Family Oestridae Larvae?
obligatory parasites
host specific
What are Hypoderma bovis, Hypoderma lineatum Common name adults?
warble fly, heel fly, ox warble
What are Hypoderma bovis, Hypoderma lineatum Common names larvae?
cattle grub
What are Hypoderma bovis, Hypoderma lineatum Host(s)?
cattle
What are Hypoderma bovis, Hypoderma lineatum Identification?
typical oestrid
What are Hypoderma bovis, Hypoderma lineatum Life cycle?
H. lineatum laid in lines of 6 or more on lower limb
H. bovis eggs laid singly
H. lineatum active beginning of summer
H. bovis active later
H. lineatum accumulate in submucosa of esophagus
H. bovis accumulate in epidural fat of spinal cord
What are Hypoderma bovis, Hypoderma lineatum Site(s) of infection?
3rd stage larvae found in lumps (warbles) on backs of cattle in spring
What are Hypoderma bovis, Hypoderma lineatum Pathogenesis and lesions?
3rd stage larvae under skin cause damage and downgrade carcass; economic loss
H. lineatum death ->bloat
H. bovis toxins -> paraplegia
What are Hypoderma bovis, Hypoderma lineatum Clinical signs?
faulty regurgitation, bloat
paraplegia
What are Hypoderma bovis, Hypoderma lineatum Diagnosis?
identification of parasite
What are Hypoderma bovis, Hypoderma lineatum Treatment and prevention?
MCLs kill early stages
timing
What are Suborder Ischnocera (Mallophaga) (characteristics)?
Biting, chewing lice
Wide mandible mouthparts
Feed on skin, hair, feathers, other organic material
3 mm, yellow
Rapid movement to move over skin and covering
Often bird lice
What is Damalinia bovis Common name?
cattle biting louse
What is Damalinia bovis Hosts?
cattle
What is Damalinia bovis Identification?
typical ischnoceran
reddish brown color
What is Damalinia bovis Site of infection?
head, poll, neck, shoulders, rump, tail switch
What is Damalinia bovis Life cycle: Winter?
Winter favors proliferation
thick coat
cattle housed
parthenogenesis
What is Damalinia bovis Life cycle: In summer?
In summer lice numbers are low
thin pelage limits sheltered habitat
skin surface temperatures high
sunlight is lethal
What is Damalinia bovis Pathogenesis, lesions, clinical signs?
chronic dermatitis
in large numbers intensive irritation and pruritus
sign of malnutrition or chronic disease
What is Damalinia bovis Diagnosis?
identification of louse
What is Damalinia bovis Treatment and prevention?
various ectoparasiticides
MCLs
What are Suborder Anoplura (characteristics)?
Bloodsucking lice, more pathogenic Pointed “noses” Large, 3-5 mm Dark blue, depending on amount blood ingested Slow moving Clasping hair shaft Lice of mammals
What is Linognathus vituli Common name?
long nosed cattle louse
